Positive vignetting accessory

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G03B 1100

Patent

active

H00006548

ABSTRACT:
A positive vignetting accessory having a simple, lightweight snap-on plastic construction and adapted for use with a camera having a flash unit. The positive vignetting accessory diverts a portion of the flash illumination produced during a normal flash exposure cycle and directs this diverted illumination in a selected pattern toward the camera lens to effect positive vignetting.

REFERENCES:
patent: 425812 (1890-04-01), Lloyd
patent: 2972931 (1961-02-01), Roob
patent: 3528737 (1970-09-01), Denner
patent: 3639109 (1987-01-01), Hudspeth
patent: 4007471 (1977-02-01), Land et al.
patent: 4107716 (1978-08-01), Pfefer
patent: 4268146 (1981-05-01), Johnson
patent: 4304471 (1981-12-01), Jones
patent: 4436400 (1984-03-01), Charis et al.
patent: 4508440 (1985-04-01), Costa et al.
patent: 4707106 (1987-11-01), Johnson et al.
patent: 4717930 (1988-01-01), Wheeler
Scope Industries, Ltd. advertisement copyrighted 1986.

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

Positive vignetting accessory does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-841256

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