Having Curvilinear Lens Patents (Class 359/743)
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Patent number: 12254598Abstract: An information processing apparatus divides a plurality of objects into objects of interest and objects of non-interest, and generates a projection image of the objects of non-interest integrated into one image and a projection image of the objects of interest. The information processing apparatus composes the projection image of the objects of interest and the projection image of the objects of non-interest, and displays a resultant composed image on a display device.Type: GrantFiled: October 26, 2022Date of Patent: March 18, 2025Assignee: Canon Kabushiki KaishaInventor: Mitsuyoshi Arakawa
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Patent number: 12013538Abstract: Disclosed herein is augmented reality (AR) eyewear with at least one array of individually-adjustable optical elements whose levels of light transmission and/or reflectivity are selectively and individually adjusted by application of electrical current, or by exposure to an electromagnetic field, via transparent (or translucent) electroconductive pathways. Optical elements in this array collectively comprise a section of a Fresnel Reflector which has been selected (e.g. extracted or “cut out”) from the right side or the left side of a Fresnel Reflector.Type: GrantFiled: December 24, 2022Date of Patent: June 18, 2024Assignee: Holovisions LLCInventor: Robert A. Connor
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Patent number: 12001030Abstract: A lens assembly includes a first lens and a second lens. The first lens has a first lens surface and a second lens surface opposite to the first lens surface. The second lens surface includes a first plurality of Fresnel structures. The second lens, coupled to the first lens, has a third lens surface and a fourth lens surface opposite to the third lens surface. The third lens surface includes a second plurality of Fresnel structures. The third lens surface faces the first lens and the second lens surface faces the second lens. A headset that includes a display and the lens assembly is also disclosed. A method of transmitting, with the lens assembly, light from the display toward an image plane is also disclosed.Type: GrantFiled: September 27, 2022Date of Patent: June 4, 2024Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Brian Wheelwright, Jacques Gollier
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Patent number: 11982877Abstract: A method comprises: disposing a physical landmark upon an eye of a user; capturing at least one image of the eye of the user with an image sensor while the eye is illuminated, wherein the image includes an image of the physical landmark and at least one other point on the surface of the eye outside of the cornea; processing the at least one image to obtain at least one metric of the eye of the user; and determining, based on the at least one metric, at least one parameter of a daily use contact lens to be worn on the eye of the user.Type: GrantFiled: February 16, 2023Date of Patent: May 14, 2024Assignee: Innovega, Inc.Inventors: Jerome Legerton, Jay Marsh
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Patent number: 11947095Abstract: A non-tracking non-imaging solar concentrator system, which is able to concentrate both beam light and diffuse light with high concentration ratio, comprises a Compound Parabolic Concentrator (CPC) and a domed divergent Fresnel lens. The system is configured by mounting the domed divergent Fresnel lens on the top of CPC, or making a chamber with its bottom thin transparent wall shaped into CPC and its top thin transparent wall shaped into domed divergent Fresnel lens to form a bulb-like close structure solar concentrator. Wherein, the non-image CPC with small acceptance half-angle is used to concentrate both beam light and diffuse light with high concentration ratio, and the domed divergent Fresnel lens is used to refract the incident light to enlarge the acceptance angle of CPC, and therefore to realize stationary concentration. The bulb-like close structure concentrators are stacked together to realize arbitrary high concentration ratio of solar concentrator.Type: GrantFiled: April 13, 2020Date of Patent: April 2, 2024Inventor: Yonghua Wang
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Patent number: 11931244Abstract: The invention relates to an artificial ophthalmic lens (20) containing an anterior optical surface (21) and a posterior optical surface (22), at least one of which contains a multifocal optical diffractive profile (25). A cross apodized profile part (25?) is formed on the diffractive profile (25) wherein phase shifting elements (27) are provided alternately forming the elements of a decreasingly apodized series (40) and an increasingly apodized series (41) in such a way that the decreasing and increasing elements of the two series (40, 41) form envelope curves that meet at a common intersection point (45). The invention further relates to a method for the production of such an artificial ophthalmic lens (20).Type: GrantFiled: December 28, 2018Date of Patent: March 19, 2024Assignee: MEDICONTUR ORVOSTECHNIKAI KFT.Inventors: Laszlo Ferenc Kontur, Bence Papdi, Peter Koncsar, Daniel Bercsenyi, Balazs Fekete, Gabor Erdei
