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Flash lamp based on semiconductor laser

A laser and semiconductor technology, applied in the field of flash, can solve the problems of small range, low luminous power, distant objects and scenery fill light, etc., to achieve the effect of long working distance and large luminous flux

Pending Publication Date: 2020-02-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the internal light source of general-purpose flashlights usually uses blue LED as the light source, but it has the problems of low luminous power, limited output light, and small range. In addition, because LED is a Lambertian light source, its light is dispersed, which further reduces the range of the flashlight.
Especially in recent years, telephoto lenses have been widely used on mobile phones and other terminals. It is difficult for traditional LED flashlights to supplement light for distant objects and scenery, making telephoto lenses ineffective when shooting distant dark scenes.
In addition, flashes that use blue LEDs as light sources usually have poor color rendering

Method used

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  • Flash lamp based on semiconductor laser

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Embodiment Construction

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0016] The semiconductor laser-based flash lamp according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0017] figure 1 It is a structural schematic diagram of a semiconductor laser-based flash lamp according to an embodiment of the present invention.

[0018] Such as figure 1 As shown, the semiconductor laser-based flashlight 10 includes: a semiconductor laser 100 , a sapphire fluorescent plate 200 , a reflector 300 and a Fresnel lens 400 .

[0019] Wherein,...

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Abstract

The invention discloses a flash lamp based on a semiconductor laser, which comprises a semiconductor laser, a sapphire fluorescent plate, a reflector and a Fresnel lens, wherein the sapphire fluorescent plate is arranged in front of the semiconductor laser and used for converting blue laser emitted by the semiconductor laser into white light; and the reflector is arranged in front of the sapphirefluorescent plate and used for reflecting the white light to the Fresnel lens and scattering the white light. The flash lamp has the advantages of high light effects, high power, long service life, energy conservation, good color rendering, long range and the like, and can realize larger luminous flux and longer working distance.

Description

technical field [0001] The invention relates to the technical field of flash lamps, in particular to a flash lamp based on a semiconductor laser. Background technique [0002] Flash is a light source that can emit strong light in a short period of time. It is mostly used for instant lighting in dark places, and it is also used for partial fill light in bright places. It is small in appearance, safe to use, easy to carry and stable in performance. As a light, small, stable and safe light source, the flash is widely used in photosensitive photography accessories, embedded in mobile phones, camera lights and other equipment. It is used for lighting or photography in scenes with insufficient visibility such as at night. [0003] Nowadays, the internal light source of general flashlight usually adopts blue LED as the light source, but it has the problems of low luminous power, limited output light, and small range. In addition, because LED is a Lambertian light source, the ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B15/05
CPCG03B15/05G03B2215/0589
Inventor 汪莱王磊郝智彪罗毅
Owner TSINGHUA UNIV
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