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Autonomous Driving

IP

US7235766

Owner

Sensor Electronic Technology, Inc.

Filing Date

April 23, 2004

Priority Date

April 23, 2003

Portfolio

Seoul Semiconductor - AL & AD

Intro

This system can be used to implement a radar having a variable spectral power distribution, a compact range radar, a phase array radar, etc. To this extent, a radar detecting an incoming target could switch to generate electromagnetic radiation having a shorter wavelength as the target approached, thereby improving the resolution of a target image.

Claims

1. A method of generating electromagnetic radiation, the method comprising: sensing a spectral power distribution of an object to be illuminated; obta...
  1. A method of generating electromagnetic radiation, the method comprising: sensing a spectral power distribution of an object to be illuminated; obtaining a weight and a reflection coefficient for each of a plurality of spectral regions in the spectral power distribution; determining a desired spectral power distribution of the electromagnetic radiation based on the weight and the reflection coefficient for each of the plurality of spectral regions and an efficacy of the electromagnetic radiation for at least one of: viewing the object or imaging the object; and generating the electromagnetic radiation having the desired spectral power distribution, wherein the generating includes adjusting a wavelength of the electromagnetic radiation emitted from an emitting element based on the desired spectral power distribution.
  2. The method of claim 1, further comprising illuminating the object with electromagnetic radiation having a default spectral power distribution.
  3. The method of claim 1, wherein the generating step further includes: emitting electromagnetic radiation from each of a plurality of emitting elements; and mixing the electromagnetic radiation emitted from each of the plurality of emitting elements.
  4. The method of claim 3, wherein the emitting step includes providing a driving current to each of the plurality of emitting elements, and wherein the generating step further includes adjusting at least one of a magnitude of the driving current and a pulse duration of the driving current for any of the emitting elements.
  5. The method of claim 1, further comprising illuminating the object with the generated electromagnetic radiation.
  6. The method of claim 1, further comprising determining a desired intensity time dependence of the electromagnetic radiation based on the sensed spectral power distribution, wherein the generated electromagnetic radiation further includes the desired intensity time dependence.
  7. The method of claim 1, further comprising determining a desired polarization of the electromagnetic radiation based on the sensed spectral power distribution, wherein the generated electromagnetic radiation further includes the desired polarization.
  8. The method of claim 1, further comprising obtaining a distance of the object, wherein the determining is further based on the distance.
  9. The method of claim 1, wherein the desired spectral power distribution provides at least one of: a high resolution or a high contrast for the object.
  10. The method of claim 1, further comprising obtaining a use for the electromagnetic radiation, wherein the determining is further based on the use.
  11. A system for generating electromagnetic radiation, the system comprising: a measurement system for obtaining a characteristic of an object, the measurement system including: a system for sensing a spectral power distribution of the object; and a system for obtaining a weight and a reflection coefficient for each of a plurality of spectral regions in the spectral power distribution; an optimization system for determining a desired spectral power distribution of the electromagnetic radiation based on the weight and the reflection coefficient for each of the plurality of spectral regions and an efficacy of the electromagnetic radiation for at least one of: viewing the object or imaging the object; and an illumination system for generating the electromagnetic radiation having the desired spectral power distribution. 
  12. The system of claim 11, wherein the optimization system further determines a desired intensity time dependence of the electromagnetic radiation based on the sensed spectral power distribution, and wherein the generated electromagnetic radiation further includes the desired intensity time dependence.
  13. The system of claim 11, wherein the optimization system further determines a desired polarization of the electromagnetic radiation based on the sensed spectral power distribution, and wherein the generated electromagnetic radiation further includes the desired polarization.
  14. The system of claim 11, wherein the measurement system includes a sensing element for sensing a property of the object.
  15. The system of claim 11, wherein the illumination system includes a plurality of emitting elements.
  16. The system of claim 15, wherein the illumination system further adjusts at least one of a magnitude and a pulse duration of a driving current provided to any one of the plurality of emitting elements.
  17. The system of claim 15, wherein the illumination effectiveness is maximized for the plurality of emitting elements.
  18. The system of claim 11, wherein the generated electromagnetic radiation comprises a wavelength within the visible spectrum.
  19. The system of claim 11, wherein the generated electromagnetic radiation comprises a wavelength in at least one of an X-Ray spectrum, an infrared spectrum, a microwave spectrum, a millimeter spectrum, and a terahertz spectrum.
  20. The system of claim 11, wherein the desired spectral power distribution is determined to provide at least one of: a high resolution or a high contrast for the object.
  21. The system of claim 11, wherein the measurement system further obtains a distance and wherein the desired spectral power distribution of the electromagnetic radiation is further based on the distance.
  22. The system of claim 11, wherein the measurement system further obtains a use for the electromagnetic radiation, and wherein the desired spectral power distribution is further based on the use.
  23. The system of claim 11, wherein the illumination system comprises a headlight for an automobile.
  24. A system for generating electromagnetic radiation, the system comprising: a measurement system for obtaining a characteristic of an object and a use for the radiation, the measurement system including: a system for sensing a spectral power distribution of the object; and a system for obtaining a weight and a reflection coefficient for each of a plurality of spectral regions in the spectral power distribution; an optimization system for determining a desired attribute of the electromagnetic radiation based on the weight and the reflection coefficient for each of the plurality of spectral regions and the use, wherein the desired attribute comprises at least one of a spectral power distribution, an intensity time dependence, or a polarization and wherein the desired attribute provides at least one of: a high resolution or a high contrast for the object; and an illumination system for generating the electromagnetic radiation having the desired attribute, wherein the illumination system includes an emitting element, and wherein the object is illuminated with the electromagnetic radiation.
  25. The system of claim 24, wherein the emitting element comprises a light emitting diode (LED).
  26. The system of claim 24, wherein the emitting element comprises at least one of an incandescent lamp and a fluorescent lamp.
  27. The system of claim 24, wherein the measurement system includes a sensing element for sensing a property of the object.
  28. The system of claim 24, wherein the illumination system adjusts at least one of a magnitude and a pulse duration of a driving current provided to the emitting element.
  29. The system of claim 24, wherein the measurement system further obtains a distance and wherein the desired spectral power distribution of the electromagnetic radiation is further based on the distance.
  30. An automotive lighting system comprising: a measurement system for sensing a spectral power distribution and obtaining a weight and a reflection coefficient for each of a plurality of spectral regions in the spectral power distribution; an optimization system for determining a desired spectral power distribution of the electromagnetic radiation based on the weight and the reflection coefficient for each of the plurality of spectral regions; and an illumination system for generating light having the desired spectral power distribution.
  31. The system of claim 30, wherein the illumination system comprises a headlight for an automobile.
  32. The system of claim 30, wherein the optimization system automatically adjusts the desired spectral power distribution when the measurement system detects oncoming traffic. 
  33. The system of claim 30, wherein the illumination system includes at least one light emitting diode.  
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Abstract

Method and system for generating electromagnetic radiation wherein one or more attributes of the electromagnetic radiation are adjusted based on a cha...
Method and system for generating electromagnetic radiation wherein one or more attributes of the electromagnetic radiation are adjusted based on a characteristic of the object being illuminated. The object characteristic can be obtained based on a sensed property of the object and used to adjust the attribute(s) of the electromagnetic radiation accordingly.
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Carflix
June 26, 2019

Highly interesting patent!
Applications: Autonomous driving
Companies: Automotive OEM & Tier 1

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