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Patent number: 11926748Abstract: Thermoset compositions and methods for forming three-dimensional articles via an additive fabrication process, and articles made therefrom are disclosed herein. In an embodiment, a composition comprises a first network-forming component comprising a first oligomer comprising a backbone and having at least 2 polymerizable groups, one or more first network monomers, and a first network initiator. The backbone of the first oligomer comprises a polyepoxide based on Bisphenol A, F, or S, a polyepoxide based on hydrogenated Bisphenol A, F, or S, a polycarbonate, or a polyimide. The composition may further comprise a second network-forming component.Type: GrantFiled: October 4, 2022Date of Patent: March 12, 2024Assignee: STRATASYS, INC.Inventors: Paulus Antonius Maria Steeman, Marco Marcus Matheus Driessen, Guido Joseph Elisabeth Hensen
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Patent number: 11877041Abstract: An image sensor including a planar sensor array, a lens configured to form an optical image on the planar sensor array and characterized by a locus of focal points on a curved surface, and a cover glass with multiple thickness levels or multiple cover glasses of different sizes. The one or more cover glasses are configured to shift the locus of focal points for large field angles, such that there are multiple intersections between the planar sensor array and the locus of focal points for a large FOV, and thus multiple zones with best focus on the planar sensor array.Type: GrantFiled: July 23, 2020Date of Patent: January 16, 2024Assignee: QUALCOMM IncorporatedInventors: Russell Gruhlke, Ravindra Vaman Shenoy, Jon Lasiter, Donald William Kidwell, Khurshid Syed Alam, Kebin Li
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Patent number: 11781732Abstract: A lighting fixture with reduced glare is provided. Lighting fixtures described herein use a lens assembly to redirect light away from a housing in order to reduce a unified glaring ratio (UGR) (e.g., when viewed crosswise or endwise). The lens assembly may further provide diffusive properties which result in a more pleasing and soft light over traditional lighting fixtures. In aspects described herein, the UGR of troffer-style lighting fixtures can be improved (e.g., reduced) through lens assemblies having one or more light redirection features configured to particularly redirect light emitted at high v-angles (e.g., light emitted sideways relative to the housing at v-angles greater than 70 degrees). For example, the lens assembly may include an inner prismatic surface of a lens, an inner lens, a louver assembly (e.g., over or under a lens), or a reflector to achieve this light redirection.Type: GrantFiled: December 22, 2021Date of Patent: October 10, 2023Assignee: IDEAL Industries Lighting LLCInventors: Jin Hong Lim, Mark P. Boomgaarden
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Patent number: 11556018Abstract: An ophthalmic multifocal lens, and a method of manufacturing same, at least comprising focal points for near, intermediate and far vision. The lens comprises a light transmissive lens body providing a refractive focal point, and a periodic light transmissive diffraction grating, extending concentrically over at least part of a surface of the lens body and providing a set of diffractive focal points. The diffraction grating is designed to operate as an optical wave splitter, the refractive focal point providing the focal point for intermediate vision and the diffractive focal points providing the focal points for near and far vision. The diffraction grating has an optical transfer function comprising a continuous periodic phase profile function having an argument modulated as a function of the radial distance (r) to the optical axis of the lens body, thereby tuning the light distribution in the focal points.Type: GrantFiled: July 17, 2018Date of Patent: January 17, 2023Assignee: VSY BIYOTEKNOLOJI VE ILAÇ SAN. A.S.Inventors: Sven Thage Sigvard Holmström, Isa Çim, Hakan Urey
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Patent number: 11549654Abstract: A light guide structure with jagged protrusions is configured in a lighting device of a mobile vehicle. The light guide structure includes a light injecting surface and a light emitting surface. The light emitting surface includes a middle section and two side sections deployed respectively at opposite ends of the middle section. The side sections have a plurality of jagged protrusions forming a light guiding area. The extending direction of the jagged protrusions intersects with the light emitting direction. A light source module forms an irradiation area by the light guide structure, the light guiding area extending the width of both sides of the irradiation area, the beam contour being enlarged evenly. The disclosure also provides a headlight structure, a light source module having the light guide structure and a convex lens configured sequentially in the light emitting direction.Type: GrantFiled: February 1, 2021Date of Patent: January 10, 2023Assignee: TAN DE TECH CO., LTD.Inventors: Chao Pai Lee, Cheng Chih Lai, Chung Chiang Pan
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Patent number: 11501512Abstract: An image processing apparatus generates, based on an input image, region information indicating a region including an object, determines, based on the region information, a region including an object to be transmitted, and transmits, based on the region information indicating the determined region, an image of the object and region information indicating the determined region.Type: GrantFiled: December 4, 2019Date of Patent: November 15, 2022Assignee: CANON KABUSHIKI KAISHAInventor: Hironao Ito
