Electro-optical illumination control system

• US 4,435,732 A
• Filed: 07/16/1980
• Issued: 03/06/1984
• Est. Priority Date: 06/04/1973
• Status: Expired due to Term

• Current Assignee: Gilbert P. Hyatt
• Original Assignee: Gilbert P. Hyatt
• Inventors: Hyatt, Gilbert P.
• Primary Examiner(s): Murray, Richard
• Application Number:
  US06/169,257
• Time in Patent Office: 1,329 Days
• Field of Search: 358/254, 358/229, 358/60, 362/294, 362/345, 362/373
• US Class Current: 348/748
• CPC Class Codes: B60R 16/0373 Voice control in general G10L
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: G01S 15/897 using application of holographic techniques
• CPC Class Codes: G01S 15/8977 using special techniques for image reconstruction, e.g. FFT, geometrical transformations, spatial deconvolution, time deconvolution
• CPC Class Codes: G01S 7/52026 Extracting wanted echo signals Doppler systems G01S15/50; Doppler short range imaging systems G01S15/8979
• CPC Class Codes: G02F 1/0121 Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
• CPC Class Codes: G02F 1/13318 Circuits comprising a photodetector
• CPC Class Codes: G03F 9/7049 Technique, e.g. interferometric
• CPC Class Codes: G03F 9/7088 Alignment mark detection, e.g. TTR, TTL, off-axis detection, array detector, video detection
• CPC Class Codes: G04G 99/006 Electronic time-pieces using a microcomputer, e.g. for multi-function clocks
• CPC Class Codes: G05B 19/351 the positional error is used to control continuously the servomotor according to its magnitude
• CPC Class Codes: G05B 19/408 characterised by data handling or data format, e.g. reading, buffering or conversion of data
• CPC Class Codes: G05B 19/4083 Adapting programme, configuration
• CPC Class Codes: G05B 19/4086 Coordinate conversions; Other special calculations
• CPC Class Codes: G05B 19/409 characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters G05B19/408, G05B19/4093 take precedence
• CPC Class Codes: G05B 19/4093 characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
• CPC Class Codes: G05B 19/414 Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
• CPC Class Codes: G05B 19/4142 characterised by the use of a microprocessor G05B19/4141 takes precedence
• CPC Class Codes: G06F 13/16 for access to memory bus G06F13/28 takes precedence
• CPC Class Codes: G06J 1/00 Hybrid computing arrangements digitally-programmed analogue computers G06G7/06
• CPC Class Codes: G07G 1/12 : electronically operated digital data processing aspects G06Q20/00
• CPC Class Codes: G10L 19/00 : Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: G11C 11/565 : using capacitive charge storage elements
• CPC Class Codes: G11C 19/287 : Organisation of a multiplicity of shift registers
• CPC Class Codes: G11C 19/36 : using multistable semiconductor elements
• CPC Class Codes: G11C 27/00 : Electric analogue stores, e.g. for storing instantaneous values
• CPC Class Codes: G11C 27/04 : Shift registers
• CPC Class Codes: G11C 7/1042 : using interleaving techniques, i.e. read-write of one part of the memory while preparing another part

Abstract

Control of illumination with illumination amplifier devices provides a basis for implementing various types of illumination systems. Also illumination amplifiers in closed illumination servo loops provide improved illumination control. An illumination control system provides precise control of camera operations for photographic and photoplotter applications. Illumination amplifier devices are used in conjunction with electronic control circuits to provide flexibility and precision in camera systems, reducing reliance on prior art mechanical devices.

Illumination control circuits are presented in the form of digital gates and flip-flops and in the form of analog computational elements to provide illumination computer systems. In addition, a batch fabricated illumination computer arrangement is presented for improved implementation of illumination control systems.

Illumination amplifiers are further configured for control of illumination in buildings and automobiles. Various types of devices such as windows, shutters, shades and visors are configured with illumination amplifiers to provide electronic control of illumination.

Batch fabricated display arrangements are provided having an illumination source integral with an illumination amplifier for low cost, small volume, and flexibility. Also, colored display arrangements are provided for control of colors with illumination amplifier devices.

A projection illumination amplifier arrangement is provided having high-intensity large-screen capability and heat transfer design for cooling.

Claims

1. An illumination control system comprising:

an illumination source for generating source illumination;

an illumination filter for generating filtered illumination in response to the source illumination from said illumination source;

an electrical control circuit for generating an electrical control signal;

an illumination control device for controlling the filtered illumination from said illumination filter in response to the electrical control signal from said electrical control circuit; and

cooling means for conducting heat away from said illumination control device.

2. The system as set forth in claim 1 above, wherein said illumination control device includes a liquid crystal device for controlling the filtered illumination in response to the electrical control signal from said electrical control circuit.

3. The system as set forth in claim 1 above, further comprising projection means for generating projected illumination in response to the controlled filtered illumination from said illumination control device.

4. The system as set forth in claim 1 above, wherein said illumination source includes means for generating high intensity source illumination and wherein said illumination control device includes means for generating the controlled filtered illumination as high intensity controlled filtered illumination in response to the high intensity source illumination.

5. The system as set forth in claim 1 above, wherein said illumination source is a high intensity illumination source and wherein the heating of said illumination control device is related to the high intensity illumination from said high intensity illumination source.

