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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Togino; Takayoshi
Address:
Koganei, JP
No. of patents:
99
Patents:


1 2










Patent Number Title Of Patent Date Issued
RE37292 Optical system and optical apparatus July 24, 2001
An image display apparatus which enables observation of a clear image at a wide field angle with substantially no reduction in the brightness of the observation image, and which is extremely small in size and light in weight. The image display apparatus has an image display device (7) an
RE37169 Ocular optics system having at least four reflections occurring between curved surfaces May 8, 2001
The invention relates to an ocular optics system which forms no intermediate image, is reduced in terms of size and weight with well-corrected aberrations, and is best suited for use on face- or head-mounted image display devices, and provides an ocular optics system 7 comprising thr
8254038 Optical element, optical system having the same and endoscope using the same August 28, 2012
An optical element is made of a transparent medium that is rotationally symmetric relative to the central axis with a refractive index greater than 1. The transparent medium has a first transmissive surface at the outermost periphery relative to the central axis, a first reflective s
8194332 Fresnel optical element and optical system using the same June 5, 2012
A Fresnel optical element has a plurality of slopes that refract or reflect light, and the variation of the slope angle between adjacent slopes is constant.
7929219 Optical element, optical system and endoscope using the same April 19, 2011
A flux of light entering a transparent medium proceeds along a side view optical path by way of a first transmissive surface so as to be reflected to the side opposite to an image plane by a first reflective surface and then to the image plane side by a second reflective surface to form
7800826 Optical system September 21, 2010
The invention relates to an optical system with well corrected aberrations, which is adapted to take images from a full panoramic scene on a cylindrical, conical or other three-dimensional image surface or project such a three-dimensional display surface onto a full field of view in
7748851 Optical system July 6, 2010
The invention relates to an optical system adapted to project a cylindrical, spherical, conical or other three-dimensional display surface onto every direction in the distance or receive images from every direction at such a three-dimensional imaging surface. The optical system is ad
7616389 Optical system November 10, 2009
The invention relates to an optical system adapted to take or project high-definition images with well corrected aberrations for the purpose of taking images from a 360.degree. panoramic scene on a cylindrical, conical or other three-dimensional surface or project such a three-dimens
7562981 Biological information acquisition and presentation kit, and pupillary diameter measurement kit July 21, 2009
The invention relates to a biological information acquisition and presentation kit that enables a general able-bodied person or subject to measure the subject's own biological or emotional index in a ready way. The kit 1 is characterized by comprising a positioning means capable of b
7554598 Imaging system, and identity authentication system incorporating the same June 30, 2009
The invention relates to an imaging system 50 wherein, without recourse to any large-size pupil relay optical system, a plurality of minute imaging optical systems are arranged in rows and columns to pick up pixel images of a divided fundus through separate imaging optical systems, so th
7542218 Optical system June 2, 2009
A curved surface image-conversion optical system is configured to take an image of a hemispherically curved object or project it as a curved surface image, which optical system includes a front unit formed of a transparent medium rotationally symmetric about a center axis and having
7524071 Image-forming optical system April 28, 2009
A high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical system has a single prism. When image-side three surfaces of the prism are defined as a
7403343 Panoramic attachment optical system, and panoramic optical system July 22, 2008
The invention relates to a panoramic attachment optical system and a panoramic optical system for taking an image having a full 360.degree.-direction angle of view or projecting an image at a full 360.degree.-direction angle of view. These optical systems are reduced in size and flar
7382410 Portable telephone with phototaking optical system, two dimensional display and magnifying optic June 3, 2008
The invention relates to a compact electronic camera which enables an electronic image to be displayed on a two-dimensional display element while it is phototaken or after it has been phototaken, so that the image can be magnified and displayed by a compact magnifying optical system
7362517 Rotationally asymmetric optical system April 22, 2008
The invention relates to a rotationally asymmetric optical system which includes at least one reflecting surface rotationally symmetric about a center axis, is rotationally symmetric about the center axis, and is adapted to form a full 360.degree.-direction image on an image plane or
7317565 Projection viewing system January 8, 2008
A projection viewing system of simplified construction and high illumination efficiency, which enables at least two images varying with viewing directions to be simultaneously displayed in a viewable fashion. The system includes at least two display devices 1.sub.1 and 1.sub.2, at le
7296901 Projection display November 20, 2007