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Patent number: 11492505Abstract: Thermoset compositions and methods for forming three-dimensional articles via an additive fabrication process, and articles made therefrom are disclosed herein. In an embodiment, a composition comprises a first network-forming component comprising a first oligomer comprising a backbone and having at least 2 polymerizable groups, one or more first network monomers, and a first network initiator. The backbone of the first oligomer comprises a polyepoxide based on Bisphenol A, F, or S, a polyepoxide based on hydrogenated Bisphenol A, F, or S, a polycarbonate, or a polyimide. The composition may further comprise a second network-forming component.Type: GrantFiled: October 30, 2017Date of Patent: November 8, 2022Assignee: Covestro (Netherlands) B.V.Inventors: Paulus Antonius Maria Steeman, Marco Marcus Matheus Driessen, Guido Joseph Elisabeth Hansen
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Patent number: 11269175Abstract: The present invention relates to an eyepiece optical system and device with a large field-of-view angle and high image quality, comprising a first lens group and a second lens group arranged successively along an optical axis from a human eye observing side to a micro display. The first lens group is composed of one or more lenses, and the second lens group comprises a Fresnel lens. The Fresnel lens comprises a Fresnel surface. By the use of a combination of a novel optical surface shape, i.e., the Fresnel surface shape, and traditional optical spherical and aspherical surface shapes, when focal lengths of various lenses and lens groups meet particular conditions, significant elimination of system aberration, reduction of the sensitivity of various optical components, and easy processing and assembly of the components can be achieved.Type: GrantFiled: January 25, 2021Date of Patent: March 8, 2022Assignee: Shenzhen Nade Optical Co., LtdInventors: Hongpeng Cao, Jianfei Guo, Huajun Peng
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Patent number: 11205581Abstract: A system and apparatus for thermal treatment of a substrate with improved thermal uniformity is provided. In some embodiments, the system includes a heating element, a substrate-retaining element operable to retain a substrate, and a reflective structure operable to direct thermal energy of the heating element towards the substrate retained in the substrate-retaining element. The reflective structure includes a textured portion wherein a texture of the textured portion is configured to direct the thermal energy towards the retained substrate. In some such embodiments, the texture includes a roughened irregular surface configured to direct the thermal energy towards the retained substrate. In some such embodiments, the texture includes a plurality of circumferential ridge structures configured to direct the thermal energy towards the retained substrate.Type: GrantFiled: July 25, 2018Date of Patent: December 21, 2021Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventor: Shih-Wei Hung
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Patent number: 11067724Abstract: A near-eye display system includes a display panel to emit display light representative of a display image and a lens assembly disposed along an optical axis. The lens assembly includes a first phase mask plate having a first major surface facing the display and a second major surface opposite the first major surface, the second major surface implementing a first freeform Fresnel lens structure, and further includes a second phase mask plate adjacent and parallel to the first phase mask plate and having a third major surface facing the second major surface and an opposing fourth majors surface, the third major surface implementing a second freeform Fresnel lens structure. A pose of at least one of the first and second phase mask plates relative to the other is configured to be adjusted so as to adjust an optical power of the lens assembly.Type: GrantFiled: January 28, 2019Date of Patent: July 20, 2021Assignee: Google LLCInventors: John D. Perreault, Oscar Martinez
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Patent number: 10727094Abstract: A system and apparatus for thermal treatment of a substrate with improved thermal uniformity is provided. In some embodiments, the system includes a heating element, a substrate-retaining element operable to retain a substrate, and a reflective structure operable to direct thermal energy of the heating element towards the substrate retained in the substrate-retaining element. The reflective structure includes a textured portion wherein a texture of the textured portion is configured to direct the thermal energy towards the retained substrate. In some such embodiments, the texture includes a roughened irregular surface configured to direct the thermal energy towards the retained substrate. In some such embodiments, the texture includes a plurality of circumferential ridge structures configured to direct the thermal energy towards the retained substrate.Type: GrantFiled: October 6, 2016Date of Patent: July 28, 2020Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTDInventor: Shih-Wei Hung
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Patent number: 10698235Abstract: An ophthalmic device including liquid crystal alignment features is disclosed herein. An example device may include first and second optical elements. The first optical element may include first liquid crystal alignment features formed on a first surface. The second optical element may include a first optical diffraction grating formed on a second surface, and second liquid crystal alignment features formed on the second surface. The first surface of the first optical element may face the second surface of the second optical element, and a first liquid crystal material may be disposed between the first and second surfaces of the first and second optical elements.Type: GrantFiled: February 16, 2017Date of Patent: June 30, 2020Assignee: Verily Life Sciences LLCInventors: Christian Gutierrez, Dmytro Reznikov
