WO2020248560A1 - Laser flashlight optical system having multiple optical axes, and laser flashlight - Google Patents

Laser flashlight optical system having multiple optical axes, and laser flashlight Download PDF

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Publication number
WO2020248560A1
WO2020248560A1 PCT/CN2019/125975 CN2019125975W WO2020248560A1 WO 2020248560 A1 WO2020248560 A1 WO 2020248560A1 CN 2019125975 W CN2019125975 W CN 2019125975W WO 2020248560 A1 WO2020248560 A1 WO 2020248560A1
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Prior art keywords
laser
optical
optical system
light
conversion device
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PCT/CN2019/125975
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French (fr)
Chinese (zh)
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陈国平
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广州光联电子科技有限公司
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Publication of WO2020248560A1 publication Critical patent/WO2020248560A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the optical system further includes a flat optical glass sheet or a diffusion sheet with a light-scattering function, and the flat optical glass sheet or a diffusion sheet with a light-scattering function is arranged perpendicular to the second optical axis and used for installing the shielding structure.
  • the optical glass flat sheet or the diffuser sheet with the function of scattering light facilitates the installation and fixation of the shielding structure, and does not block the light, which facilitates the emission of the illuminating light.
  • Figure 1 is a schematic diagram of a laser flashlight optical system with multiple optical axes in Embodiment 1.
  • this embodiment provides a laser flashlight optical system with multiple optical axes, including an incident optical system, a wavelength conversion device 901, and an exit optical system;
  • the incident optical system includes a laser 201 and an optical reflector 401,
  • the laser 201 is used to emit blue excitation light, and an optical reflector 401 is used to reflect the blue excitation light once to fold the beam to form a multi-optical axis and guide the folded blue excitation light to the wavelength conversion device 901;
  • wavelength conversion device 901 is a Lambertian scatterer and is used to absorb part of the excitation light to form a received laser;
  • the received laser and the excitation light not absorbed by the wavelength conversion device 901 form the illumination light which is emitted by the exit optical system;
  • the blue excitation light emitted by the laser 201 is located in the first
  • the optical axis 701 and the second optical axis 702, which is an emission optical axis of the illumination light, are parallel and staggered.
  • the wavelength conversion device 901 is a Lambertian scatterer
  • the blue excitation light emitted by the laser 201 enters the wavelength conversion device 901 at any angle and is partially absorbed by it to form a received laser, which is excited by the laser and not absorbed by the wavelength conversion device 901
  • the light forms illumination light, and the illumination light is equivalent to a Lambertian luminous body.
  • the incident optical system further includes a first small lens 301 arranged between the laser 201 and the optical reflector 401, and the first small lens 301 is used to focus the divergent blue excitation light emitted by the laser 201.
  • This arrangement enables the excitation light to be focused on the wavelength conversion device 901 via the incident optical system, and during the laser transmission process, the cross-sectional area of the blue excitation beam at the position of the optical reflector 401 can be reduced, thereby reducing the area of the optical reflector 401 .
  • a second small lens 501 is provided between the optical reflector 401 and the wavelength conversion device 901 along the light propagation direction, and both the incident optical system and the exit optical system include the second small lens 501.
  • the blue excitation light reflected by the optical reflector 401 is incident on the wavelength conversion device 901 from the edge area of the second small lens 501 with a large field of view angle range; this arrangement is convenient for focusing the blue excitation light on the wavelength conversion device 901 , So that the wavelength conversion device 901 absorbs part of the excited light formed by the laser light and the unabsorbed excitation light to synthesize high-energy density illumination light.
  • the optical system further includes a flat optical glass sheet 1001 or a diffusion sheet with a light-scattering function, and the flat optical glass sheet 1001 or a diffusion sheet with a light-scattering function is arranged perpendicular to the second optical axis 702 and used for installing the shielding structure 801.
  • the optical glass flat sheet 1001 or the diffuser sheet with the function of scattering light facilitates the installation and fixation of the shielding structure 801 without blocking the light, which facilitates the emission of the illumination light.
  • the wavelength conversion device 901 is a yellow phosphorous phosphor sheet.
  • the yellow phosphorous phosphor is excited by part of the excitation light to form a laser.
  • This embodiment also provides a laser flashlight with multiple optical axes, including a barrel body and a barrel head.
  • the barrel head is equipped with the above-mentioned optical system; the barrel body is provided with a battery for providing power to the laser, and the barrel body is provided with control Switch for turning the laser on and off.
  • the setting of the switch is convenient to turn on and turn off the flashlight.
  • This embodiment provides another laser flashlight optical system with multiple optical axes, as shown in FIG. 2, including the incident optical system, the wavelength conversion device 901, and the exit optical system described in Embodiment 1; it is the same as that of Embodiment 1.
