CN210266799U - Portable multicolor laser lighting system - Google Patents
Portable multicolor laser lighting system Download PDFInfo
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- CN210266799U CN210266799U CN201921353512.0U CN201921353512U CN210266799U CN 210266799 U CN210266799 U CN 210266799U CN 201921353512 U CN201921353512 U CN 201921353512U CN 210266799 U CN210266799 U CN 210266799U
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Abstract
The utility model relates to a portable multicolor laser lighting system, which comprises a laser light source, a light path adjusting device, a light mixing device and a light receiving lens; the laser light source comprises at least three lasers positioned on multiple optical axes and is used for emitting laser beams of at least three colors; the light path adjusting device is used for adjusting the directions of laser beams emitted by the lasers on the multiple light axes and guiding all the laser beams to the light mixing device for light mixing; the light beams mixed by the light mixing device are converged to the light collecting lens to emit light. Because the spectrum of laser is narrow, monochromatic colour purity is high, the colour gamut wide range, through carrying out the light path to multiple colour laser beam after adjusting, directly mix the light on mixing the light device for the light-emitting angle is enough little, forms the even polychrome effect of mixed light, for current portable illumination of laser, can not burn out the interior device of lighting system in addition, need not to consider that the temperature resistance of wavelength converter burns out or the light efficiency reduces consequences such as the wavelength converter that causes when the light intensity is too high.
Description
Technical Field
The utility model relates to a portable lighting technology field, more specifically relates to a portable polychrome laser lighting system.
Background
In portable lighting, flashlights, ceiling lights, emergency lights, table lamps, and the like are used in many applications.
In flashlight applications, the light source uses an LED chip. At present, at the whole application end, the light is collimated by using a reflection cup and also by using a lens, but at the application end of the flashlight, people rarely use a multicolor LED flashlight, and in an LED flashlight system, a plurality of colors are added, so that the phenomena of uneven mixed light and the like caused when the full-power output of the flashlight is realized.
In the LED flashlight, use anti-light cup to carry out the collimation, the effect of illumination facula is relatively poor, and the peripheral round of the facula of actual light-emitting can appear the halo, and this kind of phenomenon can't be directly eliminated through anti-light cup.
When the lens is used for collimation, if the light-emitting angle of the whole flashlight is required to be small and the irradiation distance is required to be long, the image on the surface of the LED can be displayed by the light spot effect, so that the visual experience is not good.
In the field of LED flashlights, most flashlights cannot achieve products with strong collimation, wide CIE color gamut, high color purity and good light mixing effect in multiple colors due to the fact that the limitation of light-emitting aperture is very small.
In laser portable lighting, most of the adopted blue laser light sources and wavelength converters obtain white light with single color. In portable laser lighting, in order to fully exert the advantage of strong collimation of laser, the laser has a small light spot passing through the wavelength converter, the energy is strong, the wavelength converter is easy to burn, and the conversion efficiency of the wavelength converter is reduced when the temperature is high. In laser portable lighting, the more laser light sources are provided, the higher the temperature tolerance requirements of the wavelength converter and the greater the chance of burning out the wavelength converter.
Disclosure of Invention
The utility model aims at overcoming the defect among the above-mentioned prior art, provide a portable polychrome laser lighting system, not only the light-emitting angle is enough little, can form the even polychrome effect of mixed light, for current portable illumination of laser, can not burn out the device in the lighting system moreover, need not to consider that the temperature toleration of wavelength converter burns out or reduces consequence such as the light efficiency of wavelength converter that the wavelength converter that causes when too high with the light intensity.
In order to achieve the purpose, the utility model adopts the technical proposal that: the portable multicolor laser lighting system comprises a laser light source, a light path adjusting device, a light mixing device and a light receiving lens; the laser light source comprises at least three lasers positioned on multiple optical axes and is used for emitting laser beams of at least three colors; the light path adjusting device is used for adjusting the directions of laser beams emitted by the lasers on the multiple light axes and guiding all the laser beams to the light mixing device for light mixing; the light beams mixed by the light mixing device are converged to the light collecting lens to emit light.
The light mixing device and the light receiving lens are arranged oppositely, and all the lasers are uniformly arranged around the light mixing device and the light receiving lens so as to further improve the uniformity of color mixing.
Among the above-mentioned scheme, because the spectrum of laser is narrow, monochromatic colour purity is high, the colour gamut wide range, the laser beam through the multiple colour that sends many lasers carries out the light path and adjusts the back, directly mix the light on mixing the light device, make light-emitting angle enough little, can form the even polychrome effect of mixed light, and for current portable illumination of laser, can not burn the device in the lighting system, the wavelength converter that need not to consider that causes when too high temperature resistance and the light intensity of wavelength converter burns or reduces consequence such as wavelength converter's light efficiency.
