Projector and wavelength conversion device

Abstract

A projector includes an illumination system having light source device and wavelength conversion device. The light source device provides a first beam. The wavelength conversion device includes wavelength conversion element, light transmissive element, and weighting structure. The wavelength conversion element includes substrate, at least one wavelength conversion region, and through slot. The at least one wavelength conversion region is disposed on the substrate and converts a portion of the first beam into a second beam. The light transmissive element is disposed at the through slot to form a light transmissive region. The remaining portion of the first beam passes through the light transmissive region, and an illumination light beam is constituted by the second beam and the remaining portion of the first beam. The weighting structure is connected to the substrate and has a first joint surface, and the first joint surface and the light transmissive element are jointed. The weighting structure can increase connection area during assemblement of the componenets, thus improving the reliability of the structure.

Description

technical field [0001] The present invention relates to a projector, in particular to a projector with a wavelength conversion device. Background technique [0002] In the current laser projection device, the principle is to use the good luminous efficiency of the laser diode to excite the phosphor to generate the pure color light source required by the projector. Generally, phosphor powder is coated on a substrate to form a phosphor wheel, and then the phosphor powder on the substrate is excited by a laser beam emitted by a laser light source to generate light of different colors. In addition, the laser can also pass through the phosphor wheel directly through the hollow slots on the substrate. The phosphor wheel is driven by the driving motor to rotate, so that the phosphor powder coated on the substrate representing different color areas corresponds to the laser beam emitted by the laser light source, thereby generating corresponding colored light. [0003] Since the ph...

AI Technical Summary

Problems solved by technology

[0003] Since the phosphor wheel is driven by the drive motor, the rotation speed is quite high. If the dynamic balance of the phosphor wheel cannot be ensured, it is easy to generate noise, which will affect the quality of the product and even cause damage to the phosphor wheel.

In addition, phosphor wheels are often detached during high-speed rotation due to insufficient assembly strength. Therefore, how to improve the above problems has become the focus of attention of relevant personnel in the field.

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