Mattebox for camera lenses

Details Mattebox for camera lenses Mattebox for camera lenses

1996-07-22

1997-10-14

Metjahic, Safet

Photography

Camera detail

Lens mount

396545, G03B 1100

Patent

active

056781083

ABSTRACT:
In the proposed gobo (11), the diaphragm mask (13) is placed on a stationary surface, especially of a planar member, and has an aperture (27) of the gobo substantially adjustable along the stationary surface or planar member according to the focal length used. The diaphragm mask has two curtains (15, 16), preferably adjustable in pairs in opposite directions, which limit the free aperture of the gobo depending on the focal length used. The curtains are adjusted by electromotors (M1, M2) via belts (19, 21), rollers (20, 22), and bevel gears (25, 26). The motors (M1, M2) are controlled by a controller (28) and, via potentiometer readings, receive as input signals the adjustment values of the lens for focal length and focus.

REFERENCES:
patent: 3812509 (1974-05-01), Wostphalgh
patent: 5086311 (1992-02-01), Nara et al.
patent: 5223889 (1993-06-01), Mouner
patent: 5258790 (1993-11-01), Tanaka
patent: 5294954 (1994-03-01), Nomura et al.
patent: 5345285 (1994-09-01), Hasushita et al.
patent: 5489958 (1996-02-01), Katagiri et al.

Affiliated with

Also associated with

Rating

Mattebox for camera lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mattebox for camera lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mattebox for camera lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1562011