A laser light source structure and projection optical system
A laser light source, excitation light source technology, applied in the optical field, can solve problems such as eye damage
Active Publication Date: 2022-07-15
WUXI SEEMILE LASER DISPLAY TECH
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Problems solved by technology
[0003] At present, the optical path of the light source of LCD laser light source products on the market usually forms white light by coupling the blue light emitted by the blue laser with the wavelength-converted laser light, and then makes the white light incident into the optical machine system; the laser light source structure of this structure, Compared with the DLP projection system, it reduces the damage of blue light to human eyes; however, because there are still short-wave blue light components in the blue light used for display, it is still easy to cause damage to the user's eyes during use
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[0045] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention. Based on the embodiments of the present invention, those of ordinary skill in the art will not make creative work on the premise All other embodiments obtained below belong to the protection scope of the present invention.
[0046] In the description of the present invention, it should be understood that the terms "first" and "second" are only used to simplify the description, and should not be interpreted as indicating or implying relative importance, or implying the num...
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Abstract
The present invention provides a laser light source structure and a projection optical system. The laser light source structure includes an excitation light source, a first light splitting and combining element, a first wavelength conversion device, a second wavelength conversion device, and an optical machine arranged in an optical path; wherein , the excitation light source is used to emit excitation light; a part of the excitation light is guided by the first light splitting and combining element to the first wavelength conversion device to generate a first received laser light; another part of the excitation light is guided by the The first light splitting and combining element is guided to the second wavelength conversion device to generate a second received laser light; the first received laser light and the second received laser light are combined under the guidance of the first light splitting and combining element, respectively. , which exits to the optomechanical. In the laser light source structure provided by the invention, the excitation light is divided into two parts, and the two parts of the excitation light are respectively converted into laser light with a wavelength greater than that of the short-wave blue light and then combined to remove the short-wave blue light in the light source.
Description
technical field [0001] The present invention relates to the field of optical technology, and in particular, to a laser light source structure and a projection optical system. Background technique [0002] Laser light source has the advantages of high brightness, good color, low energy consumption, long life and small size, and has been widely used in the optical field; with the rapid development of the laser projection industry, people's requirements for the brightness and color of laser projectors have gradually increased At the same time, it also began to pay attention to the impact of the use of laser projection on human health. [0003] At present, the light source light path of LCD laser light source products on the market usually forms white light by coupling the blue light emitted by the blue laser and the received laser light after wavelength conversion, and then the white light is incident into the opto-mechanical system; the laser light source structure of this str...
Claims
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IPC IPC(8): G03B21/20G02B27/10
CPCG03B21/2033G03B21/204G03B21/208G02B27/10
Inventor 刘金根陈龙刘飞
Owner WUXI SEEMILE LASER DISPLAY TECH