Re-imaging lens for focus state detecting device

Details Re-imaging lens for focus state detecting device Re-imaging lens for focus state detecting device

1989-03-28

1990-10-30

Hix, L. T.

354408, G03B 300, G03B 1318

Patent

active

049672266

ABSTRACT:
A re-imaging lens, for use in a focus state detecting device, has first and second lens elements for re-focusing a ray of light coming from an object and third and fourth lens elements for re-focusing the ray of light coming from the object. The first, second, third and fourth lens elements are formed integrally, and the first and second lens elements have mutually the same curved surface structures which mutually abut at a boundary line, while the third and fourth lens elements have mutually the same curved surface structures which do not mutually abut but which abut on the curved surfaces of the first and second lens elements respectively at respective boundary lines.

REFERENCES:
patent: 4526458 (1985-07-01), Kanamura et al.
patent: 4774539 (1988-09-01), Suda et al.
patent: 4841326 (1989-06-01), Koyama et al.

Affiliated with

Also associated with

Rating

Re-imaging lens for focus state detecting device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Re-imaging lens for focus state detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Re-imaging lens for focus state detecting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-277811