  • the difference is that there are multiple incident optical systems and are arranged around the wavelength conversion device 901; and the overall structure formed by the optical reflectors 401 in all incident optical systems and the wavelength conversion device 901 are provided with a second small lens 501, the incident optical system Both the exit optical system and the exit optical system include the second small lens 501.
  • This embodiment can be used to achieve high-efficiency long-distance or ultra-long-distance lighting, while reducing the risk of using high-power laser technology, and the flashlight is small in size.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Semiconductor Lasers (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A laser flashlight optical system having multiple optical axes, and a laser flashlight. The optical system comprises an incident optical system, a wavelength conversion device (901) and an emission optical system; the incident optical system comprises a laser (201) and an optical reflector (401), the laser (201) being used for emitting excitation light, and the optical reflector (401) being used for reflecting the excitation light once so as to fold light beams to form multiple optical axes and guide the folded excitation light to the wavelength conversion device (901); the wavelength conversion device (901) is a Lambertian-type scatter and is used for absorbing a part of excitation light to form excited light; illumination light formed by the excited light and the excitation light which is not absorbed by the wavelength conversion device (901) is emitted by the emission optical system; and a first optical axis (701) where the excitation light emitted by the laser (201) is located and a second optical axis (702) which is the emission optical axis of the illumination light are provided in parallel and staggered with each other. The optical reflector (401) enables excitation light to enter the wavelength conversion device (901) after being folded by means of a multi-optical axis optical path, so as to form illumination light, thereby achieving a high-efficiency and long-distance illumination effect, reducing the risk of using a high-power laser technology, and reducing the size of a flashlight.

Description

一种存在多光轴的激光手电筒光学***及激光手电筒Laser flashlight optical system with multiple optical axes and laser flashlight 技术领域Technical field
本发明涉及手电筒技术领域，更具体地，涉及一种存在多光轴的激光手电筒光学***及激光手电筒。The present invention relates to the technical field of flashlights, and more specifically, to a laser flashlight optical system with multiple optical axes and a laser flashlight.
背景技术Background technique
手持式照明设备又称为手电筒，由于其具有非常好的便携的可移动性，在许多户外及其他特种应用场合得到广泛使用，如户外登山、探险、警用搜救、小空间照明等场景。Hand-held lighting equipment is also called a flashlight. Because of its very good portability and mobility, it is widely used in many outdoor and other special applications, such as outdoor mountaineering, expeditions, police search and rescue, small space lighting and other scenes.
这种手持式的照明设备通常又由筒体及筒头组成，筒体内置供电电池，筒头上设有特定的发光器件，应用于手电筒的发光器件，最为传统的是小功率的卤素灯泡，这类光源显色好，但亮度及效率不具优势，而且寿命短是其致命的缺点。其次是近些年流行起来的半导体照明LED，LED作为新兴的光源，发光效率高、寿命长、稳定性好，在各应用领域有取而代之传统光源的趋势。但由于应用于手电筒领域，其要求便携性的极高要求，无论是传统的卤素灯还是LED光源，都不是理想的点光源，这给应用于手电筒领域的二次光学增加不少难度，给手电筒的体积带来不利因素。This kind of handheld lighting equipment is usually composed of a barrel and a barrel head. The barrel has a built-in power supply battery. The barrel head is equipped with a specific light-emitting device. It is used in the light-emitting device of a flashlight. The most traditional is a low-power halogen bulb. This kind of light source has good color rendering, but its brightness and efficiency have no advantages, and its short life span is its fatal disadvantage. The second is the semiconductor lighting LED that has become popular in recent years. As a new light source, LED has high luminous efficiency, long life, and good stability. It has a trend of replacing traditional light sources in various application fields. However, due to its application in the flashlight field, it requires extremely high requirements for portability. Whether it is a traditional halogen lamp or an LED light source, it is not an ideal point light source. This adds a lot of difficulty to the secondary optics used in the flashlight field. The volume brings disadvantages.
所以更新型的半导体激光技术的发展应用又给新型手电筒带来新机，由于半导体激光器的极好的方向性，接近于点光源作为理想光源，且激光具有高亮度的特性，所以在应用于手电筒这种指向性照明的应用领域的优势尤其突出。基于激光器的这两个特点，可以大大地缩小手电筒的体积及使光照射距离更远。Therefore, the development and application of newer semiconductor laser technology has brought new machines to new flashlights. Due to the excellent directivity of semiconductor lasers, it is close to the point light source as an ideal light source, and the laser has high brightness characteristics, so it is used in flashlights. The advantages of this directional lighting application field are particularly prominent. Based on these two characteristics of the laser, the volume of the flashlight can be greatly reduced and the light irradiation distance can be longer.
