Telecentric System Patents (Class 359/663)
  • Patent number: 10281824
    Abstract: Microlithography projection objectives for imaging into an image plane a pattern arranged in an object plane are described with respect to suppressing false light in such projection objectives.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 7, 2019
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Heiko Feldmann, Daniel Kraehmer, Jean-Claude Perrin, Julian Kaller, Aurelian Dodoc, Vladimir Kamenov, Olaf Conradi, Toralf Gruner, Thomas Okon, Alexander Epple
  • Patent number: 10254522
    Abstract: An ultra-short throw projector device includes a lens system. The lens system includes a first lens group configured to form a first intermediate image from an incident display image; a second lens group configured to form a second intermediate image from the first intermediate image; an aperture configured to be disposed on a point where the first intermediate image is formed between the first lens group and the second lens group; a reflection mirror configured to reflect and magnify the second intermediate image and form an image on a screen; and a light path changing prism configured to change a light path in the vertical direction or other directions, the prism being disposed at a point on the light path of the lens system, at least one of an incident surface and a refracting surface being an aspherical surface or a freeform surface.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: April 9, 2019
    Assignee: PRAZEN CO., LTD.
    Inventor: Heekyung Kim
  • Patent number: 10215971
    Abstract: A far infrared detector and objective lens and lens set thereof. The far infrared imaging lens set (10) comprises a first lens (100) and a second lens (200) arranged in sequence along a principal axis; the first lens (100) has a first curved surface (102) having a radius of curvature of 2.4×(1±5%) mm and a second curved surface (104) having a radius of curvature of 2×(1±5%) mm; the second lens (200) has a third curved surface (202) having a radius of curvature of 50×(1±5%) mm and a fourth curved surface (204) having a radius of curvature of 60×(1±5%) mm; wherein the first curved surface (102), the second curved surface (104), the third curved surface (202), and the fourth curved surface (204) are arranged in sequence; the first curved surface (102), the second curved surface (104) and the third curved surface (202) are all convex to the object side, and the fourth curved surface is convex to the image side. Distant targets can be detected in dark and foggy environments, and imaging capability is high.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 26, 2019
    Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.
    Inventors: Jiaying Li, Chaoming Zhou, Bo Sun, Yunfeng Gao
  • Patent number: 10197777
    Abstract: An optical lens comprising a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), and a fifth lens (L5) that are sequentially arranged on a common optical axis in the transmission direction of an incident light. Both the first lens (L1) and the fifth lens (L5) are negative meniscus lenses. Both the second lens (L2) and the third lens (L3) are positive meniscus lenses. The fourth lens (L4) is a biconvex lens. The optical lens is applicable in an optical system of a laser processing apparatus. When an employed processing wavelength is different from a monitoring wavelength, imaging color differences in a monitoring system can thus be eliminated, specifically, when a wavelength in the infrared range is employed as a laser processing wavelength while a red wavelength serves as the monitoring wavelength, improved imaging effects are provided in the monitoring system, thus ensuring the quality of laser processing.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 5, 2019
    Assignee: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD.
    Inventors: Jiaying Li, Chaoming Zhou, Bo Sun, Yuqing Chen, Yunfeng Gao
  • Patent number: 10133185
    Abstract: Provided is an illumination optical apparatus for illuminating a mask with light from a light source. The apparatus includes an optical integrator configured to cause a light intensity distribution to be uniform in an emission end surface by reflecting the light incident from an incident end surface in an inner surface a plurality of times, an image forming optical system configured to form an image of the emission end surface of the optical integrator on the mask, and an adjustment unit configured to adjust telecentricity of the light so that a principal ray incident on the mask and a normal line of the mask approach parallelism and configured to be disposed outside the image forming optical system.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: November 20, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masaki Mizutani
  • Patent number: 10120164
    Abstract: Provided is an imaging lens assembly, including a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side of the imaging lens assembly to an image side of the imaging lens assembly in turn. The first lens is of a positive focal power, an object side surface of the first lens is convex; the second lens is of a negative focal power, an image side surface of the second lens is concave; the third lens is of a focal power; the fourth lens is of a focal power; and the fifth lens is of a negative focal power; and a combined focal power of the third lens and the fourth lens is negative. The imaging lens assembly meets the following formulas: 2.0<f/ImgH<3.0; and 0<f1/f<0.5.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 6, 2018
    Assignee: ZHEJIANG SUNNY OPTICS CO., LTD.
