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US 10,374,395 B2Granted
Three-color light source
AssigneeSumitomo Electric Industries, Ltd.
InventorHiromi Nakanishi
Life of this patent
Estimating the term…
Abstract
A three-color light source 1 is a three-color light source that combines red, green, and blue laser light so as to output light. The three-color light source 1 includes a red LD 11, a green LD 12, a blue LD 13, a first collimator lens 61, a second collimator lens 62, a third collimator lens 63, a first wavelength filter 81, a second wavelength filter 82, a carrier 30 that is equipped with the LDs 11 to 13, the collimator lenses 61 to 63, and the wavelength filters 81 and 82, and a TEC 40 that is equipped with the carrier 30. The red LD 11 is formed of a GaAs-based material, and the green LD 12 and the blue LD 13 are formed of GaN-based materials.
Claims14
A three-color light source that outputs light by combining red, green and blue laser light, the three-color light source comprising:
- a first laser diode that is formed of a GaAs-based material and emits first laser light;
- a second laser diode that is formed of a GaN-based material and emits second laser light;
- a third laser diode that is formed of a GaN-based material and emits third laser light with a wavelength which is different from that of the second laser light;
- a first collimator lens that collimates the first laser light;
- a second collimator lens that collimates the second laser light;
- a third collimator lens that collimates the third laser light;
- a first wavelength filter that transmits the first laser light which is collimated through the first collimator lens, reflects the second laser light which is collimated through the second collimator lens, and outputs first combined light in which the first laser light and the second laser light are combined;
- a second wavelength filter that performs a one of transmission and reflection on the first combined light, performs an other of transmission and reflection on the third laser light which is collimated through the third collimator lens, and outputs second combined light in which the first combined light and the third laser light are combined;
- a carrier that is equipped with the first to third laser diodes, the first to third collimator lenses, and the first and second wavelength filters,
- wherein the first laser diode is equipped on the carrier via a first sub-mount,
- wherein the second laser diode is equipped on the carrier via a second sub-mount,
- wherein the third laser diode is equipped on the carrier via a third sub-mount, and
- wherein surfaces of the first to third sub-mounts whereon the first to third laser diodes are equipped are substantially orthogonal to a thickness direction of the carrier.
10 more elements
A three-color light source that outputs light by combining red, green and blue laser light, the three-color light source comprising:
- a first laser diode that is formed of a GaAs-based material and emits first laser light;
- a second laser diode that is formed of a GaN-based material and emits second laser light;
- a third laser diode that is formed of a GaN-based material and emits third laser light with a wavelength which is different from that of the second laser light;
- a first collimator lens that collimates the first laser light;
- a second collimator lens that collimates the second laser light;
- a third collimator lens that collimates the third laser light;
- a first wavelength filter that transmits the first laser light which is collimated through the first collimator lens, reflects the second laser light which is collimated through the second collimator lens, and outputs first combined light in which the first laser light and the second laser light are combined;
- a second wavelength filter that performs a first operation on the first combined light, wherein the first operation is selected from a group of operations comprising transmission and reflection, performs a second operation selected from the group of operations on the third laser light which is collimated through the third collimator lens, wherein the second operation is different from the first operation, and outputs second combined light in which the first combined light and the third laser light are combined;
- and
- a carrier that is equipped with the first to third laser diodes, the first to third collimator lenses, and the first and second wavelength filters,
- wherein the first laser diode is equipped on the carrier via a first sub-mount,
- wherein the second laser diode is equipped on the carrier via a second sub-mount,
- wherein the third laser diode is equipped on the carrier via a third sub-mount, and
- wherein surfaces of the first to third sub-mounts whereon the first to third laser diodes are equipped are substantially orthogonal to a thickness direction of the carrier.
11 more elements
A three-color light source that outputs light by combining red, green and blue laser light, the three-color light source comprising:
- a first laser diode that emits first laser light;
- a second laser diode that emits second laser light;
- a third laser diode that emits third laser light with a wavelength which is different from that of the second laser light;
- a first collimator lens that collimates the first laser light;
- a second collimator lens that collimates the second laser light;
- a third collimator lens that collimates the third laser light;
- a first wavelength filter that transmits the first laser light which is collimated through the first collimator lens, reflects the second laser light which is collimated through the second collimator lens, and outputs first combined light in which the first laser light and the second laser light are combined;
- a second wavelength filter that performs a first operation on the first combined light, wherein the first operation is selected from a group of operations comprising transmission and reflection, performs a second operation selected from the group of operations on the third laser light which is collimated through the third collimator lens, wherein the second operation is different from the first operation, and outputs second combined light in which the first combined light and the third laser light are combined;
- and
- a carrier that is equipped with the first to third laser diodes, the first to third collimator lenses, and the first and second wavelength filters,
- wherein the first laser diode is equipped on the carrier via a first sub-mount,
- wherein the second laser diode is equipped on the carrier via a second sub-mount,
- wherein the third laser diode is equipped on the carrier via a third sub-mount, and
- wherein surfaces of the first to third sub-mounts whereon the first to third laser diodes are equipped are substantially orthogonal to a thickness direction of the carrier.
11 more elements
Dependencies are inferred from the claim text.