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Patent number: 10692220Abstract: Techniques facilitating object classification based on decoupling a background from a foreground of an image are provided. A system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a model that is trained on images that comprise respective backgrounds and respective foregrounds that are interleaved. The model can be trained to detect the respective backgrounds with a defined confidence level. The computer executable components can also comprise an extraction component that employs the model to identify a background of a received image based on the defined confidence level and to decouple a foreground object of the received image based on identification of the background of the received image.Type: GrantFiled: October 18, 2017Date of Patent: June 23, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Peng Gao, Guo Qiang Hu, Jing Chang Huang, Jun Chi Yan, Jun Zhu
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Patent number: 9803834Abstract: According to an embodiment of the present inventive concept there is provided an arrangement 4 comprising: an optical device 8 including a radially inner beam forming portion 10 and a radially outer portion 12, at least partly enclosing the radially inner portion 10. The arrangement 4 further comprises a reflector 6 arranged to reflect, in a first direction towards the radially outer portion 12, light emitted by a light source 2 such that a first optical path is formed from the light source 2 to the radially outer portion 12, via the reflector 6. The radially outer portion 12 is transparent such that incident light reaching the radially outer portion 12 along the first optical path exits the radially outer portion 12 in a direction parallel to the first direction, and at least one of scattering and attenuating for light reaching the radially outer portion 12 along a second optical path extending directly between the light source 2 and the radially outer portion 12.Type: GrantFiled: February 17, 2014Date of Patent: October 31, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Johannes Gerrit Jan Beijer, Oliver Dross
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Patent number: 9632295Abstract: An optical member includes a refractive portion adapted to refract light, a first total internal reflection surface adjacent to and disposed about at least a portion of the refractive portion, and a second total internal reflection surface displaced from the first total internal reflection surface distal to the refractive portion and disposed about at least a portion of the first total internal reflection surface.Type: GrantFiled: August 18, 2014Date of Patent: April 25, 2017Assignee: Cree, Inc.Inventor: Mario A. Castillo
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Patent number: 9488814Abstract: An optical lens having an incident surface on which the light emitted from a light emitting diode is incident and having a concave portion into which the light is received and an emitting surface emitting the light incident on the incident surface therethrough, the optical lens including: a plurality of refraction prevention portions protruded unitarily from the emitting surface to allow the light around a light axis emitted through the emitting surface to travel straight, without having any refraction, each refraction prevention portion having an orthogonal surface formed thereon to the advancing direction of the light incident through the incident surface.Type: GrantFiled: November 8, 2013Date of Patent: November 8, 2016Assignees: ASIABRIDGE JAPAN CO., LTD., J-TEK CO., LTD.Inventors: Hae Woon Jeong, Hidenori Nonaka
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Patent number: 9369691Abstract: The present disclosure relates to a method for transmitting two consecutive pairs of images. The method may include decimating each image with a ratio of 2, assembling the two decimated images of each pair in a composite image, transmitting the composite images, and reconstructing complete images from the composite images. In decimation, the information removed from the images of the first pair may be kept in the images of the second pair, from the spatial point of view, and the complete images may be reconstructed by de-interlacing processing from the composite images.Type: GrantFiled: September 15, 2011Date of Patent: June 14, 2016Assignee: STMICROELECTRONICS (GRENOBLE 2) SASInventors: Frankie Eymard, Jean-Louis Labyre
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Publication number: 20150103410Abstract: A head-up display apparatus projects a display image onto a projection surface of a windshield so that a viewer views a virtual image of the display image from an eye box. A screen used in the apparatus is constructed of a plurality of micromirrors. Each micromirror has a convex surface portion being curved to magnify a laser beam toward the eye box. A scanned surface of the screen is provided by an array of the convex surface portions. In a cross section intersecting the scanned surface, adjacent convex surface portions have different curved shapes. Thus, brightness unevenness of the display image caused by interference of laser beams can be reduced while maintaining a simple structure of the screen such as a microlens array.Type: ApplicationFiled: May 28, 2013Publication date: April 16, 2015Inventors: Hiroshi Ando, Takayuki Fujikawa