    Inventors: Fujian Dai, Lin Huang
  • Patent number: 9964741
    Abstract: Systems and methods for imaging a target are provided. A system includes a detector and a substantially bitelecentric lens assembly positioned between the detector and the target. A first optical assembly is configured to focus light received from the substantially bitelecentric lens assembly onto the detector. The substantially bitelecentric lens assembly and the first optical assembly are configured to produce a collimated light space between the substantially bitelecentric lens assembly and the first optical assembly. A second optical assembly is positioned within the collimated light space.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 8, 2018
    Assignee: Vanderbilt University
    Inventor: Charles David Weaver
  • Patent number: 9946082
    Abstract: A handheld, low-level laser apparatus includes a laser diode configured to generate a laser emission having an astigmatism. The apparatus further includes one or more corrective lens configured alone or in combination to correct the astigmatism and to collimate the laser emission, a divergence lens configured to diverge the laser emission after the laser emission passes through the one or more corrective lens, and a front lens configured to collimate the laser emission after the laser emission passes through the divergence lens. A low-level laser beam producing method includes repeatedly directing an IR laser emission through a series of lenses during a first set of time periods and repeatedly directing a visible laser emission through the series of lenses during a second set of time periods, each time period of the first set of time periods being distinct from each time period of the second set of time periods.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 17, 2018
    Assignee: Medical Coherence LLC
    Inventor: Yonatan Gerlitz
  • Patent number: 9912849
    Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens may comprise an aperture stop and five lens elements positioned sequentially from an object side to an image side. By controlling the convex or concave shape of the surfaces of the lens elements and designing parameters satisfying at least one inequality, the optical imaging lens may exhibit better optical characteristics and the total length of the optical imaging lens may be shortened.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 6, 2018
    Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.
    Inventors: Jia-Sin Jhang, Yong Qu, Mao Zong Lin
  • Patent number: 9844427
    Abstract: An apparatus is described for determining surface topography of a three-dimensional structure. The apparatus can include a probe and an illumination unit configured to output a plurality of light beams. In many embodiments, the apparatus includes a light focusing assembly. The light focusing assembly can receive and focus each of a plurality of light beams to a respective external focal point. The light focusing assembly can be configured to overlap the plurality of light beams within a focus changing assembly in order to move the external focal points along a direction of propagation of the light beams. The apparatus can include a detector having an array of sensing elements configured to measure a characteristic of each of a plurality of light beams returning from the illuminated spots and a processor coupled to the detector and configured to generate data representative of topography of the structure based on the measured characteristic.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: December 19, 2017
    Assignee: Align Technology, Inc.
    Inventors: Yossef Atiya, Tal Verker
  • Patent number: 9835833
    Abstract: A wide angle lens is constituted by, in order from the object side to the image side: a front group having a negative refractive power; an aperture stop; and a rear group having a positive refractive power. The front group includes, in order from the object side to the image side, a first meniscus lens having a negative refractive power, and a second meniscus lens having a negative refractive power. The rear group includes a first cemented lens formed by cementing a negative lens and a positive lens, provided in this order from the object side, together, most toward the image side, and a lens having at least one aspherical surface and a negative refractive power provided adjacent to the first cemented lens at the object side thereof.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 5, 2017
    Assignee: FUJIFILM Corporation
    Inventor: Taiga Noda
  • Patent number: 9819917
    Abstract: A relay optical system exhibits an action of deflecting light with respect to passing luminous flux as a result of being provided with a light deflection member, and thus a cross-section of the luminous flux can be adjusted to a state of having an appropriate size (enlarged size), that is, a state in which an image is not completely formed but is blurred, at image formation positions of color modulation light valves. Therefore, it is possible to form a favorable image by minimizing moire.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: November 14, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Makoto Otani
  • Patent number: 9810877
    Abstract: An imaging lens system includes: in order from an object side, a first lens including a negative meniscus lens having a convex surface facing the object side, a second lens including a positive lens having a convex surface facing the object side, a third lens including a negative lens having a concave surface facing an image side, a fourth lens including a positive lens having a convex surface facing the object side, and a fifth lens including a meniscus lens having a concave surface facing the image side, in which: the imaging lens system further includes an aperture stop arranged on the object side or the image side of the second lens, and the lens surface on the image side of the third lens and the lens surface on the object side of the fourth lens are bonded to each other.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: November 7, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Yutaka Makino, Takashi Sugiyama
  • Patent number: 9804380
    Abstract: There is provided an endoscope objective optical system having a thin diameter, a wide in-water angle of view, a small variation in the angle of view, and a short overall length of the optical system. The endoscope objective optical system includes in order from an object side, a front group GF having a negative refractive power, an aperture stop, and a rear group GR having a positive refractive power, wherein the front group includes a first negative lens L1 and a second negative lens L2, and the following conditional expressions (1), (2), (3?), and (4) are satisfied: 1<Iw/ft<1.8??(1), 4<Lt/Iw<9.5??(2), 1.49?Lsf/ft?2.30??(3?), and 0.38<?La/Lsf<0.6??(4).
