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US 5,636,001 AGranted
Digital film camera and digital enlarger
OwnerJohn Collierinventor
Life of this patent
Estimating the term…
Abstract
Exposure control for cameras and photographic enlargers in which image light from a lens or light source is reflected off a spatial light modulator having a plurality of controllable elements able to be positioned in three dimensions. This reflected light is received by a photoelectric conversion device, analyzed by electronics, modulated and reflected by the spatial light modulator in a second dimension onto photosensitive material.
Claims2
An exposure control apparatus comprising:
- (a) a lens for focusing an image light
- (b) a photoelectric conversion device for converting said image light into an electrical signal
- (c) a spatial light modulator of the deformable mirror device type reflecting said image light and having a plurality of controllable elements
- (d) a photo sensitive material
- (e) a control means controlling, individually and simultaneously, the plurality of controllable elements of the deformable mirror device between a first state, in which said received image light is guided to said photoelectric conversion device, and a second state in which said received image light is guided onto said photosensitive material
- (f) an exposure analysis unit analyzing an exposure level of said image light based on said electrical signal, said control unit controls said controllable elements based on output from said exposure analysis unit.
3 more elements
A darkroom device comprising:
- (a) a focusing lens
- (b) a light source
- (c) a photographic negative
- (d) a spatial light modulator of the deformable mirror device type receiving light from said light source modified by the photographic negative and having a plurality of controllable elements
- (e) a photoelectric conversion device for converting said light source into an electrical signal
- (f) a control means controlling, individually and simultaneously the plurality of controllable elements of said spatial light modulator of the deformable mirror device type between a first state, in which said received light through the photographic negative is guided to said photoelectric conversion device, and a second state in which said received light through the photographic negative is guided to said focusing lens
- (g) an exposure analysis unit analyzing an exposure level of said image light through the photographic negative based on said electrical signal;
- and wherein said control unit controls said controllable elements based on output from said exposure analysis unit.
5 more elements
Dependencies are inferred from the claim text.