但激光存在的另一个问题就是激光的安全问题，也正是由于激光的高亮度特性，其能量密度非常地高，在使用如此大功率的激光器时，由于使用不慎容易对相关人员的眼睛或皮肤造成严重的伤害，甚至引起火灾、烫伤等严重的伴随伤害，尤其是对使用者眼睛不可逆转的伤害，所以在使用大功率激光时需要尤其谨慎。However, another problem with lasers is the safety of lasers. It is precisely because of the high-brightness characteristics of lasers that its energy density is very high. When using such high-power lasers, it is easy to cause damage to the eyes or eyes of relevant personnel due to careless use. The skin can cause serious injuries, even fire, burns and other serious accompanying injuries, especially irreversible damage to the user’s eyes, so you need to be especially careful when using high-power lasers.
技术问题technical problem
本发明旨在克服上述现有技术中的缺陷，提供一种存在多光轴的激光手电筒光学***，包括该光学***的手电筒充分利用激光极好方向性和极高亮度的特点实现高效率远距离照明的同时，大大地降低了使用大功率激光技术的风险，且手电筒体积小。The present invention aims to overcome the above-mentioned defects in the prior art and provide a laser flashlight optical system with multiple optical axes. The flashlight including the optical system makes full use of the laser’s excellent directivity and extremely high brightness to achieve high efficiency and long distance At the same time of lighting, the risk of using high-power laser technology is greatly reduced, and the flashlight is small in size.
技术解决方案Technical solutions
为达到上述目的，本发明采取的技术方案是：提供一种存在多光轴的激光手电筒光学***，包括入射光学***、波长转换装置及出射光学***；入射光学***包括激光器及一个光学反射器，激光器用于发出激发光，一个光学反射器用于对激发光进行一次反射以折叠光束形成多光轴并引导折叠后的激发光至波长转换装置；波长转换装置为朗伯型散射体并用于吸收部分激发光形成受激光；受激光和未被波长转换装置吸收的激发光形成照明光由出射光学***出射；激光器发出的激发光所在第一光轴和作为照明光的出射光轴的第二光轴平行并错开设置。To achieve the above objective, the technical solution adopted by the present invention is to provide a laser flashlight optical system with multiple optical axes, including an incident optical system, a wavelength conversion device, and an exit optical system; the incident optical system includes a laser and an optical reflector, The laser is used to emit excitation light, and an optical reflector is used to reflect the excitation light once to fold the beam to form a multi-optical axis and guide the folded excitation light to the wavelength conversion device; the wavelength conversion device is a Lambertian scatterer and is used for the absorption part The excitation light forms the received laser; the received laser and the excitation light not absorbed by the wavelength conversion device form the illuminating light, which is emitted by the exit optical system; the excitation light emitted by the laser is located on the first optical axis and the second optical axis as the exit optical axis of the illuminating light Parallel and staggered settings.
由于波长转换装置为朗伯型散射体，所以激光器发出的激发光以任何角度进入波长转换装置后被其部分吸收形成受激光，受激光和未被波长转换装置吸收的激发光形成照明光，且该照明光相当于朗伯型发光体。Since the wavelength conversion device is a Lambertian scatterer, the excitation light emitted by the laser enters the wavelength conversion device at any angle and is partially absorbed by it to form a received laser. The received laser and the excitation light not absorbed by the wavelength conversion device form the illumination light, and This illuminating light corresponds to a Lambertian luminous body.
定义手电筒长度方向为纵向，与纵向垂直方向为横向；激光器发出的激发光所在第一光轴和作为照明光的出射光轴的第二光轴平行并错开设置使得激光器发出的激发光为纵向，进而使得激光器的设置不会使手电筒横向尺寸比原来大很多。The length direction of the flashlight is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction is the transverse direction; the first optical axis of the excitation light emitted by the laser and the second optical axis as the emission axis of the illumination light are parallel and staggered so that the excitation light emitted by the laser is longitudinal. Furthermore, the setting of the laser will not make the lateral size of the flashlight much larger than the original.
上述方案中，一个光学反射器的反射作用使得激发光通过多光轴光路的折叠后进入波长转换装置，经波长转换装置后形成的照明光由出射光学***出射，实现高效率远距离的照明效果，由于激光器发出的激发光所在第一光轴和作为照明光的出射光轴的第二光轴平行并错开设置，大大地降低了使用大功率激光技术的风险，同时使得手电筒横向尺寸不会比原来大很多，且激光接近点光源使得手电筒体积小；另外，使用一个光学反射器对光束进行反射以折叠光束相比于使用多个光学反射器，提高光学效率的同时降低手电筒设计复杂程度。In the above scheme, the reflection effect of an optical reflector makes the excitation light enter the wavelength conversion device after being folded by the multi-optical axis optical path, and the illuminating light formed after the wavelength conversion device is emitted by the exit optical system to achieve high-efficiency long-distance lighting effects Because the first optical axis of the excitation light emitted by the laser is parallel and staggered with the second optical axis as the exit optical axis of the illumination light, the risk of using high-power laser technology is greatly reduced, and the lateral size of the flashlight is not comparable The original size is much larger, and the laser is close to the point light source, which makes the flashlight small; in addition, using an optical reflector to reflect the beam to fold the beam is compared to using multiple optical reflectors, which improves optical efficiency while reducing the complexity of flashlight design.