A projection display comprises a display device, a projection optical system that has an aperture and is adapted to magnify and project an image appearing on the display device and a display panel including an image-formation device located near an image projected through the project
7245443 Panoramic attachment optical system, and panoramic optical system July 17, 2007
The invention relates to a panoramic attachment optical system and a panoramic optical system for taking an image having a full 360.degree.-direction angle of view or projecting an image at a full 360.degree.-direction angle of view. These optical systems are reduced in size and flar
7236278 Projection optical apparatus June 26, 2007
A projection optical apparatus is provided that is fast and of satisfactory illumination efficiency albeit being of simple construction and compact size including at least three projection optical systems for magnifying and projecting an image appearing on a display device, and furth
7167307 Projection screen, and projection type display system January 23, 2007
The invention relates to a projection screen and a projection type display device, wherein projection light projected through a single projector is intensively diffused into at least two areas of view, each having a relatively narrow extent, so that the same image can be simultaneously
7009775 Eyepiece optical system, and display device using the eyepiece optical system March 7, 2006
The invention relates to a display system wherein a Fresnel lens that forms an eyepiece optical system is curved to correct for decentration aberration, whereby a display screen can be wholly observed even in a decentered state. In the display system, an object image is projected via
6963224 Reflexive optical screen, and viewing system incorporating the same November 8, 2005
The invention relates to a reflexive optical screen that can show bright images with efficiency, and a viewing system that incorporates the same, and provides a reflexive optical screen 10 comprising a plurality of zonal V-grooved reflecting surfaces substantially concentrically located
6926409 Projection viewing system August 9, 2005
The invention relates to a projection viewing system of simplified construction and high illumination efficiency, which enables at least two of images varying with viewing directions to be simultaneously displayed in a viewable fashion. The system comprises display devices 1L and 1R for
6900951 Display optical system May 31, 2005
The invention relates to a small-format display optical system using a reflection type image device as an image display device and capable of displaying bright, high-resolution images. The display optical system comprises a reflection type display device 3 for displaying an image, an
6850370 Image-forming optical system February 1, 2005
The present invention relates to a high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. A prism member 10 has a first entrance surface 11, first to fourth reflecting surfac
6833965 Optical element using organic-inorganic composite material December 21, 2004
A lightweight and homogeneous optical element exhibiting favorably weak birefringence and hygroscopicity as well as superior productivity and producing minimal chromatic aberrations is formed by using an organic-inorganic composite material having both the properties of a glass mater
6829113 Image-forming optical system December 7, 2004
The present invention relates to a high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. A prism member 10 has a first entrance surface 11, first to fourth reflecting surfac
6798583 Projection optical apparatus September 28, 2004
The invention provides a small-sized projection optical apparatus which uses a decentered prism as a projection optical system and in which some contrivances are provided to how to introduce illumination light into a reflection type display device. The projection optical apparatus compri
6795042 Image display apparatus September 21, 2004
The present invention relates to an image display apparatus, e.g. a head-mounted image display apparatus, in which an image from a single image display device is led to two eyes without using a half-mirror, thereby allowing observation of a bright image. The image display apparatus h
6788343 Image-forming optical system September 7, 2004
A high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical system has a single prism. When image-side three surfaces of the prism are defined as a
6760164 Optical system July 6, 2004
The invention provides an optical system that enables focal length, image-formation position, etc. to be controlled in simple construction by bending the optical system to shift a light beam passing through it and so making use of an arbitrary portion of the optical system. In an ima
6757107 Optical path splitting element and image display apparatus using the same June 29, 2004
An optical path splitting element for splitting a light beam from a single object into at least two optical paths is made compact in size by using a three-dimensional optical system and given a power to reduce the number of components thereof. An image display apparatus uses the optical
6646812 De-centered optical system and optical apparatus equipped therewith November 11, 2003
A de-centered optical system includes a first optical element having at least three surfaces surrounding a portion having a refractive index of more than 1, and a second optical element whose surface further from the first optical element is a convex surface and has a positive power and
6633337 Electronic camera October 14, 2003
The invention relates to a compact electronic camera which enables an electronic image to be displayed on a two-dimensional display element while it is phototaken or after it has been phototaken, so that the image can be magnified and displayed by a compact magnifying optical system