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Patent number: 8929001Abstract: According to one embodiment, a display device includes an image projection unit, an optical unit and a mounting unit. The image projection unit emits an image light. The optical unit includes a first optical layer having first and second major surfaces, a second optical layer having third and fourth major surfaces and an intermediate layer provided between the second and third major surfaces. At least a portion of the image light travelling from the first major surface toward the second major surface is reflected by the intermediate layer. At least a portion of a background light travelling from the fourth major surface toward the third major surface is transmitted by the intermediate layer. The first major surface or the fourth major surface is a curved surface. The mounting unit is linked to the image projection unit and the optical unit.Type: GrantFiled: June 25, 2012Date of Patent: January 6, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Aira Hotta, Shigeru Shimakawa, Haruhiko Okumura, Akihisa Moriya, Takashi Sasaki
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Patent number: 8917459Abstract: An ergonomic vertical redirection vision system comprises glasses or goggles with lenses modified to include a fresnel prism that vertically redirects light. The curved fresnel prism is a novel curved refractive element with unique advantages compared to a flat fresnel prism. The curved fresnel prism may be achromatized by the addition of an appropriate diffractive surface thereby creating a hybrid achromat or diffractive/refractive optical element (DROE). Looking through the modified eyewear will redirect the user's visual field up or down, depending on the configuration. Upward vision redirection improves ergonomics and aerodynamics for several sports including bicycle riding, swimming, downhill ski racing, and motorcycle racing. Downward vision redirection improves the ergonomics of reading a book, working on a laptop or pad computer, or taking notes in a class.Type: GrantFiled: May 23, 2012Date of Patent: December 23, 2014Inventors: Eric A. Klein, Adam Norton
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Patent number: 8848295Abstract: Gradient index lenses with no aberrations and related methods for making such lenses are described. In one aspect, a gradient index lens can be a substantially spherically-shaped lens that has at least one side that is flattened such that a locus of focal points resides on a plane. A method for making a gradient index lens can include forming material layers, each of the material layers defining an effective refractive index, and laminating the material layers together to form a substantially spherically-shaped lens having at least one side that is flattened to a substantially planar surface. The material layers can have a gradient refractive index distribution such that a locus of focal points resides on the substantially planar surface.Type: GrantFiled: October 6, 2010Date of Patent: September 30, 2014Assignee: Duke UniversityInventors: David R. Smith, Nathan B. Kundtz
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Patent number: 8808586Abstract: A molded part prepared by a mold transfer method using a die, including a surface which includes a slope, wherein a direction of a normal line of the slope is different from a die releasing direction; and a pattern which is formed on the surface and which includes grooves located on a portion of the slope so as to extend along the slope in the slanting direction of the slope. An optical element, which has an anti reflection function, including the molded part mentioned above, wherein the interval between two adjacent grooves is not greater than the wavelength of light irradiating the optical element. An optical device including a light source configured to emit light; and the optical element mentioned above which processes the light emitted by the light source.Type: GrantFiled: June 26, 2007Date of Patent: August 19, 2014Assignee: Ricoh Company, LimitedInventor: Hiroyuki Endo
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Patent number: 8749891Abstract: The collimating optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first collimation axis, and an included angle formed between the first collimation axis and an optic axis is greater than ?15° and smaller than ?15°. Thus, the light after passing the collimating optical element forms a one-dimensional collimating light.Type: GrantFiled: December 9, 2011Date of Patent: June 10, 2014Assignee: Industrial Technology Research InstituteInventors: Hui-Hsiung Lin, Wen-Hsun Yang, Chin-Ju Hsu, Yu-Nan Pao
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Patent number: 8659840Abstract: According to one embodiment, an optical element includes a first optical sheet having a first major surface. The first optical sheet includes a first Fresnel lens provided in the first major surface. An optical axis of the first Fresnel lens at the first major surface is disposed at a position different from a position of a center of an outline of the first major surface.Type: GrantFiled: January 21, 2011Date of Patent: February 25, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Lisa Masuda, Shigeru Shimakawa, Naotada Okada, Kazuo Horiuchi, Haruhiko Okumura, Takashi Sasaki, Hiromi Suzuki
