Patents Assigned to Konica Minolta Opto, Inc.
  • Patent number: 8542310
    Abstract: Provided is an imaging lens, in which a space holding portion is formed outside the effective aperture of one or both of junction type compound lenses facing each other in order to hold the space between the junction type compound lenses. A mating face formed on the space holding portion which is made of the same material as that of a lens portion is brought in direct contact with a mating face provided on the other among the junction type compound lenses facing each other at the position facing the mating face of the space holding portion, outside the effective aperture of the other junction type compound lens. Alternatively, mating faces which are formed on confronting surfaces of the space holding portions formed on the facing junction type compound lenses are brought in direct contact with each other.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 24, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hiroshi Oshitani, Yasunari Fukuta
  • Publication number: 20130235552
    Abstract: An anisotropic dye layer containing a coordination polymer is disclosed. The a polarization control film containing an oriented dichroic dye in which light absorption spectrum of a molecule is reversibly changed by charge passing are disclosed.
    Type: Application
    Filed: April 26, 2013
    Publication date: September 12, 2013
    Applicant: KONICA MINOLTA OPTO, INC.
    Inventor: Yukihito NAKAZAWA
  • Patent number: 8531578
    Abstract: Provided are a wide angle optical system having better optical performance, low in cost, and compact in size, an imaging lens device having the wide angle optical system, a monitor camera, and a digital apparatus. The wide angle optical system (1) has, in order from the object side to the image side, a first lens (11) having a negative optical power, a second lens (12) having a negative optical power, a third lens (13) having a positive optical power, an aperture (15), and a fourth lens (14) having a positive optical power. The wide angle optical system satisfies the conditional expression of 3<f34/f<10, where f34 is the composite focal length of the third and fourth lenses (13, 14) and f is the focal length of the entire system.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: September 10, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Keiji Matsusaka, Toru Nakatani
  • Publication number: 20130229567
    Abstract: An image pickup lens includes: a first lens with a positive power, including a convex surface facing the object side; an aperture stop; a second lens with a negative power, including a concave surface facing the image side; a third lens with a positive or negative power; a fourth lens with a positive power, including a convex surface facing the image side; and a fifth lens with a negative power, including a concave surface facing the image side. The surface of the fifth lens facing the image side is an aspheric surface and includes an inflection point. The image pickup lens satisfies the predetermined condition relating to a focal length of the first lens.
    Type: Application
    Filed: April 17, 2013
    Publication date: September 5, 2013
    Applicant: Konica Minolta Opto, Inc.
    Inventor: Eigo SANO
  • Patent number: 8520310
    Abstract: Light outputted from a laser light source (12) of an image generating section (11) is two-dimensionally deflected and permitted to perform scanning by means of a reflecting surface (13a) of a deflecting device (13), diffused by means of a diffusion unit (14), and then diffracted and reflected by an HOE (23) of an eyepiece optical system (4), and guided to an optical pupil (E). Deterioration of qualities of an observing image can be eliminated by setting the optical pupil (E) and the reflecting surface (13a) of the deflecting device (13) to have an optically conjugated positional relationship.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: August 27, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Yoshie Shimizu
  • Patent number: 8520124
    Abstract: The image pickup lens is composed of, in order from the object side, an aperture stop; a first lens with positive refractive power, including a convex surface facing the object side; a second lens with negative refractive power, including a concave surface facing an image side; a third lens with positive refractive power, including a convex surface facing the image side; a fourth lens with positive refractive power, having a meniscus shape including a convex surface facing the image side; and a fifth lens with negative refractive power, including a concave surface facing the image side. The image pickup lens satisfies conditional expressions relating to curvature radiuses of the object-side surface and the image-side surface of the fourth lens, a distance on an optical axis from the aperture stop to a focal point at the image side, and a focal length of the total system of the image pickup lens.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: August 27, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Yuichi Ozaki
  • Patent number: 8518565
