Fluorescent wheel system, projector and light collimation and convergence method

Abstract

The embodiment of the invention discloses a fluorescent wheel system, a projector and a light collimation and convergence method, which relates to the field of the projectors and can effectively improve the brightness of a light source. The fluorescent wheel system disclosed by the embodiment of the invention comprises a fluorescent wheel, an optical lens and at least one optical collimation part, wherein the optical lens is assembled in front of the fluorescent wheel, the fluorescent wheel comprises a baseplate and a fluorescent powder layer which is annularly coated on the baseplate, the optical lens is used for converging light generated by the fluorescent powder layer after the light is excited, and the optical collimation part is used for collimating the light which is converged and passes through the optical lens.

Description

technical field [0001] The invention relates to the field of projectors, in particular to a fluorescent wheel system, a projector using the fluorescent wheel system and a method for collimating and converging light. Background technique [0002] With the development of technology, projection display products currently on the market are developing in the direction of smaller and smaller volume and higher brightness. Since most of the new solid-state light source projectors use fluorescent light sources, that is, the fluorescent powder is coated on the circular area of ​​the circular metal substrate. On the phosphor powder of the wheel, the phosphor powder is stimulated to emit light of the corresponding color. Since the phosphor powder emits 360 degrees in the near space, it is difficult to collect light energy, and the low utilization rate of light energy eventually leads to insufficient brightness of the light source of the projector. [0003] In order to increase the bri...

AI Technical Summary

Problems solved by technology

[0004] The current technical solution is to assemble the beam shaping lens group and the fluorescent wheel independently, but the distance between the lenses of the lens group and the fluorescent wheel is difficult to control precisely and the distance is usually more than 1mm

Therefore, in the optical design, the converging excitation spot is relatively large, which increases the etendue of the stimulated emission light, which brings great difficulty to the subsequent optical design. The distance between the two leads to only part of the light energy can be received, and the distance that cannot be precisely controlled leads to unstable reception efficiency

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