Electronic camera with binary lens element array

• US 5,760,834 A
• Filed: 08/08/1994
• Issued: 06/02/1998
• Est. Priority Date: 09/30/1992
• Status: Expired due to Term

• Current Assignee: Bell Semiconductor, LLC (Hilco Inc. (d/b/a Hilco Global))
• Original Assignee: LSI Logic Corporation (Broadcom, Inc.)
• Inventors: Rostoker, Michael D.
• Primary Examiner(s): GARBER, WENDY RAE
• Application Number:
  US08/287,128
• Time in Patent Office: 1,394 Days
• Field of Search: 348/333, 348/335, 348/340, 348/13, 348/14, 348/15, 348/20, 348/578
• US Class Current: 348/340
• CPC Class Codes: H01L 27/14618 Containers
• CPC Class Codes: H01L 27/14625 Optical elements or arrangements associated with the device
• CPC Class Codes: H01L 27/14645 Colour imagers
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 25/00 Circuitry of solid-state image sensors [SSIS]; Control thereof

Abstract

An electronic camera includes a photosensor array that is supported by a housing. The photosensor array includes a plurality of binary diffractive lens elements for forming a substantially identical light image on laterally spaced areas of a surface respectively. A plurality of photosensors are disposed on the surface within the laterally spaced areas for receiving different portions of the light image respectively such that the photosensors in aggregation receive substantially all of the light image. The photosensors can have constant spacings therebetween, and the lenses have spacings therebetween that increase away from a predetermined point in the array. Alternatively, the lenses can have constant spacings therebetween, and the photosensors have spacings therebetween that increase away from a predetermined point in the array. As another alternative, the lenses and the photosensors can have constant spacings therebetween, and the lenses have focal points with spacings therebetween that increase away from a predetermined point in the array. The camera further includes a liquid crystal panel that is supported by the housing for displaying a received video signal. The photosensor array is substantially transparent, and the liquid crystal panel is disposed behind and visible through the photosensor array.

Claims

1. An electronic camera comprising:

a housing;

a photosensor array that is supported by the housing and includes;

a plurality of lenses for focusing light indicative of an image onto a semiconductor substrate;

a plurality of photosensors disposed on said semiconductor substrate for receiving the light indicative of said image such that the photosensors in aggregation receive substantially all of the light indicative of said image;

wherein the photosensors generate electronic signals indicative of said image;

a signal converter for converting the electronic signals into a camera video signal;

a display unit supported in said housing for displaying a received video signal;

wherein said display unit is a liquid crystal panel;

wherein said photosensor array is substantially transparent; and

the liquid crystal display panel is disposed behind and visible through the photosensor array.

2. An electronic camera according to claim 1 wherein:

the lenses comprise binary diffractive lens element.

3. An electronic camera according to claim 1 wherein:

the lenses comprise two dimensional binary diffractive lens elements.

4. An electronic camera according to claim 1 wherein:

the lenses comprise circular binary diffractive lens elements.

5. An electronic camera according to claim 1, wherein, each of the photosensors is smaller than said image.

6. An electronic camera according to claim 1, wherein, an aggregate area of the photosensors is substantially equal to an area of said light image.

7. An electronic camera according to claim 1, wherein,

the photosensors have constant spacings therebetween;

and

the lenses have spacings therebetween that increase away from a predetermined point in the array.

8. An electronic camera according to claim 7, wherein, said predetermined point is a center of the array.

9. An electronic camera according to claim 1, wherein,

the lenses have constant spacings therebetween;

and

the photosensors have spacings therebetween that increase away from a predetermined point in the array.

10. An electronic camera according to claim 9, wherein said predetermined point is a center of the array.

11. An electronic camera according to claim 1, wherein,

the lenses and the photosensors have constant spacings therebetween;

and

the lenses have focal points with spacings therebetween that increase away from a predetermined point in the array.

12. An electronic camera according to claim 11, wherein said predetermined point is a center of the array.

13. An electronic camera according to claim 1, further comprising:

a signal converter for converting said electronic signals into a television video signal.

14. An electronic camera according to claim 1, further comprising:

a signal converter for converting said electronic signals into a telephonic video signal.

15. An electronic camera according to claim 1, further comprising:

a monitor for displaying said camera video signal.

16. An electronic camera as in claim 1, further comprising illumination means for backlighting the liquid crystal panel.

17. An electronic camera as in claim 16, further comprising control means for alternatingly enabling the signal converter to produce said camera video signal and inhibiting the illumination means from backlighting the liquid crystal panel;

and inhibiting the signal converter from producing said camera video signal and enabling the illumination means to backlight the liquid crystal panel for displaying said received video signal.

18. An electronic camera as in claim 1, in which:

the liquid crystal panel has a transparent state; and

the photosensor array is disposed behind and capable of being imaged through the liquid crystal panel when the liquid crystal panel is in said transparent state.

19. An electronic camera according to claim 1, wherein, the housing is shaped to be worn around a human wrist.

20. An electronic camera as in claim 1, further comprising an audio transceiver.

21. An electronic camera, comprising:

a housing;

a photosensor array that is supported by the housing and includes;

a plurality of lenses for focusing light indicative of an image onto a semiconductor substrate;

a plurality of photosensors disposed on said semiconductor substrate for receiving the light indicative of said image such that the photosensors in aggregation receive substantially all of the light indicative of said image;

wherein the photosensors generate electronic signals indicative of said image;

a signal converter for converting the electronic signals into a camera video signal;

a display unit supported in said housing for displaying a received video signal;

wherein said display unit is a liquid crystal panel;

wherein said liquid crystal panel has a transparent state;

the photosensor array is disposed behind and capable of being imaged through the liquid crystal panel when the liquid crystal panel is in said transparent state;

the photosensor array is substantially transparent; and

the electronic camera further comprises, illuminating means for backlighting the liquid crystal panel through the photosensor array.

22. An electronic camera as in claim 21, further comprising control means for alternatingly enabling the signal converter to produce said camera video signal, controlling the liquid crystal panel to said transparent state and inhibiting the illumination means from backlighting the liquid crystal panel;

and inhibiting the signal converter from producing said camera video signal, controlling the liquid crystal panel to display said received video image and enabling the illumination means to backlight the liquid crystal panel.

23. An electronic camera, comprising:

a housing;

a photosensor array that is supported by the housing and includes;

a plurality of lenses for focusing light indicative of an image onto a semiconductor substrate;

a plurality of photosensors disposed on said semiconductor substrate for receiving the light indicative of said image such that the photosensors in aggregation receive substantially all of the light indicative of said image;

wherein the photosensors generate electronic signals indicative of said image;

a signal converter for converting the electronic signals into a camera video signal;

a display unit supported in said housing for displaying a received video signal;

wherein said display unit is a liquid crystal panel;

wherein said photosensor array is substantially transparent;

the liquid crystal panel is disposed between the lenses and the photosensors;

the lenses are substantially transparent such that the liquid crystal display is capable of being viewed through the lenses;

the liquid crystal panel has a transparent state;

the photosensor array is disposed behind and capable of being imaged through the liquid crystal panel when the liquid crystal panel is in said transparent state; and

the electronic camera further comprises, illuminating means for backlighting the liquid crystal panel through the photosensor array.