    Type: Grant
    Filed: April 29, 2017
    Date of Patent: October 31, 2017
    Assignee: OLYMPUS CORPORATION
    Inventor: Tsutomu Igarashi
  • Patent number: 9791679
    Abstract: An imaging optical system includes a first lens unit (B1) having a negative refractive power configured not to move for zooming from a wide-angle end to a telephoto end, and a plurality of lens units (B2 to B7) configured to move so that a space between lens units adjacent to each other changes during the zooming, the first lens unit includes a first lens subunit (B1a) having a negative refractive power, a second lens subunit (B1b) having a negative refractive power, and a third lens subunit (B1c) having a positive refractive power, the first lens subunit (B1a) is configured not to move for focusing from an infinity to a close range, and the second lens subunit (B1b) and the third lens subunit (B1c) constitute a focus moving unit configured to move, during the focusing, while a space between the second and third lens subunits is narrowed.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: October 17, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Junya Ichimura
  • Patent number: 9684149
    Abstract: A coordinate measuring machine has a workpiece support for holding a measurement object and a measuring head which can be displaced relative to the workpiece support. The measuring head carries an optical sensor. An evaluation and control unit is configured to determine spatial coordinates on the measurement object depending on a position of the measuring head relative to the workpiece support and depending on sensor data from the optical sensor. The optical sensor includes a lens assembly and a camera. The lens assembly comprises at least four separate lens-element groups. Three of these separate lens-element groups can be displaced along the optical axis of the lens assembly. A first lens-element group is arranged fixed in the region of the light-entry opening of the lens assembly. The coordinate measuring machine with the above-described lens assembly allows individual variation of magnification, focusing and resolution.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: June 20, 2017
    Assignee: CARL ZEISS INDUSTRIELLE MESSTECHNIK GMBH
    Inventors: Johannes Winterot, Thomas Engel
  • Patent number: 9622652
    Abstract: An endoscope objective optical system comprises: a front group having a negative refractive power, a brightness diaphragm, and a back group having a positive refractive power in order from an object side, wherein the front group is composed of a first group, which is a first lens which is a single lens and a second group, which is a single lens or a cemented lens having a negative refractive power; 1<Iw/ft<1.8 0.6<Ia/Iw<0.95 |DL1/RL1a|<0.4 ?3<fL1/ft<?1 where Iw is a maximum image height in underwater observation, ft is a focal distance of an entire objective optical system in observation in the air, Ia is a maximum image height capable of transmitting a principal ray in the observation in the air, and DL1, RL1a, and fL1 are an outer diameter, a radius of curvature of an object side surface, and a focal distance, respectively of the first lens.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: April 18, 2017
    Assignee: Olympus Corporation
    Inventor: Tsutomu Igarashi
  • Patent number: 9568725
    Abstract: An object of the present invention is to reduce the diameter, to make focus adjustment easy, and to achieve bright, wide-angle, high-resolution image quality. Provided is an endoscope objective optical system including, in this order from the object side, a front group having negative refractive power, an aperture stop, and a positive rear group. The front group includes, in this order from the object side, a first lens, which is a single lens having negative refractive power, and a second lens, which is a single lens having positive refractive power. The rear group includes a third lens, which is a single lens having positive refractive power, a cemented lens formed of a fourth lens having positive refractive power and a fifth lens having negative refractive power, and a sixth lens having positive refractive power.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 14, 2017
    Assignee: OLYMPUS CORPORATION
    Inventor: Yasuaki Ushio
  • Patent number: 9470881
    Abstract: A zoom lens includes, in order from an object side to an image surface side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a negative refractive power, and a fourth lens group having a positive refractive power, the second lens group and the third lens group are moved such that the second lens group is located on a most object side at a wide-angle end and the third lens group is located on a most image surface side at a telephoto end during zooming.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: October 18, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kazuyasu Ohashi
