Electronic imaging camera with microchannel plate

• US 4,555,731 A
• Filed: 04/30/1984
• Issued: 11/26/1985
• Est. Priority Date: 04/30/1984
• Status: Expired due to Term

• Current Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Original Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Inventors: Zinchuk, Michael
• Primary Examiner(s): Brown, Thomas W.
• Assistant Examiner(s): Lev, Robert G.
• Application Number:
  US06/605,188
• Time in Patent Office: 575 Days
• Field of Search: 358/212, 358/213, 358/209, 358/211, 358/110, 357/24 LR, 250/578, 250/213 R, 250/330
• US Class Current: 348/217.1
• CPC Class Codes: H04N 23/20 for generating image signals from infrared radiation only
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 5/33 Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

Imaging apparatus for an electronic imaging camera responds to a scene image by converting photons into electrons representative of the scene image. A microchannel electron multiplier, including a microchannel plate, having an output surface at its output side is coupled to receive the electrons representative of the scene image and operates to intensify the electron representation of the scene image. A charge transfer device in the form of a charge coupled device (CCD), directly coupled to the output surface responds to the electron output to produce an electric signal representation of the scene image received by the camera. The electric signal representation is read out of the CCD by clock voltages and may have the form of a serial picture sample output. A signal processor may be provided to develop a video output from the sample output.

Claims

1. Image receiving and converting apparatus for use with an electronic imaging camera, said apparatus comprising means responsive to an image received by the camera of the scene to be reproduced for converting photons into electrons representative of the scene image, electron multiplier means, including an output surface at its output side, coupled to said converting means and responsive to the electrons therefrom representative of the scene image for intensifying the electron representation of the scene image, and a charge transfer device coupled to said output surface and directly responsive to its electron output for producing an electric signal representation of the image received by the camera.

2. The receiving and converting apparatus according to claim 1, including means coupled to said charge transfer device for reading out and receiving the electrical signal representation of the scene image received by the camera.

3. The receiving and converting apparatus according to claim 1, wherein said means for converting photons into electrons comprising a phosphor screen.

4. The receiving and converting apparatus according to claim 1, wherein said output surface is defined by a photocathode surface.

5. The receiving and converting apparatus according to claim 1 wherein said electron multiplier means comprises a microchannel multiplier.

6. In an electronic imaging camera which includes means for receiving and optically projecting an image of a scene to be reproduced, the improvement comprising means responsive to the projected scene image for producing electrons representative of the scene image, a microchannel multiplier responsive to the electrons representative of the scene image and including an output surface, and a charge transfer device coupled to said output surface and directly responsive to electrons therefrom for developing an electrical signal representation of the scene image.

7. The improved camera according to claim 6 wherein said means for producing an electron representation of the scene image comprises a phosphor screen.

8. The improved camera according to claim 6 wherein said output surface is defined by a photocathode surface.

9. The improved camera according to claim 6 including means coupled to said charge transfer device for reading out and receiving the electrical signal representation of the scene image received by the camera.

10. In an electronic imaging camera which includes means for receiving and optically projecting an image of a scene to be reproduced, the improvement comprising means responsive to the scene image for producing an electron representation of the scene image, means including an output surface at its output side and responsive to the electron representation of the scene image for producing an intensified electron representation of the scene image, and means coupled to said output surface and directly responsive to electrons therefrom for developing an electrical signal representation of the scene image received by the camera.

11. An improved camera according to claim 10, wherein said means coupled to said output surface comprises a charge transfer device.

12. The improved camera according to claim 11, including means coupled to said charge transfer device for reading out and receiving the electrical signal representation of the scene image received by the camera.

13. The improved camera according to claim 10, wherein said means for producing an electron representation of the scene image comprises a phosphor screen.

14. The improved camera according to claim 10, wherein said output surface is defined by a photocathode surface.

15. Image receiving and converting apparatus for use in an electronic imaging camera, said device comprising means for producing an intensified electron representation of a scene image received by the camera on an output surface thereof, and a charge transfer device directly coupled to said output surface and responsive to electrons therefrom for developing an electric signal representation of the scene image received by the camera.

16. The device of claim 15 wherein said means for producing an intensified electron representation comprises a microchannel multiplier.

17. The device of claim 15 wherein said output surface is defined by a photocathode surface.