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Patent number: 8654456Abstract: A photographic optical system includes, in order from an object side to an image side, a first lens unit, a second lens unit for focusing, and a third lens unit. The first lens unit includes a first lens sub-unit having a positive refractive power and a second lens sub-unit. The first lens unit includes a diffractive optical element and an aspheric surface. A length on an optical axis from a lens surface furthest on the object side of the first lens sub-unit to an image plane, an air space between the first lens sub-unit and the second lens sub-unit, a focal length of the first lens sub-unit, a focal length of the second lens sub-unit, a focal length of the diffractive optical element by only a diffractive component, a focal length and an F-number of the entire photographic optical system are appropriately set to satisfy predetermined conditions for optimal focusing.Type: GrantFiled: May 23, 2011Date of Patent: February 18, 2014Assignee: Canon Kabushiki KaishaInventor: Kaoru Eguchi
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Patent number: 8537475Abstract: The present invention relates to composite optical elements, and particularly to a composite optical element including a first optical component and a second optical component coupled to the first optical component. The present invention is advantageous in enhancing optical properties. A composite optical element (1) includes a first optical component (10) and a second optical component (20). The first optical component (10) is made of first glass and has a lens surface (12). The second optical component (20) is made of a material different from the first glass, is coupled to the first optical component (10) at a lens surface (22), and has a lens surface (22) at a side opposite to the first coupling surface (21). The lens surface (12) partially has a first uneven region (12a). The lens surface (22) partially has a second uneven region (22a).Type: GrantFiled: June 6, 2007Date of Patent: September 17, 2013Assignee: Panasonic CorporationInventors: Jun Murata, Toshiaki Takano
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Publication number: 20130141800Abstract: A Fresnel lens comprises a first surface, and a second surface being the reverse side surface of the first surface and having a plurality of lens surfaces. Each lens surface is configured from a part of a side surface of an elliptical cone, which has an apex located on the second surface side and a bottom surface located on the first surface side. Here, in the Fresnel lens, any normal line intersecting with the lens surface configured from the part of the side surface of the elliptical cone among normal lines of respective points on the first surface is non-parallel to a central axis of the elliptical cone corresponding to the lens surface with which the any normal line intersects.Type: ApplicationFiled: January 25, 2013Publication date: June 6, 2013Applicant: PANASONIC CORPORATIONInventor: Panasonic Corporation
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Patent number: 8427762Abstract: An optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, an aperture stop, and a rear lens group. In the optical system, the rear lens group includes a second lens unit configured to move during focusing. The first lens unit includes n positive lenses (n is an integer greater than 1) and one or more negative lenses. With an order of an optical member counted from the object side towards the image side being indicated by i (i is an integer equal to or greater than 1), a refractive index and an Abbe number of a material of an i-th positive lens of the first lens unit with respect to d-line light (Ndi, ?di), maximum and minimum values of the Abbe number ?di (max(?di), min(?di)), a minimum value of the refractive index Ndi (min(Ndi)), a focal length of the first lens unit (fp), and a focal length of the entire optical system (f) are appropriately set.Type: GrantFiled: May 18, 2011Date of Patent: April 23, 2013Assignee: Canon Kabushiki KaishaInventor: Satoshi Maetaki
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Patent number: 8351125Abstract: A directional light distributing optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first axis, and an included angle formed between the first axis and an optic axis is greater than ?15° and smaller than 15°. Thus, the light after passing the directional light distributing optical element forms a one-dimensional directional light.Type: GrantFiled: February 2, 2011Date of Patent: January 8, 2013Assignee: Industrial Technology Research InstituteInventors: Hui-Hsiung Lin, Wen-Hsun Yang, Chin-Ju Hsu, Yu-Nan Pao
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Patent number: 8248712Abstract: A light ray concentration device includes a concentrating lens and a base for holding the concentrating lens. The concentrating lens includes a planar surface defining a number of first Fresnel zones and a convex surface facing away from the planar surface and defining a number of second Fresnel zones. The first and second Fresnel zones are coaxial with each other.Type: GrantFiled: December 3, 2010Date of Patent: August 21, 2012Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Tai-Cherng Yu, Yung-Lun Huang, I-Thun Lin
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Patent number: 8210677Abstract: A disk enabling modification of the power of an optical component consists of a Fresnel lens. The disk is initially formed with a general rounded shape which corresponds to the shape of the optical component. In this way, the disk does not lose its shape or does not lose it very much when it is applied against the component. It does not cause image distortion or optical aberration when an object is observed through the component provided with the disk. Such a disk is particularly adapted to obtain correction of ametropia or to a solar mask initially lacking optical power.Type: GrantFiled: May 29, 2007Date of Patent: July 3, 2012Assignee: Essilor International (Compagnie Generale d'Optique)Inventors: Bruno Fermigier, Francois Guilhaumon, Matthieu Koscher, Sylvie Maze
