| 摘要 |
An optical system for an electrophotographic film camera/reader-verifier. The image is transmitted downwardly to a first mirror (28) fixed at an angle of approximately 45 DEG with respect to either a horizontal or vertical plane. The image is, in turn, transmitted to a second mirror (32) fixedly disposed within a vertical plane, and a focusing lens (36) finally transmits the image to a film element for recording thereon. When an image frame of the film element is to be viewed, read, or verified, a projection lamp (40) is energized for illuminating the film element whereby the illuminated image thereof is transmitted to a third mirror (44), which is located at an inclined angle of approximately 15 DEG with respect to a horizontal plane. The mirror (44) in turn transmits the image of the film element to a front projection screen (46) which is also fixedly disposed at an angle of approximately 15 DEG with respect to a vertical plane. During a reading or verifying mode, the original document is removed from the copyboard (20) whereby viewing of the projection screen (46) is achieved through the clear-glass copyboard (20). The film element is blue light-insensitive, and the projection screen (46) is tinted or colored blue such that an image of the screen (46) is not recorded upon the film during an imaging or recording mode. A blue-colored filter (50) is interposed such that only a blue-colored image of the film element image frame is transmitted to the project screen (46) for maximum contrast.
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