  • Patent number: 9429740
    Abstract: The invention relates to a telecentric modular zoom system for mapping an object plane on a sensor, in particular in a digital transmitted light microscope or incident light microscope having interchangeable lenses, comprising a fixed tube lens unit (LG1) and multiple optical assemblies (LG2, LG3, LG4, LG5, LG6), at least two of which are adjustably arranged relative to one another for the purpose of changing the magnification, characterized in that [sic]. According to the invention, a physical aperture (BL) conjugated relative to the rear focal points of the objectives used and having a variable diameter may be arranged in the beam path, wherein the rear focal points of the objective may be mapped in the space between a sensor image (BIE) and the intermediate image (ZB), the images of the rear focal points of the objectives (aperture BL) and the sensor image (BIE) do not lie within or migrate through the optical assemblies (LG2, LG3, LG4, LG5, LG6, LG7).
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: August 30, 2016
    Assignee: CARL ZEISS MICROSCOPY GMBH
    Inventors: Johannes Winterot, Hans-Juergen Dobschal, David Shafer
  • Patent number: 9341820
    Abstract: The present disclosure provides an image capturing optical system comprising: a positive first lens element having a convex object-side surface; a negative second lens element having a concave object-side surface; a third lens element; a fourth lens element having a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface thereof being aspheric; a fifth lens element having a concave image-side surface concave, both of the object-side surface and the image-side surface being aspheric, at least one of the object-side surface and the image-side surface having at least one convex shape in an off-axis region thereof.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: May 17, 2016
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Kuan-Ming Chen, Wei-Yu Chen
  • Patent number: 9285564
    Abstract: A lens for projection substantially consists of a negative first lens with its concave surface facing a reduction side, a positive second lens with its concave surface facing the reduction side, a negative third lens with its concave surface facing a magnification side, a positive fourth lens with its convex surface facing the reduction side, a positive fifth lens and a positive sixth lens in this order from the magnification side. The reduction side is telecentric. The following conditional formulas (1) and (2) about refractive power P4 of a reduction-side surface of the second lens, refractive power P5 of a magnification-side surface of the third lens, and focal length f of an entire system are satisfied: ?3.0?1/(P4×f)??0.4??(1); and ?2.0?1/(P5×f)??0.2??(2).
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: March 15, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Chikara Yamamoto
  • Publication number: 20150102211
    Abstract: The present disclosure provides a telecentric optical assembly comprising a first portion of a telecentric optical link including a first kinematic mount having alignment structures, where the first kinematic mount can be attached to a first substrate having a first array of active optical elements; and a second portion of the telecentric optical link including a second kinematic mount having recesses configured to mate with the alignment structures, where the second kinematic mount can be attached to a second substrate having a second array of active optical elements. Additionally, the first and second kinematic mounts, when mated, can align optical beams between the first array of active optical elements and the second array of active optical elements.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 16, 2015
    Inventors: Sagi Varghese Mathai, Paul Kessler Rosenberg, Michael Renne Ty Tan
  • Patent number: 9001429
    Abstract: In an optical system for projection that is telecentric on a reduction side, a correction lens group substantially consisting of a part of lens groups in the optical system for projection is configured to move in the direction of an optical axis to correct a shift in a focal position caused by a change in temperature, and predetermined conditional formulas are satisfied.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: April 7, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Yukiko Nagatoshi
  • Publication number: 20150070778
    Abstract: A variable magnification projection optical system substantially consisting of two lens groups of a first lens group having a positive refractive power and is moved during magnification change, and a second lens group having a positive refractive power and is moved during magnification change, in which the variable magnification projection optical system is configured such that the reduction side is telecentric.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Inventor: Masaru AMANO
