| Patent Number |
Title Of Patent |
Date Issued |
| RE37579 |
Image display apparatus comprising an internally reflecting ocular optical system |
March 12, 2002 |
| 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 fight in weight and hence unlikely to cause the observer to be fatigued. The im |
| 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 |
| RE37175 |
Image display apparatus |
May 15, 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 image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The apparatus incl |
| 7151596 |
Deflection angle detecting device |
December 19, 2006 |
| A deflection angle detecting device includes a light source, a path switching plane switching the optical path of part of light radiated from the light source, a detecting reflection surface placed on the optical path switched by the path switching plane and provided to the light-def |
| 7116412 |
Angle detection optical system, angle detection apparatus, optical signal switch system and info |
October 3, 2006 |
| A reflective surface for detection is provided in an object being detected. Laser light condensed by a condensing lens is emitted from a laser light source and angle detection is performed by performing angle detection of the reflected light. The reflected light is irradiated onto a |
| 6760169 |
Prism optical element, image observation apparatus and image display apparatus |
July 6, 2004 |
| An extremely compact prism optical element, image observation apparatus and image display apparatus which are capable of providing an observation image that is clear and has minimal aberration and minimal distortion even at a wide field angle. Light rays emitted from an image display dev |
| 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 |
| 6317267 |
Head or face mounted image display apparatus |
November 13, 2001 |
| The present invention is an optical apparatus, e.g. 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 and hence |
| 6195207 |
Head or face mounted image display apparatus |
February 27, 2001 |
| The present invention is an optical apparatus, e.g. 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 and hence |
| 6130784 |
Resolution enhancing image display apparatus |
October 10, 2000 |
| An image display apparatus that presents an observer an image of higher resolution than the original resolution of an image display device used, thereby allowing the observer to view a clear and beautiful image. An illuminating optical system (5) illuminates an image display device with |
| 6124977 |
Image display apparatus |
September 26, 2000 |
| An image display apparatus using a modified prism as an ocular optical system, in which unwanted light caused by reflection or transmission at an area outside the effective area of a reflecting or transmitting surface is reduced to provide a favorable image of high resolution, which is f |
| 6097542 |
Optical system having reflecting surface of non-rotationally symmetric surface configuration |
August 1, 2000 |
| An optical system for use, for example, in a head-mounted image display apparatus, which provides an observation image that is clear and has minimal distortion even at a wide field angle. The head-mounted image display apparatus has an image display device (6), and an optical system |
| 6097354 |
Image display apparatus |
August 1, 2000 |
| An image display apparatus capable of providing a clear observation image at a wide field angle by using an ocular optical system including an optical element having a minimal number of constituent surfaces. The apparatus includes an image display device (5) which displays an image, |
| 6018423 |
Optical system and optical apparatus |
January 25, 2000 |
| The present invention is an optical apparatus, e.g. 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 and hence |
| 6014261 |
Optical system and optical apparatus |
January 11, 2000 |
| An image display apparatus which enables observation of a clear image at a wide field angle, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The image display apparatus has an image display device (7) and an ocular optical |
| 6008778 |
Visual display apparatus |
December 28, 1999 |
| A head-mounted visual display apparatus which uses two or more two-dimensional display devices and which is compact, lightweight and enables an image which is clear as far as the periphery of the observation image field to be observed at a wide field angle and high resolution. The ap |
| 5940218 |
Optical system and optical apparatus |
August 17, 1999 |
| 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 and hence unlikely to cause the observer to be fatigued. The im |
| 5909325 |
Image display apparatus |
June 1, 1999 |
| An ocular optical system suitable for a head- or face-mounted image display apparatus which is compact, lightweight and satisfactorily corrected for aberrations, and in which no intermediate image is formed. The image display apparatus includes an image display unit (9) and an optical sy |
| 5886824 |
Image display apparatus |
March 23, 1999 |
| 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 image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The apparatus incl |
| 5875056 |
Head or face mounted image display apparatus |
February 23, 1999 |
| The present invention is an optical apparatus, e.g. 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 and hence |
| 5818641 |
Image display apparatus |
October 6, 1998 |
| An image display apparatus which enables observation of a clear image at a wide field angle and which is extremely small in size and light in weight. The apparatus includes an image display device (6) for displaying an image, and an ocular optical system (7) for leading the image display |
| 5815326 |
Image display apparatus |
September 29, 1998 |
| An image display apparatus which enables observation of a clear image at a wide field angle, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The image display apparatus has an image display device (7) and an ocular optical |
| 5812323 |
Image display apparatus |
September 22, 1998 |
| 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 and hence unlikely to cause the observer to be fatigued. The im |
| 5793339 |
Visual display apparatus |
August 11, 1998 |
| A compact and lightweight visual display apparatus which enables observation of an image that is clear throughout the image field at a field angle of 120.degree. when the user observes with both eyes, and which has a large exit pupil diameter. The visual display apparatus has a two-d |
| 5768024 |
Image display apparatus |
June 16, 1998 |
| An image display apparatus, e.g. a head-mounted image display apparatus, which enables observation of a clear image at a wide field angle, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be readily fatigued. The image display apparatus |
| 5751494 |
Image display apparatus |
May 12, 1998 |
| A head-mounted image display apparatus which uses two or more image display devices, and which is compact and lightweight and yet enables observation of a clear image over the entire observation image field at a wide field angle and high resolution. The image display apparatus includes t |
| 5748378 |
Image display apparatus |
May 5, 1998 |
| 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 |
| 5745295 |
Image display apparatus |
April 28, 1998 |
| 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 image, and which is extremely small in size and light in weight and hence unlikely to cause the observer to be fatigued. The apparatus incl |
| 5726807 |
Small light weight head-mounted or face-mounted image display apparatus |
March 10, 1998 |
| An image display apparatus, e.g. a head-mounted image display apparatus, which is capable of satisfactorily correcting field curvature and other aberrations in an optical system simultaneously, and which enables even an image of high resolution to be sufficiently clearly observed, withou |
| 5701202 |
Head or face mounted image display apparatus |
December 23, 1997 |
| The present invention is an optical apparatus, e.g. 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 and hence |
| 5699194 |
Image display apparatus comprising an internally reflecting ocular optical system |
December 16, 1997 |
| 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 and hence unlikely to cause the observer to be fatigued. The im |
| 5623479 |
Information recording medium having a protection film and a reading apparatus for reading out in |
April 22, 1997 |
| A substantially transparent optical protection film formed on the surface of an information recording medium on which a dot pattern is printed for preventing printing quality from being degraded due to wear of the dot pattern. The protection film is formed to have such an optical thickne |
| 5587836 |
Visual display apparatus |
December 24, 1996 |
| A visual display apparatus which enables the view angle for observation to be changed between two different levels with a simple arrangement by the observer's intention or according to the kind of image reproduced. The visual display apparatus has a device (5) for displaying an image, a |
