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Filter device, wavelength conversion device, light engine device and projection system

A wavelength conversion device and filtering device technology, applied in the optical field, can solve problems such as poor color accuracy and color reproduction accuracy, and cannot meet users' high color display requirements, so as to reduce the dependence on the light cone angle and alleviate the high color display requirements , High color light effect

Active Publication Date: 2021-05-04
WUXI SEEMILE LASER DISPLAY TECH
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Problems solved by technology

[0004] However, when the light emitted by the light source is incident on the color wheel in the form of a light cone, the larger the angle of the light cone, the worse the color accuracy of the obtained light (that is, the accuracy of color reproduction), and the existing color wheel can no longer meet the requirements. Users' increasing demand for high color display

Method used

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  • Filter device, wavelength conversion device, light engine device and projection system
  • Filter device, wavelength conversion device, light engine device and projection system
  • Filter device, wavelength conversion device, light engine device and projection system

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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the prior art, the color wheel usually forms a 360° circle with filter films of different transmission spectra, and the filter film is planar, that is, the filter surface of the color wheel is a horizontal plane, which is vertical or nearly perpendicular to the optical axis , using a high-speed motor to drive its high-speed operation; the filter diaphragm of the color wheel is located at or near the focus of the converging light in the optical path, so that the incident light is usually incident on the filter di...

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Abstract

The invention provides a filter device, a wavelength conversion device, an optical engine device and a projection system, and relates to the field of optical technology. Both the filter device and the wavelength conversion device use curved surface filter elements, which are different from the flat filter film used in the color wheel in the prior art. Compared with the chip, the surface filter element can reduce the dependence on the angle of the light cone when filtering, improve the color accuracy of the output light, and achieve high-color light output, thereby alleviating the user's high-color display requirements.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a filter device, a wavelength conversion device, a light engine device and a projection system. Background technique [0002] With the development of digital chip technology, projection display is becoming more and more popular in people's life and work. Among them, DLP (Digital Light Processing, digital light processing technology) projection technology uses DMD (Digital Micromirror Device, digital micromirror device) chip analysis. The technical principle of time-separation color is used to realize the display of colors. In DLP technology, the color wheel is a very important time-separation color component. [0003] The color wheel includes filter diaphragms with different transmission spectra, and the output light filtered by the filter diaphragm largely determines the quality of the color displayed by the DLP projector. With the development of displays such as liquid crysta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00G03B21/20
CPCG02B26/008G03B21/204
Inventor 刘金根陈龙刘飞
Owner WUXI SEEMILE LASER DISPLAY TECH
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