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Patent number: 8186838Abstract: The invention discloses an optical lens for a light-emitting device. The optical lens includes a translucent body which has a concave inner surface to which light is incident. The inner surface includes a first region and a second region opposite to the first region. The first region and the second region are both substantially straight planes and extend inclinedly from the edge of the inner surface to the center of the inner surface respectively, so as to connect with each other. Thereby, the optical lens of the invention is capable of contributing to an elliptic light field.Type: GrantFiled: October 5, 2009Date of Patent: May 29, 2012Assignee: Edison Opto CorporationInventor: Pin-Chun Chen
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Patent number: 8149510Abstract: A diffractive optical element according to the present invention includes: a lens body 11 with a blazed grating 13 on an aspheric surface 11a thereof; and an optical adjustment layer 15 that covers the diffraction grating 13. The lens body 11 is made of a first material 14a and the optical adjustment layer 15 is made of a second material 14b that has a higher refractive index than the first material 14a. The diffraction grating 13 has a number of ring zones that are arranged concentrically around an optical axis, where the height of each ring zone with respect to the aspheric surface 11a of the lens body 11 is represented by an increasing function of a distance r from the optical axis. The increasing function is represented by a phase polynomial that uses the distance r as a variable and that has a magnitude of 3/4? to 7/4? when r=0.Type: GrantFiled: January 28, 2009Date of Patent: April 3, 2012Assignee: Panasonic CorporationInventors: Tsuguhiro Korenaga, Seiji Nishiwaki
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Patent number: 8111470Abstract: The present invention relates to a composite lens and a method for manufacturing the same, particularly to a composite lens in which a second lens component is coupled to a first lens component at part of a first surface, and intends to improve optical characteristics. A composite lens (1) has a first lens component (10) and a second lens component (20). The first lens component (10) has a first surface including a first lens surface (13), a peripheral surface (15a) surrounding the first lens surface (13) and a ring surface (17a) included in the peripheral surface (15a) and surrounding the first lens surface (13), and a second lens surface (12) on the opposite side of the first lens surface (13). The second lens component (20) is coupled to the first lens component (10) at part of the first surface surrounded by the ring surface (17a).Type: GrantFiled: June 6, 2007Date of Patent: February 7, 2012Assignee: Panasonic CorporationInventors: Yoshiyuki Shimizu, Toshiaki Takano, Jun Murata, Kenji Inoue
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Publication number: 20120019935Abstract: A light ray concentration device includes a concentrating lens and a base for holding the concentrating lens. The concentrating lens includes a planar surface defining a number of first Fresnel zones and a convex surface facing away from the planar surface and defining a number of second Fresnel zones. The first and second Fresnel zones are coaxial with each other.Type: ApplicationFiled: December 3, 2010Publication date: January 26, 2012Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: TAI-CHERNG YU, YUNG-LUN HUANG, I-THUN LIN
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Patent number: 8068288Abstract: A secondary illumination optic, principally directed toward managing light from light emitting diode illumination sources having a primary optical element, is provided comprising a lens combination arranged along the optical axis, a central convex lens portion being centrally positioned on the optical axis, and a surrounding total internal reflection lens portion, with the central optic having a first and incident surface and a second and exiting surface, both comprising refractive faceted optical lens elements, and the total internal reflection optic lens portion having a cylinder shaped aspheric first and incident surface, a second and internal total reflection surface, and a third and exiting surface comprising refractive faceted optic lens elements, wherein, being constructed of resin having optical characteristic, the central and total internal reflection lens portions are molded as an integrated assembly from an optical resin providing a stepped tulip type lens, thinner and higher yielding than prior arType: GrantFiled: September 15, 2009Date of Patent: November 29, 2011Assignee: Triformix, Inc.Inventor: David S Pitou
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Patent number: 8040617Abstract: A 3-dimensional image display device having wide viewing angles using Fresnel lenses is disclosed. According to an embodiment of the invention, the 3-dimensional image display device includes an image source providing part for providing an image source, a first Fresnel lens refracting and transmitting the image source that is incident from the image source providing part, and a second Fresnel lens for generating a 3-dimensional image by refracting and transmitting the image source transmitted from the first Fresnel lens. At least one of the first Fresnel lens and the second Fresnel lens is a curved type Fresnel lens surface. The present invention can maximize the display area for a 3-dimensional image and realize the 3-dimensional image having wide viewing angles without distortion on the left and right boundaries.Type: GrantFiled: August 29, 2008Date of Patent: October 18, 2011Assignee: 3Dis Co., Ltd.Inventor: Sun-Joo Jang