  • Patent number: 8976454
    Abstract: A variable-magnification projection optical system substantially consists of a negative first lens group that is disposed at the most enlargement-side position and is fixed during magnification change, a positive last lens group that is disposed at the most reduction-side position and is fixed during magnification change, and a plurality of lens groups that are disposed between the first lens group and last lens group and are moved during magnification change. The lens groups that are moved during magnification change substantially consist of three lens groups, wherein the most enlargement-side lens group is a negative lens group. Predetermined conditional expressions relating to a back focus of the entire system on the reduction side at the wide-angle end, a focal length of the entire system at the wide-angle end, a focal length of the last lens group, and a focal length of the first lens group are satisfied.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: March 10, 2015
    Assignee: Fujifilm Corporation
    Inventors: Yukiko Nagatoshi, Akiko Nagahara
  • Patent number: 8976455
    Abstract: A variable-magnification projection optical system substantially consists of a negative first lens group that is disposed at the most enlargement-side position and is fixed during magnification change, a positive last lens group that is disposed at the most reduction-side position and is fixed during magnification change, and a plurality of lens groups that are disposed between the first lens group and last lens group and are moved during magnification change. The most enlargement-side lens group (the second lens group) of the lens groups that are moved during magnification change has a negative refractive power. Predetermined conditional expressions relating to a back focus of the entire system on the reduction side at the wide-angle end, a focal length of the entire system at the wide-angle end, a focal length of the second lens group and a focal length of the last lens group are satisfied.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 10, 2015
    Assignee: Fujifilm Corporation
    Inventors: Akiko Nagahara, Yukiko Nagatoshi
  • Patent number: 8947796
    Abstract: The present disclosure provides a telecentric optical assembly comprising a first portion of a telecentric optical link including a first kinematic mount having alignment structures, where the first kinematic mount can be attached to a first substrate having a first array of active optical elements; and a second portion of the telecentric optical link including a second kinematic mount having recesses configured to mate with the alignment structures, where the second kinematic mount can be attached to a second substrate having a second array of active optical elements. Additionally, the first and second kinematic mounts, when mated, can align optical beams between the first array of active optical elements and the second array of active optical elements.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 3, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sagi Varghese Mathai, Paul Kessler Rosenberg, Michael Renne Ty Tan
  • Publication number: 20140347740
    Abstract: In an optical system for projection that is telecentric on a reduction side, a correction lens group substantially consisting of a part of lens groups in the optical system for projection is configured to move in the direction of an optical axis to correct a shift in a focal position caused by a change in temperature, and predetermined conditional formulas are satisfied.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventor: Yukiko NAGATOSHI
  • Publication number: 20140313589
    Abstract: The invention relates to a telecentric modular zoom system for mapping an object plane on a sensor, in particular in a digital transmitted light microscope or incident light microscope having interchangeable lenses, comprising a fixed tube lens unit (LG1) and multiple optical assemblies (LG2, LG3, LG4, LG5, LG6), at least two of which are adjustably arranged relative to one another for the purpose of changing the magnification, characterized in that [sic]. According to the invention, a physical aperture (BL) conjugated relative to the rear focal points of the objectives used and having a variable diameter may be arranged in the beam path, wherein the rear focal points of the objective may be mapped in the space between a sensor image (BIE) and the intermediate image (ZB), the images of the rear focal points of the objectives (aperture BL) and the sensor image (BIE) do not lie within or migrate through the optical assemblies (LG2, LG3, LG4, LG5, LG6, LG7).