优选地，所述入射光学***还包括设于激光器和光学反射器之间的第一小透镜，第一小透镜用于将激光器发出的发散蓝色激发光进行聚焦。这样设置使得激光在传输过程中，能减小在光学反射器位置的蓝色激发光束的截面积，进而缩小光学反射器的面积。Preferably, the incident optical system further includes a first small lens arranged between the laser and the optical reflector, and the first small lens is used to focus the divergent blue excitation light emitted by the laser. This arrangement makes it possible to reduce the cross-sectional area of the blue excitation beam at the position of the optical reflector during laser transmission, thereby reducing the area of the optical reflector.
进一步优选地，沿光传播方向在光学反射器与波长转换装置之间设有第二小透镜，入射光学***及出射光学***均包括所述第二小透镜。经光学反射器反射后的蓝色激发光以大视场角度范围从第二小透镜的边缘区域入射到波长转换装置上；这样设置便于将蓝色激发光聚焦于波长转换装置上，以便于波长转换装置吸收部分激发光形成的受激光与未吸收的激发光合成高能量密度的照明光。Further preferably, a second small lens is provided between the optical reflector and the wavelength conversion device along the light propagation direction, and both the incident optical system and the exit optical system include the second small lens. The blue excitation light reflected by the optical reflector is incident on the wavelength conversion device from the edge area of the second small lens in a large field of view; this arrangement is convenient for focusing the blue excitation light on the wavelength conversion device to facilitate the wavelength The conversion device absorbs the received laser light formed by part of the excitation light and the unabsorbed excitation light to synthesize high-energy density illumination light.
更进一步优选地，出射光学***还包括设于光出射方向最外部的出光透镜；波长转换装置位于出光透镜与第二小透镜的组合焦点上；受激光和未被波长转换装置吸收的激发光经由第二小透镜及出光透镜准直后形成***行的照明光出射。可根据使用需求选择不同的出光透镜尺寸及参数进行搭配，以变换该照明***的照射角度，实现远近距离变化的需求。More preferably, the exit optical system further includes a light exit lens arranged at the outermost part of the light exit direction; the wavelength conversion device is located at the combined focal point of the light exit lens and the second small lens; the laser light and the excitation light not absorbed by the wavelength conversion device pass through The second small lens and the light emitting lens are collimated to form a nearly parallel illuminating light to emit. Different light-emitting lens sizes and parameters can be selected according to the use requirements to change the illumination angle of the lighting system to achieve the needs of long and short distance changes.
优选地，沿蓝色激发光出射方向在光学反射器后设有遮挡结构。遮挡结构可为挡片，这样设置能规避在使用过程中光学***的损坏或意外使用，或激光传导过程中各光学元器件的烧损导致原蓝色激发光直接射出等使用风险，以防止激光手电筒使用的意外事故；另外，遮挡结构还具有防止光溢出的作用。Preferably, a shielding structure is provided behind the optical reflector along the emission direction of the blue excitation light. The shielding structure can be a baffle. This setting can avoid the damage of the optical system or accidental use during use, or the burning of various optical components during the laser transmission process, resulting in the direct emission of the original blue excitation light, etc., to prevent the laser Accidents when the flashlight is used; in addition, the shielding structure also has the function of preventing light overflow.
进一步优选地，所述光学***还包括光学玻璃平片或具有散射光线功能的扩散片，光学玻璃平片或具有散射光线功能的扩散片垂直第二光轴设置并用于安装遮挡结构。光学玻璃平片或具有散射光线功能的扩散片便于遮挡结构的安装固定，且不会阻挡光线，便于照明光的出射。Further preferably, the optical system further includes a flat optical glass sheet or a diffusion sheet with a light-scattering function, and the flat optical glass sheet or a diffusion sheet with a light-scattering function is arranged perpendicular to the second optical axis and used for installing the shielding structure. The optical glass flat sheet or the diffuser sheet with the function of scattering light facilitates the installation and fixation of the shielding structure, and does not block the light, which facilitates the emission of the illuminating light.
优选地，光学反射器镜面反射面积大于入射蓝色激发光束的截面积。这样设置能防止光溢出造成的光损失，保证手电筒的高亮度。Preferably, the specular reflection area of the optical reflector is larger than the cross-sectional area of the incident blue excitation light beam. This setting can prevent light loss caused by light overflow and ensure the high brightness of the flashlight.