6. The system as set forth in claim 1 above, wherein said system is arranged for operating in an environment having a temperature detrimental to operation of said illumination control device and wherein said cooling means provides cooling to permit said illumination control device to operate in the detrimental temperature environment.

7. The system as set forth in claim 1 above, wherein the heating is related to the electrical control signal.

8. The system as set forth in claim 1 above, wherein said cooling means includes means for conducting heat from said illumination control device.

9. The system as set forth in claim 1 above, wherein said cooling means includes means for generating forced air to provide the heat removal.

10. The system as set forth in claim 1 above, wherein said cooling means includes fluid means for providing the heat removal.

11. The system as set forth in claim 1 above, wherein said cooling means includes thermoelectric means for providing the heat removal.

12. The system as set forth in claim 1 above, further comprising contact means for providing a good thermal contact between said cooling means and said illumination control device to provide good heat transfer from said illumination control device to said cooling means.

13. The system as set forth in claim 1 above, wherein said illumination filter includes means for generating the filtered illumination having a higher visibility-to-heat ratio than said source illumination in response to the source illumination from said illumination source;

and wherein said illumination control device includes means for generating the controlled illumination in response to the filtered illumination.

14. The system as set forth in claim 1 above, wherein said cooling means includes fluid cooling means for providing the heat removal.

15. The system as set forth in claim 1 above, wherein said cooling means includes fin means for providing the heat removal with a fin structure.

16. The system as set forth in claim 1 above, wherein said illumination control device includes means for generating the controlled illumination as reflected illumination and wherein said cooling means includes means for providing the heat removal from the back side of said illumination control device.

17. The system as set forth in claim 1 above, wherein said cooling means includes means for circulating fluid within said illumination control device.

18. An illumination control system comprising:

an illumination source for generating source illumination;

an illumination filter for generating filtered illumination having reduced heat content;

an illumination control means for generating reflected illumination from the front side in response to the filtered illumination from said illumination filter; and

cooling means for cooling said illumination control means from the back side.

19. The system as set forth in claim 18 above, wherein said illumination source is a high intensity illumination source for generating the source illumination as high intensity source illumination.

20. The system as set forth in claim 19 above, further comprising projection means for generating projection illumination in response to the reflected illumination.

21. The system as set forth in claim 18 above, wherein said illumination filter includes means for generating the filtered illumination having a better visibility to heat heat ratio tha the source illumination.

22. The system as set forth in claim 18 above, wherein said source is a high intensity source for generating high intensity source illumination and wherein said filter is a heat filter for generating the filtered illumination have reduced heat content.

23. The system as set forth in claim 18 above, wherein said illumination filter includes means for generating the filtered illumination having a visibility-to-heat ratio that is higher than the visibility to heat ratio of said source illumination.

24. The system as set forth in claim 18, above, further comprising means for providing good thermal contact between said illumination control means and said cooling means.

25. The system as set forth in claim 18 above, further comprising thermal bonding means for bonding said cooling means to the back side of said illumination control means, said bonding means having good thermal conductivity.

26. The system as set forth in claim 18 above, further comprising toy means for providing play value in response to the reflected illumination.

27. The system as set forth in claim 18 above, further comprising portable means for providing portable capability, said portable means including battery means for providing a portable power supply;

wherein the reflected illumination is generated in response to excitation provided with said portable power supply.

28. The system as set forth in claim 18 above, further comprising:

projection means for generating projection illumination in response to the reflected illumination from said illumination control means and

means for generating an illumination image larger than the size of said illumination control means in response to the projected illumination.

29. The system as set forth in claim 28 above, wherein said illumination image generating means includes means for providing a large screen audience display.

30. The system as set forth in claim 28 above, wherein said system includes television means for generating a television signal, wherein said illumination control means includes means for generating the reflected illumination in response to the television signal, and wherein said illumination image generating means includes means for generating a television image in response to the television signal responsive reflected illumination.

31. The system as set forth in claim 18 above, wherein said illumination source includes high intensity means for generating the source illumination as high intensity illumination.

32. The system as set forth in claim 18 above, wherein said illumination source includes coherent means for generating the source illumination as coherent source illumination.

33. The system as set forth in claim 18 above, wherein said cooling means is a passive cooling means for removing heat without dissipating electrical power.

34. A display system comprising:

an illumination source for generating source illumination;

an illumination filter for generating filtered illumination in response to the source illumination;

illumination control means for generating reflected illumination from the front side of said illumination control means in response to the filtered illumination, wherein said filtered illumination causes heating of said illumination control means;

cooling means for removing heat from the back side of said illumination control means;

projection means for generating projected illumination in response to the reflected illumination from said illumination control means; and

means for providing an illumination display in response to the projected illumination.

35. The system as set forth in claim 34 above, further comprising thermal bonding means for bonding said cooling means to the back side of said illumination control means;

wherein said thermal bonding means has good heat conductivity for cooling said illumination control means.

36. The system as set forth in claim 34, above, wherein said illumination filter includes means for increasing the visibility-to-heat ratio of the filtered illumination compared to the source illumination.

37. The system as set forth in claim 34 above, wherein said cooling means includes conduction means for conducting heat away from said illumination control means and convection means for removing conducted heat with free air convection.