公开(公告)号：US3679818A

公开(公告)日：1972-07-25

申请号：US3679818D

申请日：1971-04-23

Applicant: BELL TELEPHONE LABOR INC

Inventor： COURTNEY-PRATT JEOFRY STUART

IPC: B41M5/24 ,  H04N1/50 ,  H04N9/02 ,  H04N5/76

CPC classification number: B41M5/24 ,  B41M5/34 ,  H04N1/50

Abstract: A film with a repeating color filter dot pattern on one side and an opaque coating such as bismuth metal on the other side, serves as a medium for reproducing color transparencies. Laser light having the same frequency as the dot color is directed through those dots constituting the desired image. The metallic coating behind each such dot is thereby evaporated, leaving the dot color unaffected. Illumination from the metal side produces the desired projected image. The image may also be viewed in reflected light by placing the film against a white background sheet.

Abstract translation: 在一侧具有重复滤色器点图案的膜和另一侧上的不透明涂层如铋金属，用作再现彩色透明度的介质。 具有与点色相同频率的激光被引导通过构成期望图像的那些点。 因此，每个这样的点后面的金属涂层被蒸发，留下点色不受影响。 从金属侧照明产生所需的投影图像。 通过将胶片放置在白色背景片上也可以在反射光下观看图像。

公开(公告)号：US3665237A

公开(公告)日：1972-05-23

申请号：US3665237D

申请日：1970-12-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： COURTNEY-PRATT JEOFRY STUART

IPC: H01J31/08 ,  H01J1/70

CPC classification number: H01J31/08

Abstract: An image-retaining panel receives a momentarily projected image, and retains a replica of that image for extended periods irrespective of local lighting. The panel consists of a pair of electroluminescent slabs electrically connected by an opaque layer that conducts only laterally. The viewing image formed on the outer electroluminescent slab does not affect the photoconductivity of the medium which drives the inner electroluminescent slab. Hence, ambient light falling on the outer slab does not affect the image.