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Class Information
Number: 352/216
Name: Optics: motion pictures > Shutters > Rotary > With axially spaced independently driven blades > Variable aperture size
Description: Subject matter which includes means to adjust the relative position of the blades while the shutter is in operation so as to alter the size of the light passing aperture.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6865030 |
Variable optical slit assembly |
Mar. 8, 2005 |
| 5223867 |
Control and regulation apparatus for the exposure and transport speed of a moving picture film in a moving picture camera |
Jun. 29, 1993 |
| 5137346 |
Motion picture camera with adjustable rotary shutter |
Aug. 11, 1992 |
| 5074657 |
Timing adjustment for reverse movie photography |
Dec. 24, 1991 |
| 5072162 |
Speed controller and instrument having the same |
Dec. 10, 1991 |
| 4889424 |
Movie camera shutter |
Dec. 26, 1989 |
| 4743108 |
Dynamic shutter mechanism |
May. 10, 1988 |
| 4699483 |
Device for adjusting a video tape camera shutter mechanism |
Oct. 13, 1987 |
| 4695887 |
Variable speed video camera |
Sep. 22, 1987 |
| 4695891 |
Variable speed video camera |
Sep. 22, 1987 |
| 4669841 |
Rotary shutter |
Jun. 2, 1987 |
| 4643548 |
Shutter mechanism for a video tape camera |
Feb. 17, 1987 |
| 4592632 |
Motion picture shutter method and apparatus |
Jun. 3, 1986 |
| 4576456 |
Image sensing system |
Mar. 18, 1986 |
| 4551763 |
Diagonal sweep shutter mechanism for video tape camera |
Nov. 5, 1985 |
| 4547051 |
Shutter for a video tape camera |
Oct. 15, 1985 |
| 4545659 |
Device for continuously varying the shutter speed of a video tape camera |
Oct. 8, 1985 |
| 4365876 |
Motion picture camera |
Dec. 28, 1982 |
| 4257693 |
Cine camera |
Mar. 24, 1981 |
| 4157570 |
TV-Cine conversion projector |
Jun. 5, 1979 |
| 3951531 |
Motion picture camera with exposure time prolonging means |
Apr. 20, 1976 |
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