| 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 |
| 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 |
| 6246527 |
Image display apparatus |
June 12, 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 |
| 6222688 |
Decentered optical system |
April 24, 2001 |
| A fast and compact decentered optical system corrected for aberrations due to three-dimensional decentration by three-dimensionally disposing a rotationally asymmetric surface having no plane of symmetry. The decentered optical system includes at least one optical surface with a rota |
| 6222676 |
Image display apparatus |
April 24, 2001 |
| The invention relates to a slimmed-down yet high-performance image display device which comprises a decentered prism capable of internal reflection and a reflection type image display device such as a reflection-type LCD or DMD and can present bright images to an observer, and provides a |
| 6208468 |
Image-forming optical system and apparatus using the same |
March 27, 2001 |
| A distortion-free and compact image-forming optical system with a minimal number of optical components which provides a wide image area and which is favorably corrected for ray aberrations and arranged in a compact structure by folding an optical path. A pentagonal prism member (5) has a |
| 6201648 |
Optical system |
March 13, 2001 |
| A compact optical system for microscope, endscope and binoculars capable of providing a clear image of minimal distortion even at a wide field angle. The optical system is a decentered optical system. Curved surfaces constituting the optical system include at least one rotationally a |