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicant: Carl Zeiss Microscopy GmbH
    Inventors: Johannes WINTEROT, Hans-Juergen Dobschal, David Shafer
  • Patent number: 8867140
    Abstract: A compact, lens suitable for airborne photography and mapping has distortion less than 0.6% and is athermal from ?15° C. to +40° C. The lens is near-telecentric to less than 11°, apochromatic over the wavelength range 450 nm-650 nm, and has a full field of view of 60° (high quality field over 53°). The lens can be secondary color corrected. In embodiments, the focal length is 101 mm and the back working distance is more than 10 mm. Embodiments have a focal plane diameter of 104 mm and are compatible for use with a CMOS 1.8 gigapixel multiple FPA. In embodiments, the lens comprises three groups of optical elements, with an aperture located within the second optical group. In some embodiments the first group includes two elements, the second group includes six or seven elements, and the third group include three elements. In embodiments the lens (without window) is less than 180 mm long.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: October 21, 2014
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Mark L Oskotsky, Michael J Russo, Gerard M Perron, David J Korwan
  • Patent number: 8830298
    Abstract: A wide-angle lens comprising: an imaging lens system, including: a front lens group, an aperture, and a rear lens group, arranged in that order from an object side to an image side; wherein said front lens group comprises first and second lens elements, having negative power respectively, and a third lens that is a positive lens, arranged in that order from the object side to an aperture side; wherein said rear lens group comprises fourth and fifth lens elements, having positive power respectively, arranged in order from the aperture side to the image side; where an incident angle to an optical axis of the imaging lens system of a chief ray of a maximum angle of view passing through the aperture is ?I, the following Expression 1 is satisfied. 40° (degrees)<?I<60° (degrees)??Expression 1.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: September 9, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Issei Abe, Hayato Yoshida, Naoki Moniwa
  • Publication number: 20140160338
    Abstract: A finder optical system includes, in the order from a display device side to an eye point side, a first lens group to increase a light beam height of a light beam bundle incident from a display device side and to emit the light beam bundle to the eye point side, and a second lens group having an image formation action.
    Type: Application
    Filed: November 15, 2013
    Publication date: June 12, 2014
    Applicant: Sony Corporation
    Inventor: Masahito Kikuchi
  • Publication number: 20140126067
    Abstract: A variable-magnification projection optical system substantially consists of a negative first lens group that is disposed at the most enlargement-side position and is fixed during magnification change, a positive last lens group that is disposed at the most reduction-side position and is fixed during magnification change, and a plurality of lens groups that are disposed between the first lens group and last lens group and are moved during magnification change. The most enlargement-side lens group (the second lens group) of the lens groups that are moved during magnification change has a negative refractive power. Predetermined conditional expressions relating to a back focus of the entire system on the reduction side at the wide-angle end, a focal length of the entire system at the wide-angle end, a focal length of the second lens group and a focal length of the last lens group are satisfied.
    Type: Application
    Filed: December 27, 2013
    Publication date: May 8, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Akiko NAGAHARA, Yukiko NAGATOSHI
  • Patent number: 8693105
    Abstract: A variable magnification optical system for projection includes a first-lens-group having negative refractive power, and which is fixed when magnification of the system is changed, a second-lens-group having negative refractive power, and which is movable when magnification of the system is changed, a third-lens-group having positive refractive power, and which is movable when magnification of the system is changed, and a fourth-lens-group having positive refractive power, and which is fixed when magnification of the system is changed, which are arranged from the magnification side of the system in the order mentioned. The reduction side of the variable magnification optical system is telecentric, and formula 1.5<Bf/fw is satisfied, where Bf: back focus in air of entire system at wide angle end, and fw: focal length of entire system at wide angle end.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: April 8, 2014
    Assignee: Fujifilm Corporation
    Inventors: Yukiko Nagatoshi, Akiko Nagahara
  • Publication number: 20130335829
    Abstract: A bi-telecentric interferometer continuous zoom imaging device, wherein a collimation object lens set, a telecentric imaging module, a telecentric continuous zoom module, and a CCD of modular design are formed on an integral circular tube main body, and can be calibrated and positioned separately. Then, a multi-partition isolation design is used to partition a housing into independent space for said various modules, to facilitate maintenance and also achieve customization. Collimation object lens set converts parallel light beams of interference pattern into a convergent light beam, and guides it to an imaging route through optical route adjusting means. Then, telecentric imaging module converts interference pattern on imaging route into an telecentric image parallel to optical axis, and telecentric continuous zoom module adjusts a magnifying ratio of telecentric image, then outputs an object image to form it on CCD, thus improving optical distortion and inferior resolution of the prior art.
    Type: Application
    Filed: June 13, 2012
    Publication date: December 19, 2013
    Applicant: HSINTEK OPTICAL INSTRUMENT CO.
    Inventors: HSIEN-HUNG MENG, SHIN-GWO SHIUE, JIM CHUNG
  • Publication number: 20130329304
    Abstract: The present invention relates generally to a head-mounted projection display, and more particularly, but not exclusively to a polarized head-mounted projection display including a light engine and a compact, high-performance projection lens for use with reflective microdisplays.
