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a white light source

A white light source and white light technology, applied in the field of white light source, can solve the problems of high cost, hinder the application of white light source, etc., and achieve the effect of simple structure

Active Publication Date: 2021-12-17
丹阳市朗宁光电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, white light can also be generated through nonlinear optical effects. Supercontinuum spectra are generated by irradiating nonlinear optical media based on ultrashort pulse lasers. At present, high cost is the biggest obstacle hindering the application of this type of white light source.

Method used

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Embodiment 1

[0022] Such as figure 1 As shown, a white light source includes a light source body 100 , a convex lens 200 and a driving laser generating device 300 . The driving laser generating device 300, the convex lens 200 and the light source body 100 are sequentially arranged along the laser emitting path. The light source body 100 includes a porous luminescent medium 101 and a lens body 102. The lens body 102 is a quartz body. The porous luminescent medium 101 is vacuum-sealed and arranged in the lens body 102. The aperture of the porous luminescent medium 101 is 2 to 1000 nm, and the porosity is 0.05 to 0.95 nm. , the pore volume per unit mass is 0.1-5cm 3 / g, the absorption coefficient is 0.5~5cm -1 , because it is a porous material, it has a low thermal conductivity and a high absorption coefficient. Under the irradiation of the driving laser, the porous material will produce a rapid local temperature rise, thereby producing incandescence, and the high thermal stability of the p...

Embodiment 2

[0029] The difference from the first embodiment is that in this embodiment, the thickness of the anti-reflection film is 400-1000 nm. The wavelength band of the laser generating module of the laser generating device 300 is 450nm, and the maximum output power is 20W. The focal length of the convex lens 200 is 5 cm. When the laser power of the laser generator 300 is adjusted to 5hW, the porous luminescent medium 101 starts to generate fluorescence, and when the power increases to 20hW, the porous luminescent medium 101 produces white light. When the laser power is 500hW, the output white light spectrum peak is located near the wavelength of 500nm.

Embodiment 3

[0031] The difference from the first embodiment is that in this embodiment, the material of the porous luminescent medium is a hafnium oxide / carbon composite material. The thickness of the anti-reflection film is 900-1000nm. The laser generating module of the laser generating device 300 is a solid-state laser generating module with a wavelength band of 1 μm and a maximum output power of 50W. The focal length of the convex lens 200 is 5 cm, forming a focal point with a diameter not exceeding 1 mm. When the laser power of the laser generating device 300 is adjusted to 10hW, the porous luminescent medium 101 generates white light. When the laser power is 1W, the output bright white light spectrum peak is located near the wavelength of 650nm.

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Abstract

The invention discloses a white light source, which includes a light source body, a convex lens and a driving laser generating device. The light source body includes a porous luminescent medium and a lens body. The porous luminescent medium is sealed in the lens body. The lens body has A laser incident surface, the driving laser generating device has a laser emitting end capable of outputting near-infrared laser light, and the laser emitted from the laser emitting end acts on the porous luminescent medium after passing through the convex lens and the laser incident surface The porous luminescent medium is made to generate white light. The present invention has beneficial effects: the white light source in the present invention can efficiently generate a supercontinuous white light spectrum covering visible to infrared bands, and the whole set of equipment uses a commercial laser as a driving light source, does not require complex optical elements, and has a simple structure , system temperature and other advantages.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a white light source. Background technique [0002] Wide-band white light sources are widely used in lighting, flat panel display, and spectral detection and other fields. White light can be produced in a variety of ways. For thousands of years, the production of artificial white light has mainly relied on chemical combustion. After the second industrial revolution, the widespread application of electricity and the invention of Edison's electric light symbolized the beginning of modern artificial lighting. So far, electric lights have undergone several replacements, from the first incandescent lamps to the fluorescent lamps that appeared in the 1970s, and then to the white LEDs that have been widely promoted in the 21st century. Every progress brings electricity-to-light conversion. The efficiency has been greatly improved, the lumen efficiency has increased from a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/102H01S3/108H01S5/06
CPCH01S3/108H01S3/102H01S5/0604H01S5/06
Inventor 戎伟明戎玉军王华刘小峰
Owner 丹阳市朗宁光电子科技有限公司