Optical system and image taking apparatus

Details Optical system and image taking apparatus Optical system and image taking apparatus

1998-02-10

2000-08-01

Epps, Georgia

Optical: systems and elements

Lens

With reflecting element

359630, 359631, 359634, 359638, G02B 1700, G02B 900

Patent

active

060975504

ABSTRACT:
There is disclosed an optical system adapted for use in an image taking device. The optical system comprises an optical element having an entrance surface, a curved internal reflective surface and an exit surface on the surface of a transparent member composed for example glass, in which the light beam from an object is refracted at the entrance surface, thus being incident on the interior of the optical element, then is internally reflected by the reflective surface and refracted at the exit surface, thus emerging from the optical element and focusing on an imaging plane. The internal reflective surface is an off-axis reflective surface, and the entrance surface, the internal reflective surface or surfaces and the exit surface are so designed as to cancel the chromatic aberration generated at the refractive surfaces, while satisfactorily correcting other optical aberrations.

REFERENCES:
patent: 4775217 (1988-10-01), Ellis
patent: 5453877 (1995-09-01), Gerbe et al.
patent: 5699194 (1997-12-01), Takashashi
patent: 5790311 (1998-08-01), Togino
patent: 5825560 (1998-10-01), Ogura et al.
patent: 5917662 (1999-06-01), Sekita
patent: 5973858 (1999-10-01), Sekita
patent: 5995287 (1999-11-01), Sekita
patent: 5999311 (1999-12-01), Nanba et al.
patent: 6021004 (2000-02-01), Sekita et al.
Patent Abstracts of Japan, vol. 97, No. 3 (JP 08-292368, Nov. 5, 1996), Mar. 31, 1997.

Affiliated with

Also associated with

Rating

Optical system and image taking apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical system and image taking apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system and image taking apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669691