Light source system and projection device
A technology of light source system and projection equipment, applied in the field of light source, can solve the problems of laser loss, low optical efficiency, etc.
Pending Publication Date: 2019-04-02
APPOTRONICS CORP LTD
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Problems solved by technology
[0003] Since the excitation light emitted by the light source and the scattered excitation light emitted by the wavelength conversion device are in the opposite direction on the optical path, but the spectra of the two overlap, so the difference in etendue of the two is usually used to split the light by using a regional coating. The method not only leads to the loss of laser light, but also has low optical efficiency, and the regional coating will also bring about the problem of color uniformity
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[0022] see figure 1 , figure 1 It is a schematic structural diagram of the light source system 100 provided by a preferred embodiment of the present invention. The projection device includes a light source system 100 and an optical-mechanical system 600 . The light emitted by the light source system 100 passes through the optical-mechanical system 600 and then exits the projection device.
[0023] In this embodiment, the optomechanical system 600 includes a fly-eye lens, and the number of microlens units in the fly-eye microlens covered by the incident light determines the uniformity of the outgoing light, and the fly-eye microlens array also has a certain angle to the incident light. Accommodate range. If the incident angle of the light is too large, so that the focal point of the light exceeds the aperture range of the corresponding microlens and enters the adjacent microlens aperture, the brightness of the central spot emitted by the fly eye lens is reduced, the outline ...
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The invention provides a light source system and a projection device. The light source system comprises: an excitation light source, a wavelength conversion device, a guiding device and an adjusting device, wherein the excitation light source is used to generate excitation light; the guiding device is configured to guide the excitation light to be incident into the wavelength conversion device; the wavelength conversion device comprises a conversion region for converting wavelengths of the excitation light and emitting first light along a first optical path, and a non-conversion region for scattering the excitation light and emitting second light along a second optical path, and the wavelength conversion device sequentially emits the first light and the second light; the adjusting device is configured to adjust the propagation direction and an exit angle of the second light and guide the second light after the exit angle is regulated to the guiding device; and the guiding device is configured to guide the first light and the second light emitted by the wavelength conversion device, and the exit angles of the first light and the second light emitted from the guiding device are bothsmaller than an angle threshold.
Description
technical field [0001] The invention relates to the field of light source technology, in particular to a light source system and projection equipment. Background technique [0002] In the field of projection technology, a laser irradiation wavelength conversion device is usually used to obtain the received light and the scattered excitation light, and then the received light and the scattered excitation light are combined. [0003] Since the excitation light emitted by the light source and the scattered excitation light emitted by the wavelength conversion device are in the opposite direction on the optical path, but the spectra of the two overlap, so the difference in etendue of the two is usually used to split the light by using a regional coating. This method not only leads to the loss of laser light, but also reduces the optical efficiency, and the regional coating also brings about the problem of color uniformity. Contents of the invention [0004] In view of this, t...
Claims
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Login to View More IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/20
Inventor 郭祖强杜鹏李屹
Owner APPOTRONICS CORP LTD