Patent ID: 11942577
Assignee: GRIREM ADVANCED MATERIALS CO., LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC H  C  G | IPC C  G  H

Claim 0:
1. An optical device, comprising an LED chip, a light absorber and/or visible-light luminescent material and a near-infrared luminescent material, wherein a luminous power of light emitted by the near-infrared luminescent material and the light absorber and/or visible-light luminescent material in a band of 650-1000 nm under the excitation of the LED chip is A, and a sum of a luminous power of light emitted by the near-infrared and visible-light luminescent materials in a band of 350-650 nm under the excitation of the LED chip and a luminous power of residual light emitted by the LED chip in the band of 350-650 nm after the LED chip excites the near-infrared and visible-light luminescent materials is B, with B/A*100% being 0.1%-10%.