    Abstract: A glass substrate for information recording medium, said glass substrate being composed of an aluminosilicate glass containing 60-75% by mass of SiO2, 5-18% by mass of Al2O3, 3-10% by mass of Li2O, 3-15% by mass of Na2O and 0.5-8% by mass of ZrO2 relative to the entire glass components. The glass substrate for information recording medium contains neither As (arsenic) nor Sb (antimony), while containing at least one polyvalent element selected from the group consisting of V (vanadium), Mn (manganese), Ni (nickel), Nb (niobium), Mo (molybdenum), Sn (tin), Ce (cerium), Ta (tantalum) and Bi (bismuth). The molar ratio of the total amount of the polyvalent elements to the amount of Al2O3 is within the range of 0.02-0.20.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: August 27, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Hideki Kawai
  • Patent number: 8505338
    Abstract: In one aspect, there is provided a process for manufacturing a lower mold for receiving a falling molten glass droplet, in which without narrowing the option for material for a lower mold, any occurrence of air retention can be favorably prevented and a lower mold excelling in durability can be obtained. The process comprises the film forming step of forming a coating layer on a base material and the surface roughening step of roughening the surface of the coating layer. Preferably, the coating layer contains at least one element selected from among chromium, aluminum and titanium.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: August 13, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shunichi Hayamizu, Naoyuki Fukumoto
  • Patent number: 8502907
    Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: August 6, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Eigo Sano, Yuichi Ozaki
  • Patent number: 8502906
    Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: August 6, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Eigo Sano, Yuichi Ozaki
  • Patent number: 8498047
    Abstract: Disclosed is a film mirror used for reflection of sunlight, which includes, in the following order from the side where sunlight is entered, an ultraviolet ray reflection film which reflects ultraviolet ray and transmits visible and infrared light, a plastic film layer, a metal reflection-layer which reflects visible and infrared light, and a protective layer.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 30, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hideyuki Ishihara, Nobuyoshi Mori
  • Patent number: 8493672
    Abstract: An imaging lens (LN) of an imaging device (ID) is composed of an aperture stop (ST) and a lens unit (LU) having positive power. Even when the object side surface of the lens unit (LU) has a shape convexed to the side of the object, and a lens whose image side surface is concaved to the image side is used, excellent aberration performance with a short optical total length, a small sensor incidence angle and a small distortion are achieved at low cost.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: July 23, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Yusuke Hirao, Keiji Matsusaka
  • Patent number: 8487510
    Abstract: Provided is a driving device having an electromechanical transducer, a driving member, a moving member and a driving circuit. The driving circuit outputs a driving voltage at a frequency lower than that where the driving speed of the moving member is at maximum, and changes the drive frequency of the driving voltage so that the drive frequency has a negative correlative relationship with the ambient temperature. The change rate of the drive frequency to a change of the ambient temperature in the negative correlative relationship is larger than a change rate of a frequency where the driving speed of the moving member is at maximum to an increase of the ambient temperature, and the change rate permits the driving speed of the moving member to increase when the ambient temperature increases.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: July 16, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Ryuichi Yoshida, Takayuki Hoshino, Tomoyuki Yuasa
  • Publication number: 20130176469
    Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.
    Type: Application
    Filed: December 21, 2012
    Publication date: July 11, 2013
    Applicant: Konica Minolta Opto, Inc.
    Inventor: Konica Minolta Opto, Inc.
  • Publication number: 20130169852
    Abstract: Provided is a small-sized five-element image pickup lens which ensures a sufficient lens speed of about F2 and exhibits various aberrations being excellently corrected. The image pickup lens is composed of, in order from the object side, a first lens with a positive refractive power, including a convex surface facing the object side; a second lens with a negative refractive power, including a concave surface facing the image side; a third lens with a positive or negative refractive power; a fourth lens with a positive refractive power, including a convex surface facing the image side; and a fifth lens with a negative refractive power, including a concave surface facing the image side. The image-side surface of the fifth lens has an aspheric shape, and includes an inflection point at a position excluding an intersection point with the optical axis.
