Optical lens assembly configured for near infrared light
AssigneeGenius Electrical Optical (Xiamen) Co., Ltd.
InventorsJinhui Gong, Qingzhi Zhu, Jiali Lian
Life of this patent
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Abstract
An optical lens assembly is provided. A plurality of infrared light beams emitted from a structured light generating unit having a plurality of light sources pass through the optical lens assembly to generate a plurality of light beams. A direction facing the structured light generating unit is a light input side, and an opposite side is a light output side. The optical lens assembly includes a first lens element, a second lens element and a third lens element arranged along an optical axis in a sequence from the light output side to the light input side.
Claims20
An optical lens assembly, configured for a plurality of near infrared light emitted by a structured light generating unit having a plurality of light sources to pass through to generate a plurality of light beams with different angles, the optical lens assembly comprising a first lens element, a second lens element and a third lens element arranged along an optical axis in an order from a light output side to a light input side of the optical lens assembly, and each of the first lens element, the second lens element and the third lens element comprising a light output surface facing the light output side and a light input surface facing the light input side, wherein:
- the optical lens assembly is exclusively configured for the plurality of near infrared light emitted by the structured light generating unit;
- the light input side is defined as a side in a direction facing the structured light generating unit, and the light output side is defined as a side in an opposite direction facing away from the structured light generating unit;
- the light output surface is defined as a surface facing the light output side and the light input surface is defined as a surface facing the light input side;
- the first lens element is arranged to be a lens element in a first order from the light output side to the light input side such that the first lens element is arranged closest to the light output side of the optical lens assembly;
- the light input surface of the first lens element has a concave portion in a vicinity of the optical axis;
- the second lens element is arranged to be a lens element in a second order from the light output side to the light input side, and the light output surface of the second lens element has a convex portion in a vicinity of the optical axis;
- the third lens element is arranged to be a lens element in a third order from the light output side to the light input side,
- wherein the optical lens assembly satisfies:
- HFOV≤20°, and HFOV is a half field of view of the optical lens assembly.
An optical lens assembly, configured for a plurality of near infrared light emitted by a structured light generating unit having a plurality of light sources to pass through to generate a plurality of light beams with different angles, the optical lens assembly comprising a first lens element, a second lens element and a third lens element arranged along an optical axis in an order from a light output side to a light input side of the optical lens assembly, and each of the first lens element, the second lens element and the third lens element comprising a light output surface facing the light output side and a light input surface facing the light input side, wherein:
- the optical lens assembly is exclusively configured for the plurality of near infrared light emitted by the structured light generating unit;
- the light input side is defined as a side in a direction facing the structured light generating unit, and the light output side is defined as a side in an opposite direction facing away from the structured light generating unit;
- the light output surface is defined as a surface facing the light output side and the light input surface is defined as a surface facing the light input side;
- the first lens element is arranged to be a lens element in a first order from the light output side to the light input side such that the first lens element is arranged closest to the light output side of the optical lens assembly;
- the second lens element is arranged to be a lens element in a second order from the light output side to the light input side, and the light output surface of the second lens element has a convex portion in a vicinity of the optical axis;
- the third lens element is arranged to be a lens element in a third order from the light output side to the light input side,
- the light output surface of the third lens element has a concave portion of a periphery of the third lens element;
- wherein the optical lens assembly satisfies:
- HFOV≤20°, and HFOV is a half field of view of the optical lens assembly.
An optical lens assembly, configured for a plurality of near infrared light emitted by a structured light generating unit having a plurality of light sources to pass through to generate a plurality of light beams with different angles, the optical lens assembly comprising a first lens element, a second lens element and a third lens element arranged along an optical axis in an order from a light output side to a light input side of the optical lens assembly, and each of the first lens element, the second lens element and the third lens element comprising a light output surface facing the light output side and a light input surface facing the light input side, wherein:
- the optical lens assembly is exclusively configured for the plurality of near infrared light emitted by the structured light generating unit;
- the light input side is defined as a side in a direction facing the structured light generating unit, and the light output side is defined as a side in an opposite direction facing away from the structured light generating unit;
- the light output surface is defined as a surface facing the light output side and the light input surface is defined as a surface facing the light input side;
- the first lens element is arranged to be a lens element in a first order from the light output side to the light input side such that the first lens element is arranged closest to the light output side of the optical lens assembly;
- the second lens element is arranged to be a lens element in a second order from the light output side to the light input side, and the light output surface of the second lens element has a convex portion in a vicinity of the optical axis;
- the third lens element is arranged to be a lens element in a third order from the light output side to the light input side,
- the light input surface of the third lens element has a convex portion in a vicinity of the optical axis;
- wherein the optical lens assembly satisfies:
- HFOV≤20°, and HFOV is a half field of view of the optical lens assembly.
Dependencies are inferred from the claim text.