Preferably, the optical path adjusting device includes a plurality of reflecting components for reflecting the laser beams emitted from the lasers on the multiple optical axes to the light mixing device. The plurality of reflection assemblies are matched with each other, the direction of the laser beam emitted by the laser light source is changed through reflection, and finally the multicolor laser beam is guided to the light mixing device to be directly mixed.
Further preferably, the optical path adjusting device comprises a reflecting mirror, a transfer reflecting mirror and a total reflecting mirror; the reflectors are arranged in one-to-one correspondence with the lasers and reflect laser beams emitted by the corresponding lasers to the transfer reflectors; the transfer reflector reflects the received laser beam to the light mixing device for light mixing; the total reflection mirror is arranged behind the light mixing device on the light transmission path and is used for reflecting the light beam mixed by the light mixing device to the light mixing device for secondary light mixing; and the light beams subjected to secondary light mixing by the light mixing device are converged to the light collecting lens to emit light. In the multicolor laser lighting system, the light energy at the position of the total reflecting mirror is highest, and the total reflecting mirror can bear high-intensity light intensity, so that the total reflecting mirror is not easy to burn and lose efficacy.
Still preferably, the relay reflector is a total reflection prism for receiving and reflecting the laser beams reflected by all the reflectors to the light mixing device for light mixing. The arrangement can reduce the use of a reflecting device and simplify the light path of the multicolor laser illumination system.
Preferably, the size of the light mixing means is larger than the size of the total reflection mirror. The larger the size of the light mixing device is, the better the size of the light mixing device is, and the larger the size of the light mixing device is, the larger the angle of the light beam can be diffused, so that the better the diffusion effect of the light beam is, and the better the light mixing effect is.
Preferably, the light mixing device is a diffusion sheet, and is used for expanding the light spots of the laser beams into circular light spots to realize light mixing.
Preferably, the light transmission path further includes an optical lens correspondingly disposed behind each laser, and the optical lens is used for collimating the laser beam emitted by the corresponding laser to the optical path adjusting device.
Preferably, the optical system further comprises a light mixing movement structure for moving the position of the light mixing device back and forth on the light transmission path to realize zooming. The stepless zooming effect can be realized by the arrangement, the light mixing device moves back and forth to zoom, and the abnormity of light spot imaging on the wall (the internal device of the lighting system cannot be displayed on the wall) can not occur.
Preferably, the optical system further comprises a light collecting moving structure for moving the light collecting lens back and forth on the light transmission path to realize zooming. When the light mixing device is not adopted to realize zooming, the arrangement can be used, and the focal position of the light receiving lens can also change along with the movement of the position in the process of moving the light receiving lens back and forth, so that the light spots on the wall can present the devices inside the lighting system on the wall in the process of moving the light receiving lens.
In the multicolor laser lighting system, the total reflection prism is a light-tight device, and when the light-receiving lens is moved to zoom, the center of a light spot on the upper wall is a black hole, and no light rays enter the center of the upper wall.
Preferably, the laser light source includes three lasers positioned on three optical axes and emits red light, green light, and blue light, respectively. The three lasers may be arranged in an equilateral triangle.
Laser beams emitted by a plurality of lasers pass through corresponding optical lenses and then are incident on corresponding reflecting mirrors, all the reflecting mirrors reflect the received laser beams to a total reflection prism, the total reflection prism reflects the received laser beams to a diffusion sheet, the diffusion sheet expands light spots of the laser beams into circular light spots so as to realize primary light mixing, the light beams after the primary light mixing are incident to the total reflection mirror and are totally reflected to the diffusion sheet again by the total reflection mirror, the diffusion sheet performs secondary light mixing on the light beams, and the light beams after the secondary light mixing are incident to a light receiving lens and are converged by the light receiving lens to emit light.
Compared with the prior art, the beneficial effects of the utility model are that:
because the spectrum of laser is narrow, monochromatic colour purity is high, the colour gamut wide range, through carrying out the light path to the laser beam of the multiple colour that many lasers sent and adjust the back, directly mix the light on mixing the light device for the light-emitting angle is enough little, can form the even polychrome effect of mixing the light, and for current portable illumination of laser, can not burn the device in the lighting system, need not to consider that the temperature resistance of wavelength converter burns or reduces the light efficiency scheduling consequence of wavelength converter that the wavelength converter that causes when too high with the light intensity burns.
Drawings
Fig. 1 is a diagram illustrating an optical path structure of a portable multi-color laser illumination system according to the present embodiment.
FIG. 2 is a diagram of a laser profile in this embodiment.
FIG. 3 is a spectrum diagram of a polychromatic laser.
Fig. 4 is a CIE diagram of a polychromatic laser.