优选地，波长转换装置为黄磷荧光粉片。黄磷荧光粉受部分激发光激发形成受激光。Preferably, the wavelength conversion device is a yellow phosphorous phosphor sheet. The yellow phosphorous phosphor is excited by part of the excitation light to form a laser.
本发明还提供了另一种存在多光轴的激光手电筒光学***，包括上述的入射光学***、波长转换装置及出射光学***；入射光学***为多个并围绕波长转换装置设置；且所有入射光学***中的光学反射器形成的整体结构与波长转换装置之间设有第二小透镜，入射光学***及出射光学***均包括所述第二小透镜。The present invention also provides another laser flashlight optical system with multiple optical axes, including the above-mentioned incident optical system, wavelength conversion device, and output optical system; the incident optical system is multiple and arranged around the wavelength conversion device; and all incident optics A second small lens is arranged between the overall structure formed by the optical reflector in the system and the wavelength conversion device, and both the incident optical system and the exit optical system include the second small lens.
上述方案能用于实现高效率远距离或超远距离照明，同时降低使用大功率激光技术的风险，且手电筒体积小。The above solution can be used to realize high-efficiency long-distance or ultra-long-distance lighting, while reducing the risk of using high-power laser technology, and the flashlight is small in size.
现有技术中为了实现超远距离照明，需要使用多个激光器来偶合成单束光出射，此时通常使用二向色镜作为合光装置来获取照明光，在二向色镜的镀膜上设计针对蓝色激发光的反射膜，且该反射膜对黄色光线高透，蓝色激发光入射至二向色镜上时，第一部分蓝色激发光被反射引导到波长转换装置上，第二部分蓝色激发光被二向色镜透射引导到朗伯型散射体上形成朗伯型次光源。这样在波长转换装置上受激辐射出的黄光和形成的朗伯型次光源在二向色镜上重新合光，形成所需要的照明光，这种方案由于需要二向色镜进行分光合光作用，相当于两个光学***，会增大产品的相应设计体积，不方便携带，失去了便携性的最大意义，而上述方案具有使用二向色镜作为合光装置耦合多个激光器的光以实现超远距离照明效果的同时，恰好能解决二向色镜作为合光装置时导致的产品体积大的问题。In the prior art, in order to achieve ultra-long-distance illumination, it is necessary to use multiple lasers to couple and combine a single beam of light. At this time, a dichroic mirror is usually used as a light combining device to obtain the illuminating light, which is designed on the coating of the dichroic mirror. A reflective film for blue excitation light, and the reflective film is highly transparent to yellow light. When the blue excitation light is incident on the dichroic mirror, the first part of the blue excitation light is reflected and guided to the wavelength conversion device, and the second part The blue excitation light is transmitted and guided by the dichroic mirror to the Lambertian scatterer to form a Lambertian secondary light source. In this way, the yellow light emitted by the wavelength conversion device and the Lambertian secondary light source formed are recombined on the dichroic mirror to form the required illuminating light. This solution requires the dichroic mirror to split and combine the light. The light function is equivalent to two optical systems, which will increase the corresponding design volume of the product, which is inconvenient to carry, and loses the greatest significance of portability. The above scheme has the use of a dichroic mirror as a light combining device to couple the light of multiple lasers. In order to achieve the ultra-long distance lighting effect, it can just solve the problem of large product volume caused by the dichroic mirror as a light combining device.
所述激光器为可发射出蓝色激发光的半导体激光器件并设于第一光轴上，激光器所辐射出的激发光沿第一光轴经第一小透镜进行聚焦，然后利用光学反射器来使聚焦后的蓝色激发光发生偏转，经偏转后的蓝色激发光被引导到波长转换装置（黄磷荧光粉片）上，波长转换装置受部分蓝色激发光激发后形成受激光，受激光和未被波长转换装置吸收的激发光经由第二小透镜及出光透镜准直后形成***行的照明光出射，以达到白色激光手电筒实现高效率远距离照明的效果。The laser is a semiconductor laser device that can emit blue excitation light and is arranged on the first optical axis. The excitation light emitted by the laser is focused along the first optical axis by a first small lens, and then an optical reflector is used to The focused blue excitation light is deflected, and the deflected blue excitation light is guided to the wavelength conversion device (yellow phosphorous phosphor sheet). The wavelength conversion device is excited by part of the blue excitation light to form a received laser light. The laser and the excitation light not absorbed by the wavelength conversion device are collimated by the second small lens and the light-emitting lens to form a nearly parallel illuminating light, so as to achieve the effect of high-efficiency long-distance illumination of the white laser flashlight.
