公开(公告)号：US3776634A

公开(公告)日：1973-12-04

申请号：US3776634D

申请日：1972-11-22

Applicant: RCA CORP

Inventor： WILLIAMS R

IPC: G03G15/02 ,  G03G15/14 ,  G03G15/18 ,  G03G15/22 ,  G03B

CPC classification number: G03G15/18 ,  G03G15/14 ,  G03G15/22

Abstract: An electrostatic charge pattern on an image-bearing surface is reproduced on a collector plate by means including a transfer sheet. The transfer sheet, comprising electrically insulating material, is disposed for reciprocal movement between the imagebearing surface and the collector plate. The transfer sheet is first disposed with one surface adjacent the image-bearing surface. The other surface of the transfer sheet, having a plurality of discrete dots of electrically conductive material thereon, is momentarily grounded to induce thereon an electrostatic charge whose charge density varies with the charge pattern on the image-bearing surface. The transfer sheet is then moved to the collector plate which comprises an electrically insulating plate with a plurality of electrically conductive discrete dots thereon adapted to contact the dots on the transfer sheet. The opposite surface of the collector plate is next grounded so that the electrostatic charge pattern on the transfer sheet is transferred to the collector plate.

Abstract translation: 图像承载表面上的静电荷图案通过包括转印纸的装置在集电板上再现。 包括电绝缘材料的转印纸被设置成在图像承载表面和收集板之间往复运动。 首先将转印片设置成与图像承载表面相邻的一个表面。 在其上具有多个离散的导电材料点的转印片的另一个表面瞬间接地，从而在其上引起电荷密度随图像承载表面上的电荷图案而变化的静电荷。 然后将转印片移动到集电板，该集电板包括其上具有多个导电离散点的电绝缘板，其适于接触转印纸上的点。 集电板的相对表面接下来接地，使得转印纸上的静电荷图案被转印到收集板。

公开(公告)号：US3817320A

公开(公告)日：1974-06-18

申请号：US12007671

申请日：1971-03-02

Applicant: RCA CORP

Inventor： WILLIAMS R

IPC: B64G1/50 ,  F24H3/00

CPC classification number: B64G1/503 ,  B64G1/50

Abstract: A passive cooler arranged for three stages of cooling including an outer L-shaped member serving as two of the cooling stages and an inner member serving as the third stage of cooling at a preselected equilibrium temperature. Certain surfaces of each leg of the outer member and an exposed surface of the inner member are each given a surface finish having a spectral response in accordance with certain radiation wavelengths such that the inner member is maintained at a preselected temperature which is lower than otherwise possible when the cooler is exposed to thermal radiation, the cooler being located in an environment having a temperature lower than the preselected temperature.

Abstract translation: 被配置为三级冷却的被动冷却器，包括用作两个冷却级的外部L形部件和用作在预选平衡温度下的第三级冷却的内部部件。 外部构件的每个腿的某些表面和内部构件的暴露表面各自被赋予具有根据某些辐射波长的光谱响应的表面光洁度，使得内部构件保持在比其他可能性低的预选温度 当冷却器暴露于热辐射时，冷却器位于温度低于预选温度的环境中。

公开(公告)号：US3746873A

公开(公告)日：1973-07-17

申请号：US3746873D

申请日：1970-12-24

Applicant: RCA CORP

Inventor： WILLIAMS R

IPC: G01J5/06 ,  H01L31/0203 ,  H01L31/024

CPC classification number: H01L31/024 ,  G01J5/061 ,  H01L31/0203

Abstract: An infra-red (IR) detector operating in ambient temperatures in the range of 4* to 200* Kelvin, and pressures in the range of 10 2 to 10 12 mm Hg is provided with a trap for preventing condensation and thus icing of water molecules in the infra-red (IR) optical path that may be present in or near the detector or icing of water molecules which may emerge from the surface of the components adjacent to the detector owing to the ambient low pressures. The detector is mounted within a two-piece cylindrical shield around the IR-path arranged in coaxial spaced relation. The clearance space between the shield pieces defined by the overlapping open ends of the cylinders is less than the mean free path of water molecules at the ambient pressure which is less than 10 microns for orbiting satellites. The outer shield is kept at a temperature that is greater than the vapor condensation or crystallization temperature while the inner shield, insulated from the outer shield, is kept at a temperature that is less than the vapor condensation or crystallization temperature. Water vapor or other vaporizable contaminants that would tend to leak into the portion of the inner shield adjacent to the detector surface are condensed or crystallized at the surface of the inlet portion of the space and thus precludes such vapors from being deposited on the operating portions of the detector disposed within the inner shield. Although water vapor is the more troublesome volatile vapor that is removed from the sensor chamber, oils, alcohols, and various synthetic polymers are also removed precluding contaminant deposition in the sensor chamber.

Abstract translation: 在4°至200°K范围内的环境温度下工作的红外（IR）探测器，在10 -2至10 12 mm Hg范围内的压力设有防止冷凝的捕集阱 并因此结冰可能存在于检测器中或附近的红外（IR）光路中的水分子，或由于环境低压而可能从与检测器相邻的部件的表面出现的水分子结冰。 检测器安装在围绕IR路径设置的两片圆柱形屏蔽件中，以同轴间隔的关系布置。 由气缸的重叠开口端限定的屏蔽件之间的间隙小于环绕压力的水分子在轨道卫星上小于10微米的平均自由程。 外屏蔽保持在大于蒸汽冷凝或结晶温度的温度，而与外屏蔽绝缘的内屏蔽件保持在小于蒸气冷凝或结晶温度的温度。 倾向于泄漏到邻近检测器表面的内屏蔽部分的水蒸气或其它可蒸发的污染物在空间的入口部分的表面处被冷凝或结晶，因此排除了这样的蒸汽沉积在 检测器设置在内屏蔽内。 虽然水蒸气是从传感器室中除去的更麻烦的挥发性蒸气，但也除去了油，醇和各种合成聚合物，防止了传感器室中的污染物沉积。