Fig. 5 is a spectral diagram of a multicolor LED.
FIG. 6 is a CIE diagram of a multicolor LED.
The attached drawings are as follows: 101 a laser; 201 a mirror; 301 total reflection prism; 401 light mixing means; 501 an optical lens; 601 a total reflection mirror; 701 light receiving lens.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; certain well-known structures in the drawings and possible omissions of their description will be apparent to those skilled in the art.
Examples
As shown in fig. 1, the present embodiment provides a portable multi-color laser illumination system, which includes a laser light source, an optical path adjusting device, a light mixing device 401 and a light receiving lens 701; the laser light source comprises at least three lasers 101 positioned on multiple optical axes and used for emitting laser beams of at least three colors; the optical path adjusting device is used for adjusting the directions of the laser beams emitted by the lasers 101 on the multiple optical axes, and guiding all the laser beams to the light mixing device 401 for light mixing; the light beam mixed by the light mixing device 401 is collected to the light collecting lens 701 to be emitted.
Fig. 3 and 4 are a spectrum diagram and a CIE diagram of a multicolor laser, respectively, and fig. 5 and 6 are a spectrum diagram and a CIE diagram of a multicolor LED, respectively, from which it can be seen that a laser has the characteristics of a narrow spectrum, high color purity of a monochromatic color, and a wide color gamut range, compared to an LED. In this embodiment, as shown in fig. 2, the laser light source includes three lasers 101 on three optical axes, and respectively emits red light, green light, and blue light. The three lasers may be arranged in an equilateral triangle.
In this embodiment, the light mixing device 401 and the light receiving lens 701 are disposed opposite to each other, and all the lasers 101 are uniformly disposed around the light mixing device 401 and the light receiving lens 701, so as to further improve the uniformity of color mixing.
In this embodiment, because the spectrum of the laser is narrow, the monochromatic color purity is high, the color gamut range is wide, after the light path adjustment is carried out to the laser beam of the multiple colors that many lasers 101 sent, mix the light on mixing light device 401 directly, make the light-emitting angle enough little, can form the even polychrome effect of mixed light, and for the portable illumination of current laser, can not burn the device in the lighting system, it burns or reduces the light efficiency scheduling consequence of wavelength converter that the temperature resistance that need not to consider that the wavelength converter caused when too high with the light intensity.
The optical path adjusting device includes a plurality of reflecting components for reflecting laser beams emitted from the laser 101 on multiple optical axes to the light mixing device 401. The plurality of reflection assemblies are mutually matched, the direction of the laser beam emitted by the laser light source is changed through reflection, and finally the multicolor laser beam is guided to the light mixing device 401 to be directly mixed.
In this embodiment, the optical path adjusting device includes a reflecting mirror 201, a relay reflecting mirror, and a total reflecting mirror 601; the reflectors 201 are arranged in one-to-one correspondence with the lasers 101 and reflect the laser beams emitted by the corresponding lasers 101 to the transfer reflector; the relay reflector reflects the received laser beam to the light mixing device 401 for light mixing; the total reflection mirror 601 is arranged behind the light mixing device 401 on the light transmission path and is used for reflecting the light beam mixed by the light mixing device 401 to the light mixing device 401 for secondary light mixing; the light beam secondarily mixed by the light mixing device 401 is collected to the light collecting lens 701 to be emitted. In the multi-color laser illumination system, the light energy at the position of the total reflecting mirror 601 is the highest, and the total reflecting mirror 601 can bear high-intensity light intensity, so that the total reflecting mirror 601 is not easy to burn and lose efficacy.
In this embodiment, the transfer reflector is a total reflection prism 301, and is configured to receive and reflect all laser beams reflected by the reflector 201 to the light mixing device 401 for light mixing. The arrangement can reduce the use of a reflecting device and simplify the light path of the multicolor laser illumination system.
In addition, the size of the light mixing device 401 is larger than that of the total reflection mirror 601. The larger the size of the light mixing device 401 is, the better the light mixing device 401 is, and the larger the size of the light mixing device 401 is, the larger the angle of the light beam can be diffused, so that the better the diffusion effect of the light beam is, and the better the light mixing effect is.
In this embodiment, the light mixing device 401 is a diffusion sheet, and is configured to expand the light spots of the laser beam into circular light spots to realize light mixing.
The light transmission path further includes an optical lens 501 disposed behind each laser 101, and the optical lens is used for collimating the laser beam emitted by the corresponding laser 101 to the light path adjusting device.
In addition, a light mixing movement structure for moving the position of the light mixing device 401 back and forth on the light transmission path to realize zooming is also included. The stepless zooming effect can be realized by the arrangement, zooming is performed by moving the light mixing device 401 back and forth, and the abnormity of light spot imaging on the wall (the internal device of the lighting system cannot be displayed on the wall) can be avoided.
