A Small Angle Beam Lens Based on Eccentric Light Source

Abstract

The invention discloses a small angle light beam lens based on an eccentric light source. An incident face I, a secondary incident face, an incident face II and a total-reflection face II are arranged at the incident end; an outgoing face IA, an outgoing face IB, an outgoing face IIA and an outgoing face IIB are arranged at the outgoing end; one path of light ray enters from the incident face I, and is emitted out in parallel from the outgoing face IA after being reflected by a total-reflection face IA; and the other path of light ray enters from the incident face II and is emitted out in parallel from the outgoing face IIA after being reflected by the total-reflection face II, and therefore the overall light ray deviates from the lens center line all the time after going out. According to the small angle light beam lens based on the eccentric light source, RGB are uniformly synthesized into white light, and the light spot effect is uniform.

Description

technical field [0001] The invention relates to a small-angle beam lens based on an eccentric light source, which belongs to the technical field of lenses. Background technique [0002] At present, the lenses on the market are designed based on the fact that the center of the light emitting surface of the light source is aligned with the rotation center of the lens. There is no design for the case where the center of the light emitting surface of the light source is not aligned with the rotation center of the lens, but especially in the stage lighting industry Light sources such as RGB three-in-one, RGBW four-in-one, RGBWA five-in-one, etc. are very common. Each light-emitting surface of these light sources is not in the center of the lens and is in an eccentric state. If the rotationally symmetrical lens is designed in the traditional way, each After the monochromatic light passes through the lens, it is not in the center of the spot surface, so the RGB composite white ligh...

AI Technical Summary

Problems solved by technology

[0002] At present, the lenses on the market are designed based on the fact that the center of the light emitting surface of the light source is aligned with the rotation center of the lens. There is no design for the case where the center of the light emitting surface of the light source is not aligned with the rotation center of the lens, but especially in the stage lighting industry Light sources such as RGB three-in-one, RGBW four-in-one, RGBWA five-in-one, etc. are very common. Each light-emitting surface of these light sources is not in the center of the lens and is in an eccentric state. If the rotationally symmetrical lens is designed in the traditional way, each After the monochromatic light passes through the lens, it is not in the center of the spot surface, so the RGB synthetic white light will be very uneven, and the spot effect is very poor.

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