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US 11,942,577 B2Granted
Optical device
AssigneeGrirem Advanced Materials Co., Ltd.
InventorsRonghui Liu, Yuanhong Liu, Yanfeng Li, Xiaoxia Chen, Xiaole Ma, Yuan Xue
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AssigneeGrirem Advanced Materials Co., Ltd.
InventorsRonghui Liu, Yuanhong Liu, Yanfeng Li, Xiaoxia Chen, Xiaole Ma, Yuan Xue
Estimating the term…
An optical device includes 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%. According to the implementation where the optical device employs the LED chip to combine the near-infrared luminescent material and the light absorber and/or visible-light luminescent material simultaneously.
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%.
Dependencies are inferred from the claim text.