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Patent number: 8002482Abstract: A transparent screen is constructed in such a way that a plurality of Fresnel prisms 12d each of which is smaller than a plurality of Fresnel prisms 12a and has a shape approximately similar to that of each of the plurality of Fresnel prisms 12a are arranged in a sawtooth shape on a non-light incidence surface portion of a Fresnel lens 12 on a light incidence side to which any image light PB applied from a projector 1 is not applied directly because blocked by a Fresnel prism 12a placed frontwardly.Type: GrantFiled: April 7, 2009Date of Patent: August 23, 2011Assignee: Mitsubishi Electric CorporationInventors: Takao Endo, Yuzo Nakano, Hayato Takeuchi
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Patent number: 8000018Abstract: One example of a solar voltaic concentrator has a primary Fresnel lens with multiple panels, each of which forms a Köhler integrator with a respective panel of a lenticular secondary lens. The resulting plurality of integrators all concentrate sunlight onto a common photovoltaic cell. Luminaires using a similar geometry are also described.Type: GrantFiled: November 18, 2009Date of Patent: August 16, 2011Assignee: Light Prescriptions Innovators, LLCInventors: Pablo Benítez, Juan Carlos Miñano, Pablo Zamora, Maikel Hernandez, Aleksandra Cvetkovic
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Patent number: 7990613Abstract: The present disclosure relates to a depth-enhancing screen for producing a simulated 3D image. The screen comprises a multi-curved Fresnel lens which when viewed in cross-section along the or each longest line linking two points on the edge of the lens, has a curved cross-section with an apex in the central region of the lens, and wherein each end of the curve flattens before it reaches the edge of the lens.Type: GrantFiled: October 9, 2008Date of Patent: August 2, 2011Assignee: RealView Innovations LimitedInventors: Catherine Ansbro, Eamonn Ansbro, John Braithwaite
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Patent number: 7976201Abstract: A two-side illuminating lens body mainly projecting light from a light emitting device to two relative outer directions includes a base with a receiving slot having a downwards opening for receiving a lighting device. A concave arc for receiving the light emitting portion of the lighting device is formed above the receiving slot as a light incident side. On a top surface of the base, two symmetrical non-spherical protrusions are jointly arranged beside a center light axis. A concave curved surface is formed to a border of the two non-spherical protrusions. Two symmetrical awl laterals are formed on relative outer edges of the non-spherical protrusions. Through three different refracting types of the concave curved surface, non-spherical protrusions, and awl laterals, rays from the light emitting device will be gradually diffused away from the center light axis so that a double-side skew light distribution of illumination like a butterfly is projected.Type: GrantFiled: November 10, 2008Date of Patent: July 12, 2011Inventor: Yen-Wei Ho
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Patent number: 7920339Abstract: Methods and apparatus to correct a curved Petzval focusing surface to a plane using a convex lens, a concave lens, and a space arranged between the curved side of the convex lens and the curved side of the concave lens. The method and apparatus may also include a Fresnel lens arranged between the concave lens and a pixel array.Type: GrantFiled: July 2, 2008Date of Patent: April 5, 2011Assignee: Aptina Imaging CorporationInventors: Jacques Duparre, Steven D. Oliver
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Publication number: 20110048411Abstract: A point focus thin film Fresnel lens (15; 25) has an inner, substantially flat region (8; 22), and an outer region (9; 23), the outer region projecting outwardly from the inner region and at a substantial angle away from the plane of the inner region. In one embodiment the lens is in the form of a truncated cone (15) with a circular inner region as its apex, hi another embodiment the lens is in the form of a dome (25) and the outer region is formed by joining together segments (23) extending radially from a circular central region (22).Type: ApplicationFiled: February 23, 2009Publication date: March 3, 2011Applicant: MICROSHARP CORPORATION LIMITEDInventor: Nicholas Simon Walker
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Patent number: 7880152Abstract: The invention relates to a device and a method for producing resist profiled elements. According to the invention, an electron beam lithography system is used to produce an electron beam, the axis of the beam being essentially perpendicular to a resist layer in which the resist profiled element is to be produced. The electron beam can be adjusted in terms of the electron surface dose in such a way that a non-orthogonal resist profiled element can be produced as a result of the irradiation by the electron beam.Type: GrantFiled: March 30, 2005Date of Patent: February 1, 2011Assignees: Giesecke & Devrient GmbH, Vistec Electron Beam GmbHInventors: Wittich Kaule, Rainer Plontke, Ines Stolberg, Andreas Schubert, Marius Dichtl