Light source system and display equipment
A light source system and excitation light source technology, applied in optics, instruments, projection devices, etc., can solve problems such as low light efficiency and divergence of emitted light beams, and achieve the effect of improving the low utilization rate
Active Publication Date: 2020-02-28
APPOTRONICS CORP LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the technical problem that the light beam emitted by the light source system in the prior art diverges and the subsequent light efficiency is low, it is necessary to provide a light source system with high light efficiency
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0063] Generally, under the condition of high energy density excitation light, the wavelength conversion device of the optical system needs to be made in the form of a rotating color wheel with fluorescent powder to solve the problem of scattering. As an option, a reflective long conversion device is generally used, which has Withstand the advantages of high energy density and small dispersion of light spots. However, since the light beam emitted by the light source system generally has a certain divergence characteristic, the spot area gradually increases with the increase of the light path, resulting in adverse effects on subsequent light effects. Especially when the light source system is used in a projector, the light machine of the projector generally adopts a uniform light device (including but not limited to a fly-eye lens, a fly-eye lens pair, and a light uniform rod) to perform uniform light shaping on the output light of the light source system, If the divergence ang...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A light source system (200), comprising an excitation light source (201), a scattering device (207), a wavelength conversion device (209), a light splitting / converging device (205) and a relay lens (210). The light splitting / converging device (205) is used to guide a first part of excitation light sent from the excitation light source (201) to the scattering device (207) and to guide a second part of excitation light sent from the excitation light source (201) to the wavelength conversion device (209); the scattering device (207) is used to scatter the first part of the excitation light and then supply to the light splitting / converging device (205); the light splitting / converging device (205) is also used to guide the scattered first part of the excitation light to a light exiting channel; the wavelength conversion device (209) is used to convert the second part of the excitation light to an excited light which is then supplied to the light splitting / converging device (205); the light splitting / converging device (205) is also used to guide the excited light to the light exiting channel; the relay lens (210) is provided inside the light exiting channel, and is used to focus the scattered first part of the excitation light and the excited light sent by the light splitting / converging device (205). Also provided is a display device.
Description
technical field [0001] The invention relates to a light source system and a display device. Background technique [0002] At present, laser light sources have been widely used in display (such as projection) and lighting fields. Due to the advantages of high energy density and small etendue, laser light sources have gradually replaced bulbs and LEDs in the field of high-brightness light sources. light source. Among them, the light source system that uses the excitation light source to excite the phosphor to generate the required light (such as the blue light laser to excite the yellow phosphor to generate white light) has become the mainstream of application due to its advantages of high light efficiency, good stability, and low cost. However, the above-mentioned optical system may cause the beam to diverge due to the fact that the outgoing beam has a certain emission angle and the transmission optical path is long, resulting in a low utilization rate of the beam by the sub...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/208G03B21/20
Inventor 郭祖强胡飞李屹
Owner APPOTRONICS CORP LTD