Compact wide-field-of-view imaging optical system

Details Compact wide-field-of-view imaging optical system Compact wide-field-of-view imaging optical system

2006-05-09

2006-05-09

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Including a nonspherical surface

C359S356000

Reexamination Certificate

active

07042656

ABSTRACT:
An imaging optical system has an optical axis and a refractive optical group including a lens lying on the optical axis. At least one lens of the refractive optical group lying on the optical axis has an aspheric front surface and an aspheric back surface. An image surface lies on the optical axis, and the refractive optical group forms an image at the image surface. The image surface is preferably substantially planar. A detector, such as a focal plane array detector, lies on the optical axis such that a ray of light passing through the lens is incident upon the detector. It is preferred that there are two lenses lying on the optical axis, with each lens having an aspheric front surface and an aspheric back surface. The imaging optical system is suitable for use as a large-aperture, wide-field-of-view, compact system having an F number of less than about F/1.5, a field of view of more than about 45 degrees, and a telephoto ratio of less than about 2.0.

REFERENCES:
patent: 3944337 (1976-03-01), Ruben
patent: 4109995 (1978-08-01), Betensky
patent: 4300817 (1981-11-01), Betensky
patent: 4494819 (1985-01-01), Lidwell
patent: 5251063 (1993-10-01), Baumann
patent: 5493441 (1996-02-01), Chipper
patent: 5502592 (1996-03-01), Jamieson
patent: 6154245 (2000-11-01), Kato
patent: 6292293 (2001-09-01), Chipper
patent: 6356396 (2002-03-01), Chen et al.
patent: 6414802 (2002-07-01), Betensky

Affiliated with

Also associated with

Rating

Compact wide-field-of-view imaging optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compact wide-field-of-view imaging optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact wide-field-of-view imaging optical system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3646984