    Type: Application
    Filed: July 31, 2013
    Publication date: December 12, 2013
    Applicant: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Hong Hua, Rui Zhang
  • Patent number: 8596879
    Abstract: An optical cable including connectors includes a plurality of waveguide layers each including a plurality of optical channels each having a first end and a second end. First and second connectors each include a plurality of electrically conductive pins, and each of the plurality of optical channels of each of the waveguides, at their first and second ends, are connected to a specified pin on each of the first and second connectors, respectively. A first optical channel connection pattern on the first connector, and a second optical channel connection pattern on the second connector. The first optical channel connection pattern on the first connector is a different pattern than the second optical channel connection pattern on the second connector in relation to a connection hole pattern which is the same for both the first and second connectors.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: December 3, 2013
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Frank R. Libsch
  • Publication number: 20130308199
    Abstract: A bi-telecentric continuous zoom imaging device, comprising: a collimation object lens set, to convert parallel light beams of interference patterns into a convergent light beam, and to guide it onto an imaging route through optical route adjusting means. A telecentric imaging module converts interference pattern on imaging route into a telecentric image paralleling to an optical axis. Then, a bi-telecentric continuous zoom module adjusts a magnification ratio of telecentric image, and then outputs an object image. Finally, object image is formed on a charge coupled device (CCD). Through application of bi-telecentric continuous zoom imaging device, deficiency of conventional measurement system can be improved, even if the object distance is changed the magnification ratio of image can be kept, minimum optical distortion and good resolution can also be maintained.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 21, 2013
    Applicant: HSINTEK OPTICAL INSTRUMENT CO.
    Inventors: SHIN-GWO SHIUE, JIM CHUNG, HSIEN-HUNG MENG
  • Publication number: 20130258492
    Abstract: An imaging lens consists of a negative first lens having a concave object-side surface, a positive second lens, a negative third lens, a positive fourth lens having a convex object-side surface, and a positive fifth lens, which are in this order from an object side. A stop is arranged between an image-side surface of the first lens and an object-side surface of the third lens. When the focal length of an entire system is f, and the focal length of the first lens is f1, and the focal length of the second lens is f2, the following formula is satisfied: ?1.30<f1/f2?0.65??(7).
    Type: Application
    Filed: May 31, 2013
    Publication date: October 3, 2013
    Inventor: Taro ASAMI
  • Publication number: 20130141695
    Abstract: Scanning optical beam imaging systems for imaging a surface with convex curvature are provided. The systems include a sphero-telecentric objective, wherein a scanning radius of curvature of the sphero-telecentric objective is greater than an apical radius of curvature of the surface and less than or equal to four times an apical radius of curvature of the surface.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 6, 2013
    Applicant: Bioptigen, Inc.
    Inventor: Bioptigen, Inc.
  • Publication number: 20130050841
    Abstract: The present disclosure provides a telecentric optical assembly comprising a first portion of a telecentric optical link including a first kinematic mount having alignment structures, where the first kinematic mount can be attached to a first substrate having a first array of active optical elements; and a second portion of the telecentric optical link 202 including a second kinematic mount having recesses configured to mate with the alignment structures, where the second kinematic mount can be attached to a second substrate having a second array of active optical elements. Additionally, the first and second kinematic mounts, when mated, can align optical beams between the first array of active optical elements and the second array of active optical elements.
    Type: Application
    Filed: May 7, 2010
    Publication date: February 28, 2013
    Inventors: Sagi Varghese Mathai, Paul Kessler Rosenberg, Michael Renne Ty Tan
  • Publication number: 20130050840
    Abstract: A compact, lens suitable for airborne photography and mapping has distortion less than 0.6% and is athermal from ?15° C. to +40° C. The lens is near-telecentric to less than 11°, apochromatic over the wavelength range 450 nm-650 nm, and has a full field of view of 60° (high quality field over 53°). The lens can be secondary color corrected. In embodiments, the focal length is 101 mm and the back working distance is more than 10 mm. Embodiments have a focal plane diameter of 104 mm and are compatible for use with a CMOS 1.8 gigapixel multiple FPA. In embodiments, the lens comprises three groups of optical elements, with an aperture located within the second optical group. In some embodiments the first group includes two elements, the second group includes six or seven elements, and the third group include three elements. In embodiments the lens (without window) is less than 180 mm long.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 28, 2013
    Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.
