Compact afocal attachment for use with photographic objectives

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

350453, 350477, 350481, G02B 910, G02B 912, G02B 1318

Patent

active

044962231

ABSTRACT:
A compact convertible photographic objective that is separable into two working components consisting of a front substantially afocal component that can be rotated or translated laterally into or away from a coaxial position with a rear component which normally is fixed in position on an assigned optical axis. Movement of the front component into coaxial alignment with the rear component increases the focal length of the combination so that the two components can be used for telephoto purposes.

REFERENCES:
patent: 2169130 (1939-08-01), Tronnier et al.
patent: 2279372 (1942-04-01), Herzberger
patent: 2298090 (1942-10-01), Warmisham
patent: 2728266 (1955-12-01), Tolle
patent: 2731883 (1956-01-01), Koller et al.
patent: 2803167 (1957-08-01), Koller et al.
patent: 3029700 (1962-04-01), Price
patent: 3094580 (1963-06-01), Rosier
patent: 3108152 (1963-10-01), Hermanni
patent: 3388650 (1968-06-01), Westphalen
patent: 3472578 (1969-10-01), Price
patent: 3649104 (1972-03-01), Edwards et al.
patent: 3893137 (1975-07-01), Ettischer
patent: 3903537 (1975-09-01), Ettischer
patent: 4109995 (1978-08-01), Betensky
patent: 4171872 (1979-10-01), Baker
patent: 4214829 (1980-07-01), Ohashi
patent: 4303314 (1981-12-01), Matsui

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Compact afocal attachment for use with photographic objectives 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 afocal attachment for use with photographic objectives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact afocal attachment for use with photographic objectives will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-503762

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.