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Illuminator for directly providing dark field and bright field illumination

  • US 10,216,969 B2
  • Filed: 07/10/2017
  • Issued: 02/26/2019
  • Est. Priority Date: 07/10/2017
  • Status: Active Grant
First Claim
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1. An illuminator comprising:

  • a support frame;

    an optical diffuser connected to the support frame;

    a first plurality of light emitting diodes (LEDs) connected to the support frame, the first plurality of LEDs configured to provide dark field illumination at a high angle of incidence with respect to an object, the first plurality of LEDs further configured to provide illumination to the object without the use of a light pipe, diffuser, or reflector;

    a second plurality of LEDs connected to the support frame, the second plurality of LEDs configured to provide bright field illumination at a low angle of incidence with respect to the object, the second plurality of LEDs further configured to provide illumination to the object without the use of a light pipe, diffuser, or reflector; and

    a third plurality of LEDs connected to the support frame, the third plurality of LEDs configured to provide bright field illumination through the optical diffuser without the use of a light pipe or reflector.

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