Photographing lens barrel provided with a catadioptric optical s

Details Photographing lens barrel provided with a catadioptric optical s Photographing lens barrel provided with a catadioptric optical s

1984-10-10

1987-09-01

Corbin, John K.

350255, G02B 1708, G02B 704

Patent

active

046905162

ABSTRACT:
In a photographing lens, only a second dioptric system is moved in the direction of the optical axis for focusing while keeping constant the positional relation between a first dioptric system and first and second catoptric systems. The first catoptric system has a through-hole formed at the central area. The second dioptric system is moved within a range containing the through-hole and the area near the through-hole. A driving mechanism for moving the second dioptric system is so mounted as to pass through the first catoptric system. The driving mechanism includes a slide member and a movement-expanding member. The slide member is slidable in the direction along the optical axis interlocking with the motion of an operation member. The movement-expanding member expands the movement of the slide member and transmits the expanded movement to the second dioptric system.

REFERENCES:
patent: 3671109 (1972-06-01), Sugano et al.
patent: 4445756 (1984-05-01), Komoto
patent: 4523816 (1985-06-01), Kreitzer

Affiliated with

Also associated with

Rating

Photographing lens barrel provided with a catadioptric optical s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photographing lens barrel provided with a catadioptric optical s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographing lens barrel provided with a catadioptric optical s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1261602