Cold emulsion camera专利检索-干冰制冷液制冷技术专利检索查询-专利查询网

Cold emulsion camera

阅读：539发布：2022-11-01

专利汇可以提供Cold emulsion camera专利检索，专利查询，专利分析的服务。并且A cold emulsion camera in which the film is gripped between an optical plug and a metallic plate, which is reduced to a very low temperature by dry ice, for example. The optical plug, which may be of optical glass, is sufficiently thick to serve as an insulator for preventing frosting of the outer face of the plug. The clamping action of a metal plate against the inner end of the plug with the interposed film prevents frosting in this region.，下面是Cold emulsion camera专利的具体信息内容。

权利要求

1. A cold emulsion camera for exposing photographic film to light while maintaining the film at a reduced temperature comprising: A. optical plug means of a transparent material of low thermal conductivity, said plug means having: 1. a first surface means which is planar; 2. a second surface means removed from the first surface means a distance such that when the first surface means is cooled, the temperature of the second surface means is not reduced below the point at which atmospheric water vapor condenses thereon during the period of photographic film exposure; B. a clamping plate having a planar surface positionable parallel to the first surface means of the optical plug; C. means for clamping photographic film between the planar surface of the clamping plate and the planar surface of the optical plug; D. means for refrigerating the clamping plate.

2. a second surface means removed from the first surface means a distance such that when the first surface means is cooled, the temperature of the second surface means is not reduced below the point at which atmospheric water vapor condenses thereon during the period of photographic film exposure; B. a clamping plate having a planar surface positionable parallel to the first surface means of the optical plug; C. means for clamping photographic film between the planar surface of the clamping plate and the planar surface of the optical plug; D. means for refrigerating the clamping plate.

2. A cold emulsion camera as claimed in claim 1 in which said optical plug means is of optical glass having opposite faces flat and parallel to each other.

3. A cold emulsion camera as claimed in claim 1, in which the optical plug means is a thickness of the order of 1 3/4 inches.

4. A cold emulsion camera as claimed in claim 1, in which the optical plug means consists of polymethylmethacrylate.

5. A cold emulsion camera as claimed in claim 1, in which said clamping plate constitutes the bottom wall of cold box for dry ice.

6. A cold emulsion camera as claimed in claim 1, comprising means for mounting said optical plug for enabling same to be readily removed fOr replacement purposes.

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Cold emulsion camera

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