本发明的另一个目的，在于提供一种存在多光轴的激光手电筒，包括筒体及筒头，筒头内设有上述光学***；筒体内设有为激光器提供电能的电池，筒体上设有用于控制激光器打开和关闭的开关。Another object of the present invention is to provide a laser flashlight with multiple optical axes, including a barrel body and a barrel head. The barrel head is provided with the above-mentioned optical system; the barrel body is provided with a battery that provides power to the laser, and the barrel body is provided There are switches used to control the turning on and off of the laser.
有益效果Beneficial effect
与现有技术相比，本发明的有益效果为：Compared with the prior art, the beneficial effects of the present invention are:
一个光学反射器的反射作用使得激发光通过多光轴光路的折叠后进入波长转换装置，经波长转换装置后形成的照明光由出射光学***出射，实现高效率远距离的照明效果，由于激光器发出的激发光所在第一光轴和作为照明光的出射光轴的第二光轴平行并错开设置，大大地降低了使用大功率激光技术的风险，同时使得手电筒横向尺寸不会比原来大很多，且激光接近点光源使得手电筒体积小；另外，使用一个光学反射器对光束进行反射以折叠光束相比于使用多个光学反射器，提高光学效率的同时降低手电筒设计复杂程度。The reflection effect of an optical reflector makes the excitation light enter the wavelength conversion device after being folded by the multi-optical axis optical path. The illuminating light formed after the wavelength conversion device is emitted by the exit optical system to achieve high-efficiency long-distance lighting effects. The first optical axis where the excitation light is located and the second optical axis as the exit optical axis of the illumination light are parallel and staggered, which greatly reduces the risk of using high-power laser technology, and at the same time makes the lateral size of the flashlight not much larger than the original. And the laser is close to the point light source to make the flashlight small; in addition, using an optical reflector to reflect the beam to fold the beam is compared to using multiple optical reflectors, which improves optical efficiency while reducing the complexity of flashlight design.
附图说明Description of the drawings
图1为实施例1一种存在多光轴的激光手电筒光学***的示意图。Figure 1 is a schematic diagram of a laser flashlight optical system with multiple optical axes in Embodiment 1.
图2为实施例2一种存在多光轴的激光手电筒光学***的示意图。2 is a schematic diagram of a laser flashlight optical system with multiple optical axes in Embodiment 2.
图3为实施例2中现有技术中使用二向色镜来对多个激光器发出的蓝色激发光进行合光获取照明光的光学***的示意图。3 is a schematic diagram of an optical system that uses a dichroic mirror to combine the blue excitation light emitted by a plurality of lasers to obtain illumination light in the prior art in Embodiment 2.
附图标识：201激光器；301第一小透镜；401光学反射器；501第二小透镜；601出光透镜；701第一光轴；702第二光轴；801遮挡结构；901波长转换装置；1001光学玻璃平片；2001二向色镜。Reference signs: 201 laser; 301 first small lens; 401 optical reflector; 501 second small lens; 601 light-emitting lens; 701 first optical axis; 702 second optical axis; 801 shielding structure; 901 wavelength conversion device; 1001 Optical glass flat film; 2001 dichroic mirror.
本发明的实施方式Embodiments of the invention
本发明附图仅用于示例性说明，不能理解为对本发明的限制。为了更好说明以下实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对于本领域技术人员来说，附图中某些公知结构及其说明的可能省略是可以理解的。The drawings of the present invention are only used for exemplary description, and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, some well-known structures in the drawings and their descriptions may be omitted It is understandable.
实施例Example 11
如图1所示，本实施例提供了一种存在多光轴的激光手电筒光学***，包括入射光学***、波长转换装置901及出射光学***；入射光学***包括激光器201及一个光学反射器401，激光器201用于发出蓝色激发光，一个光学反射器401用于对蓝色激发光进行一次反射以折叠光束形成多光轴并引导折叠后的蓝色激发光至波长转换装置901；波长转换装置901为朗伯型散射体并用于吸收部分激发光形成受激光；受激光和未被波长转换装置901吸收的激发光形成照明光由出射光学***出射；激光器201发出的蓝色激发光所在第一光轴701和作为照明光的出射光轴的第二光轴702平行并错开设置。As shown in Figure 1, this embodiment provides a laser flashlight optical system with multiple optical axes, including an incident optical system, a wavelength conversion device 901, and an exit optical system; the incident optical system includes a laser 201 and an optical reflector 401, The laser 201 is used to emit blue excitation light, and an optical reflector 401 is used to reflect the blue excitation light once to fold the beam to form a multi-optical axis and guide the folded blue excitation light to the wavelength conversion device 901; wavelength conversion device 901 is a Lambertian scatterer and is used to absorb part of the excitation light to form a received laser; the received laser and the excitation light not absorbed by the wavelength conversion device 901 form the illumination light which is emitted by the exit optical system; the blue excitation light emitted by the laser 201 is located in the first The optical axis 701 and the second optical axis 702, which is an emission optical axis of the illumination light, are parallel and staggered.
