×

Optical device

  • US 9,976,894 B2
  • Filed: 11/16/2016
  • Issued: 05/22/2018
  • Est. Priority Date: 11/17/2015
  • Status: Active Grant
First Claim
Patent Images

1. An optical device comprising:

  • a substrate comprising a front surface;

    an optical emitter chip comprising a front surface and a rear surface, the rear surface of the optical emitter chip affixed to the front surface of the substrate;

    an optical sensor chip comprising a front surface and a rear surface, the rear surface of the optical sensor chip affixed to the front surface of the substrate, the optical sensor chip further comprising at least one main sensor and at least one reference sensor on the front surface of the optical sensor chip;

    an opaque dam disposed on the front surface of the optical sensor chip and at least a portion of the front face of the substrate, the dam separating the main optical sensor and the reference sensor;

    a first transparent encapsulation block encapsulating the optical emitter chip and the reference optical sensor;

    a second transparent encapsulation block encapsulating the main optical sensor; and

    an opaque encapsulation material encapsulating the first transparent encapsulation block and the second transparent encapsulation block, the opaque encapsulation material comprising a first opening above the main optical sensor and a second opening above the optical emitter chip,wherein the opaque encapsulation material extends between the first transparent encapsulation block and the second transparent encapsulation block and abuts the opaque dam.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×