In this embodiment, the optical pickup device further includes an optical pickup moving structure for moving the position of the optical pickup lens 701 back and forth on the optical transmission path to achieve zooming. When zooming is not performed by the light mixing device 401, this arrangement can be used, and the focal position of the light receiving lens 701 changes along with the movement of the position during the forward and backward movement of the light receiving lens 701, so that the on-wall light spot can present the devices inside the lighting system on the wall during the movement of the light receiving lens 701.
In the multi-color laser illumination system, the total reflection prism 301 is a light-tight device, and when the light-receiving lens 701 is moved to zoom, the center of the light spot on the upper wall is a black hole, and no light is incident on the center of the upper wall.
Laser beams emitted by the multiple lasers 101 pass through the corresponding optical lenses 501 and then are incident on the corresponding reflectors 201, all the reflectors 201 reflect the received laser beams to the total reflection prism 301, the total reflection prism 301 reflects the received laser beams to the diffusion sheet, the diffusion sheet expands light spots of the laser beams into circular light spots to achieve first light mixing, the light beams after the first light mixing are incident on the total reflection mirror 601 and are totally reflected to the diffusion sheet again by the total reflection mirror 601, the diffusion sheet performs second light mixing on the light beams, and the light beams after the second light mixing are incident on the light receiving lenses 701 and are converged by the light receiving lenses 701.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A portable multi-color laser lighting system is characterized by comprising a laser light source, a light path adjusting device, a light mixing device (401) and a light receiving lens (701); the laser light source comprises at least three lasers (101) positioned on multiple optical axes and used for emitting laser beams of at least three colors; the optical path adjusting device is used for adjusting the directions of laser beams emitted by the lasers (101) on the multiple optical axes and guiding all the laser beams to the light mixing device (401) for light mixing; the light beams mixed by the light mixing device (401) are converged to the light collecting lens (701) to be emitted.
2. A portable multi-color laser illumination system according to claim 1, wherein the optical path adjusting means comprises a plurality of reflecting members for reflecting the laser beams from the lasers (101) located on the plurality of optical axes to the light mixing means (401).
3. A portable multicolor laser illumination system according to claim 2, wherein said optical path adjusting means comprises a reflecting mirror (201), a relay reflecting mirror and a total reflecting mirror (601); the reflectors (201) are arranged in one-to-one correspondence with the lasers (101) and reflect laser beams emitted by the corresponding lasers (101) to the transfer reflectors; the transfer reflector reflects the received laser beam to a light mixing device (401) for light mixing; the total reflection mirror (601) is arranged behind the light mixing device (401) on the light transmission path and is used for reflecting the light beam mixed by the light mixing device (401) to the light mixing device (401) for secondary light mixing; the light beams after secondary light mixing by the light mixing device (401) are converged to the light collecting lens (701) to be emitted.
4. A portable multicolor laser illumination system according to claim 3, wherein the transfer reflector is a total reflection prism (301) for receiving and reflecting the laser beams reflected by all the reflectors (201) to the light mixing device (401) for mixing.
5. A portable multi-color laser illumination system according to claim 3, characterized in that the size of the light mixing means (401) is larger than the size of the total reflection mirror (601).
6. A portable multi-color laser illumination system according to claim 1, wherein the light mixing device (401) is a diffuser for expanding the spots of the laser beam into circular spots to achieve light mixing.
7. A portable multicolor laser illumination system according to claim 1, further comprising an optical lens (501) disposed behind each laser (101) in the light transmission path for collimating the laser beam emitted from the corresponding laser (101) to the light path adjusting device.
8. A portable multi-color laser illumination system according to claim 1, further comprising a light mixing moving mechanism for moving the light mixing device (401) back and forth on the light transmission path to achieve zooming.
9. A portable multicolor laser illumination system according to claim 1, further comprising a light-collecting moving mechanism for moving the position of the light-collecting lens (701) back and forth on the light transmission path to achieve zooming.
10. A portable multi-color laser illumination system according to claim 1, wherein the laser light source comprises three lasers (101) on three optical axes and emitting red, green and blue light, respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353512.0U CN210266799U (en) | 2019-08-20 | 2019-08-20 | Portable multicolor laser lighting system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921353512.0U CN210266799U (en) | 2019-08-20 | 2019-08-20 | Portable multicolor laser lighting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031474A1 (en) * | 2019-08-20 | 2021-02-25 | 广州光联电子科技有限公司 | Portable multi-color laser illumination system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031474A1 (en) * | 2019-08-20 | 2021-02-25 | 广州光联电子科技有限公司 | Portable multi-color laser illumination system |
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