6603608 Variable focal length optical element and optical system using the same August 5, 2003
An optical system capable of focal length adjustment and so forth with a simple arrangement in which a desired portion of an optical element is selectively utilized by moving an aperture in a direction approximately perpendicular to the optical axis. The optical system has at least two
6590724 Color image display system and color image pickup system that use decentered optical system July 8, 2003
A color image display system and a color image pickup system adapted to electronically correct the color shift of color separation images caused by a decentered optical system used to display or capture a color image. The color image display system has an image display apparatus includin
6545810 Image pickup optical system and image pickup apparatus using the same April 8, 2003
A compact image pickup optical system capable of providing a clear image of minimal distortion even at a wide field angle, and an image pickup apparatus using such an image pickup optical system. The image pickup optical system forms an object image on the surface of an image pickup
6510006 Image-forming optical system January 21, 2003
A high-performance image-forming optical system made compact and thin by folding an optical path using reflecting surfaces arranged to minimize the number of reflections. The image-forming optical system has a single prism. When image-side three surfaces of the prism are defined as a
6501602 Image display apparatus having three-dimensionally decentered optical path December 31, 2002
An image display apparatus allows an image from a single image display device to be led to two eyes without using a half-mirror, thereby allowing observation of a bright image, and facilitates correction of various aberrations. A viewing optical system includes a left ocular part, a righ
6466383 Image pickup optical system October 15, 2002
A compact image pickup optical system satisfactorily corrected for chromatic aberration as well as decentration aberrations and capable of providing a clear image with minimal distortion even at a wide field angle. The image pickup optical system includes an image pickup optical elem
6464361 Image display apparatus having three-dimensionally decentered optical path October 15, 2002
The present invention relates to an image display apparatus in which an image from a single image display device is led to two eyes without using a half-mirror, thereby allowing observation of a bright image and facilitating correction of various aberrations. A viewing optical system
6445507 Viewing optical system and image display apparatus using the same September 3, 2002
A compact, bright and high-performance viewing optical system capable of color display has a reflection type image display device, an ocular optical system and an illuminating device formed from a plurality of juxtaposed illuminating light sources of different colors. An illuminating
6421184 Optical path splitting element and image display apparatus using the same July 16, 2002
An optical path splitting element for splitting a light beam from a single object into two optical paths (left and right) is made compact in size and given a power to reduce the number of components thereof. An image display apparatus uses the optical path splitting element. The left and
6396639 Viewing optical system and image display apparatus using the same May 28, 2002
A compact, bright and high-performance viewing optical system and an image display apparatus using the same. The viewing optical system uses an ocular optical system, which is formed from a decentered prism, and a reflection type image display device. The image display device has a light
6388827 Image display apparatus having three-dimensionally decentered optical path May 14, 2002
An image display apparatus having a three-dimensionally decentered optical path to attain a reduction in overall size of the apparatus and to place constituent members effectively in a dead space, thereby permitting the apparatus to be designed in a variety of ways. The apparatus include
6333820 Image display apparatus December 25, 2001
A compact, lightweight and bright image display apparatus which uses a non-telecentric optical system, or a decentered optical system and a reflection-type image display device, such as a reflection-type LCD, to have high optical performance. The image display apparatus comprises an
6313950 Image display apparatus November 6, 2001
An optical system for an ocular optical system or a projection optical system, in which a plurality of illuminating light sources of different colors can be placed in a side-by-side relation to each other, and which makes it possible to reduce the overall size and weight of an apparatus
6282008 Scanning optical system August 28, 2001
A compact scanning optical system formed by combining a deflecting mirror and a reflecting optical system so that the central beam of the incident light beam and the central beam of the scanning light beam are approximately on a straight line or approximately parallel to each other.
6278556 Prism optical system August 21, 2001
The invention provides a prism optical system which has an image-forming action and provides a clear yet substantially undistorted image at a wide field angle. In a prism optical system 5 comprising an aperture 1 and having an action on erecting an image formed by an objective, there are
6252728 Image display apparatus June 26, 2001
The invention relates to a slimmed-down, well weight-balanced image display apparatus which, while a wide angle of view is presented, ensures high resolving power and a large pupil diameter, and comprises a viewing optical system for viewing an image displayed on an image display device
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