    Type: Application
    Filed: December 21, 2012
    Publication date: July 4, 2013
    Applicant: Konica Minolta Opto, Inc.
    Inventor: Konica Minolta Opto, Inc.
  • Patent number: 8477437
    Abstract: A lens unit LU in which a lens portion L is formed at least on either a light-receiving surface or a light-emitting surface of a lens holding plate P, wherein a difference in coefficients of linear expansion of the lens holding plate P and the lens portion L is used to suppress mis-focusing by causing changes in a paraxial image point position of the entire lens system due to changes in the surface shape of the lens portion L which accompany temperature changes, and changes in the paraxial image point position of the entire lens system due to changes in the refraction index to cancel each other out. Furthermore, deterioration of performance of the entire lens system caused by rising temperature is suppressed by satisfying a predetermined conditional expression.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: July 2, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Yusuke Hirao, Keiji Matsusaka
  • Patent number: 8477587
    Abstract: There are provided an optical pickup device which can satisfactorily record and/or reproduce information on different kinds of optical information recording medium in spite of compactness, and an objective optical element used for the optical pickup device. The optical functional surface of the objective optical element includes at least two areas of a central area including an optical axis and a peripheral area surrounding the central area. An optical path difference providing structure in the central area is a structure obtained by overlapping a first central basic structure and a second central basic structure which are in a shape of ring-shaped zones divided by step differences, with each other. An optical path difference providing structure in the peripheral area is a structure obtained by overlapping a first peripheral basic structure and a second peripheral basic structure which are in a shape of ring-shaped zones divided by step differences, with each other.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: July 2, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Kentarou Nakamura, Tohru Kimura
  • Patent number: 8477413
    Abstract: An optical element for reflecting solar light has excellent weather resistance, and furthermore, a high reflectance in a wide band. When solar light enters an optical element (OE), light (L1) in a short wavelength band among the solar light is reflected by a dielectric multilayer film (DF). Other light (L2) in longer wavelength bands are passed through the dielectric multilayer film (DF), then a base material (SS), and reflected by a metal deposition film (MV) to pass through the base material (SS) and the dielectric multilayer film (DF). Thus, high reflectance in a wide band is ensured.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: July 2, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Nobuyoshi Mori, Kazuo Ishida, Takuji Hatano, Setsuo Tokuhiro
  • Patent number: 8476569
    Abstract: An object is to provide a image projection device which has a small size but can project an image having a high image quality. To achieve the object, in an image projection device, a reflection part which reflects a light flux from a light source is, while being rotated around a first axis by non-resonance driving, rotated by resonance driving around a second axis which is substantially perpendicular to the first axis, and thereby the light flux is deflected in a two-dimensional direction. By controlling the rotation of the reflection part, a correction for suppressing an image distortion along one scanning direction on a projection surface, and a correction for keeping substantially constant a scanning speed of the light flux along the other scanning direction on the projection surface, are performed.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 2, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Kenji Konno, Kenji Mizumoto
  • Patent number: 8470448
    Abstract: An acryl resin-containing film which is transparent and highly heat-resistant and has been significantly improved in brittleness is disclosed, satisfying the following equations (1) to (4), exhibiting a tension softening point of 105 to 145° C. and a photoelastic coefficient of ?5.0×10?8 to 8.0×10?8 cm2/N, while causing no ductile fracture. There is also disclosed a liquid crystal display which has achieved an improved yield in works of stamping a polarizing plate or sticking the plate to a panel and reduced color shift occurred depending on viewing angle. |Ro(589)|?10 nm??Equation (1) |Rth(589)|?20 nm??Equation (2) |Ro(480)?Ro(630)|?5 nm??Equation (3) |Rth(480)?Rth(630)|?10 nm??Equation (4) Numerical values of 589, 480 and 630 in parentheses represent the wavelength (nm) of a light used to measure an individual birefringence.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: June 25, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Takebe, Masataka Takimoto, Nobuo Kubo