由于波长转换装置901为朗伯型散射体，所以激光器201发出的蓝色激发光以任何角度进入波长转换装置901后被其部分吸收形成受激光，受激光和未被波长转换装置901吸收的激发光形成照明光，且该照明光相当于朗伯型发光体。Since the wavelength conversion device 901 is a Lambertian scatterer, the blue excitation light emitted by the laser 201 enters the wavelength conversion device 901 at any angle and is partially absorbed by it to form a received laser, which is excited by the laser and not absorbed by the wavelength conversion device 901 The light forms illumination light, and the illumination light is equivalent to a Lambertian luminous body.
定义手电筒长度方向为纵向，与纵向垂直方向为横向；激光器201发出的蓝色激发光所在第一光轴701和作为照明光的出射光轴的第二光轴702平行并错开设置使得激光器201发出的蓝色激发光为纵向，进而使得激光器201的设置不会使手电筒横向尺寸比原来大很多。The length direction of the flashlight is defined as the longitudinal direction, and the vertical direction is the transverse direction; the first optical axis 701 where the blue excitation light emitted by the laser 201 is located is parallel to the second optical axis 702 as the exit optical axis of the illumination light and is staggered so that the laser 201 emits The blue excitation light is longitudinal, so that the setting of the laser 201 will not make the lateral size of the flashlight much larger than the original.
本发明中，一个光学反射器401的反射作用使得蓝色激发光通过多光轴光路的折叠后进入波长转换装置901，经波长转换装置901后形成的照明光由出射光学***出射，实现高效率远距离的照明效果，由于激光器201发出的蓝色激发光所在第一光轴701和作为照明光的出射光轴的第二光轴702平行并错开设置，大大地降低了使用大功率激光技术的风险，同时使得手电筒横向尺寸不会比原来大很多，且激光接近点光源使得手电筒体积小；另外，使用一个光学反射器401对光束进行反射以折叠光束相比于使用多个光学反射器，提高光学效率的同时降低手电筒设计复杂程度。In the present invention, the reflection effect of an optical reflector 401 makes the blue excitation light enter the wavelength conversion device 901 after being folded by the multi-optical axis optical path, and the illumination light formed after the wavelength conversion device 901 is emitted by the exit optical system to achieve high efficiency The long-distance lighting effect, because the first optical axis 701 of the blue excitation light emitted by the laser 201 and the second optical axis 702 as the exit optical axis of the illuminating light are parallel and staggered, it greatly reduces the use of high-power laser technology. At the same time, the lateral size of the flashlight will not be much larger than the original, and the laser is close to the point light source to make the flashlight small; in addition, using an optical reflector 401 to reflect the beam to fold the beam is improved compared to using multiple optical reflectors. The optical efficiency also reduces the complexity of flashlight design.
其中，所述入射光学***还包括设于激光器201和光学反射器401之间的第一小透镜301，第一小透镜301用于将激光器201发出的发散蓝色激发光进行聚焦。这样设置使激发光经由入射光学***聚焦于波长转换装置901上，且激光在传输过程中，能减小在光学反射器401位置的蓝色激发光束的截面积，进而缩小光学反射器401的面积。Wherein, the incident optical system further includes a first small lens 301 arranged between the laser 201 and the optical reflector 401, and the first small lens 301 is used to focus the divergent blue excitation light emitted by the laser 201. This arrangement enables the excitation light to be focused on the wavelength conversion device 901 via the incident optical system, and during the laser transmission process, the cross-sectional area of the blue excitation beam at the position of the optical reflector 401 can be reduced, thereby reducing the area of the optical reflector 401 .
另外，沿光传播方向在光学反射器401与波长转换装置901之间设有第二小透镜501，入射光学***及出射光学***均包括所述第二小透镜501。经光学反射器401反射后的蓝色激发光以大视场角度范围从第二小透镜501的边缘区域入射到波长转换装置901上；这样设置便于将蓝色激发光聚焦于波长转换装置901上，以便于波长转换装置901吸收部分激发光形成的受激光与未吸收的激发光合成高能量密度的照明光。In addition, a second small lens 501 is provided between the optical reflector 401 and the wavelength conversion device 901 along the light propagation direction, and both the incident optical system and the exit optical system include the second small lens 501. The blue excitation light reflected by the optical reflector 401 is incident on the wavelength conversion device 901 from the edge area of the second small lens 501 with a large field of view angle range; this arrangement is convenient for focusing the blue excitation light on the wavelength conversion device 901 , So that the wavelength conversion device 901 absorbs part of the excited light formed by the laser light and the unabsorbed excitation light to synthesize high-energy density illumination light.