    Inventors: Mark L. Oskotsky, Michael J. Russo, JR.
  • Patent number: 8374068
    Abstract: A low cost and lightweight interchangeable lens system is provided. The lens system includes two aspheric elements that is usable both for page-based and bit-based data storage systems. The lens system has a large field of view up to ±50 degrees and a high numerical aperture up to 0.8. The invention reduces cost and weight of the objective lenses and is usable with the servoing technology. The invention provides a long working distance of 20% of the focal length and provides sufficient physical space to accommodate media and aberration corrections, which enable a media interchangeable and compatible system among the both optical recording formats.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: February 12, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yuzuru Takashima, Lambertus Hesselink
  • Publication number: 20120293774
    Abstract: In a projector lens system including at least three lens elements and telecentric on a side of an optical modulator, two of the lens elements located on outer most ends of the projector lens system facing conjugate points of the projector lens system consist of plastic lenses, and an aperture stop of the projector lens system is located between the two outer most lens elements while at least one of the lens elements other than the two outer most lens elements most adjacent to the aperture stop consists of a glass lens. Thereby, the cost and weight of the projector lens system can be reduced while achieving the required optical properties.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 22, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Masahiro INOUE, Shinichi KADOWAKI
  • Publication number: 20120251045
    Abstract: An optical coupling system includes a first unit including a source of light or a first multi-core optical fiber, each of the source and the first multi-core optical fiber including at least a first aperture, a second unit including a second multi-core optical fiber including at least a second aperture corresponding to the first aperture of the first unit, and a lens array unit redirecting light between the first unit and the second unit, the lens array unit substantially matching light rays transmitted or received between the first aperture of the first unit and the corresponding second aperture of the second unit.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Applicant: International Business Machines Corporation
    Inventors: Russell A. Budd, Frank R. Libsch
  • Patent number: 8274721
    Abstract: A variable view imaging system for observation of micro object with variable view orientation and position includes a telecentric lens group, a scanning mirror, wedge prisms, a deformable mirror and related optical elements. The combination of a scanning mirror and a telecentric lens group decouples the motion of scanning mirror and the view angle. The view angle is determined only by the angle of the wedge prisms. This design increases the zenith angle of the view and simplifies the kinematics of the system. The wedge prisms and the scanning mirror can supply a flexible view in a compact way. The wavefront error induced by the wedge prisms is corrected by the deformable mirror. In order to achieve the desired view state during operation, the scanning mirror angle and the wedge prisms angle are calculated iteratively based on the kinematics and Jacobian matrix of system.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: September 25, 2012
    Assignee: Korea Advanced Institute of Science and Technology (Kaist)
    Inventors: Hyungsuck Cho, Xiaodong Tao
  • Patent number: 8009365
    Abstract: The projection optical system uses a plurality of wavelengths or a wavelength band within a wavelength range from a visible region to a near ultraviolet region. The double-telecentric projection optical system includes: a first lens group with a positive power; a second lens group with a negative power, including a predetermined lens or lenses; and a third lens group with a positive power, including a stop and at least two positive lenses satisfying a predetermined condition relating to refractive index. The projection optical system satisfies a predetermined condition relating to a composite focal length of the first lens group and the second lens group, and a focal length of the third lens group.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: August 30, 2011
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Masayuki Imaoka
  • Patent number: 7965449
    Abstract: A projection lens system includes, in order from the magnification side, a negative first lens group and a positive second lens group, and is telecentric on the reduction side. The first lens group includes a first lens formed as an aspheric lens which is disposed closest to the magnification side. The second lens group includes a second lens formed as a positive lens, in or near which an aperture diaphragm is disposed, disposed closest to the magnification side, and an aspheric lens. Between the aperture diaphragm and the aspheric lens of the second lens group, two or more negative lenses and two or more cemented surfaces are disposed. And, 0.10<f/f2-1<0.30, and N2-1>1.75 are satisfied. Here, f denotes a focal length of the whole system, f2-1 denotes a focal length of the second lens, and N2-1 is a refractive index of the second lens at the d-line.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 21, 2011
    Assignee: Fujinon Corporation
    Inventor: Masanao Kawana
  • Patent number: RE45258
    Abstract: In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the image display panel. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the image display panel is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 25, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Takaura, Kazuhiro Fujita, Nobuo Sakuma