其中，出射光学***还包括设于光出射方向最外部的出光透镜601；波长转换装置901位于出光透镜601与第二小透镜501的组合焦点上；受激光和未被波长转换装置901吸收的激发光经由第二小透镜501及出光透镜601准直后形成***行的照明光出射。可根据使用需求选择不同的出光透镜601尺寸及参数进行搭配，以变换该光学***的照射角度，实现远近距离变化的需求。Wherein, the exit optical system also includes a light exit lens 601 located at the outermost part of the light exit direction; the wavelength conversion device 901 is located at the combined focal point of the light exit lens 601 and the second small lens 501; The light is collimated by the second small lens 501 and the light emitting lens 601 to form a nearly parallel illuminating light and exit. Different sizes and parameters of the light-emitting lens 601 can be selected according to use requirements to change the illumination angle of the optical system to achieve the requirements of long and short distance changes.
另外，沿蓝色激发光出射方向在光学反射器401后设有遮挡结构801。这样设置能规避在使用过程中光学***的损坏或意外使用，或激光传导过程中各光学元器件的烧损导致原蓝色激发光直接射出等使用风险，以防止激光手电筒使用的意外事故；另外，遮挡结构801还具有防止光溢出的作用。In addition, a shielding structure 801 is provided behind the optical reflector 401 along the emission direction of the blue excitation light. This setting can avoid the use of damage to the optical system or accidental use during use, or the burning of various optical components during the laser transmission process, resulting in the direct emission of the original blue excitation light, etc., to prevent accidents in the use of laser flashlights; The shielding structure 801 also has the function of preventing light overflow.
其中，所述光学***还包括光学玻璃平片1001或具有散射光线功能的扩散片，光学玻璃平片1001或具有散射光线功能的扩散片垂直第二光轴702设置并用于安装遮挡结构801。光学玻璃平片1001或具有散射光线功能的扩散片便于遮挡结构801的安装固定，且不会阻挡光线，便于照明光的出射。Wherein, the optical system further includes a flat optical glass sheet 1001 or a diffusion sheet with a light-scattering function, and the flat optical glass sheet 1001 or a diffusion sheet with a light-scattering function is arranged perpendicular to the second optical axis 702 and used for installing the shielding structure 801. The optical glass flat sheet 1001 or the diffuser sheet with the function of scattering light facilitates the installation and fixation of the shielding structure 801 without blocking the light, which facilitates the emission of the illumination light.
另外，光学反射器401镜面反射面积大于入射蓝色激发光束的截面积。这样设置能防止光溢出造成的光损失，保证手电筒的高亮度。In addition, the specular reflection area of the optical reflector 401 is larger than the cross-sectional area of the incident blue excitation light beam. This setting can prevent light loss caused by light overflow and ensure the high brightness of the flashlight.
本实施例中，波长转换装置901为黄磷荧光粉片。黄磷荧光粉受部分激发光激发形成受激光。In this embodiment, the wavelength conversion device 901 is a yellow phosphorous phosphor sheet. The yellow phosphorous phosphor is excited by part of the excitation light to form a laser.
本实施例中，所述激光器201为可发射出蓝色激发光的半导体激光器件并设于第一光轴701上，激光器201所辐射出的激发光沿第一光轴701经第一小透镜301进行聚焦，然后利用光学反射器401来使聚焦后的蓝色激发光发生偏转，经偏转后的蓝色激发光被引导到波长转换装置901（黄磷荧光粉片）上，波长转换装置901受部分蓝色激发光激发后形成受激光，受激光和未被波长转换装置901吸收的激发光经由第二小透镜501及出光透镜601准直后形成***行的照明光出射，以达到白色激光手电筒100实现高效率远距离照明的效果。In this embodiment, the laser 201 is a semiconductor laser device that can emit blue excitation light and is arranged on the first optical axis 701. The excitation light emitted by the laser 201 passes through the first small lens along the first optical axis 701. 301 focuses, and then uses the optical reflector 401 to deflect the focused blue excitation light, and the deflected blue excitation light is guided to the wavelength conversion device 901 (yellow phosphorous phosphor sheet), the wavelength conversion device 901 Part of the blue excitation light is excited to form a received laser. The received laser and the excitation light not absorbed by the wavelength conversion device 901 are collimated by the second small lens 501 and the light emitting lens 601 to form a nearly parallel illuminating light to emit to achieve a white laser. The flashlight 100 realizes the effect of high-efficiency long-distance lighting.
本实施例还提供了一种存在多光轴的激光手电筒，包括筒体及筒头，筒头内设有上述光学***；筒体内设有为激光器提供电能的电池，筒体上设有用于控制激光器打开和关闭的开关。开关的设置便于打开和关闭该手电筒。This embodiment also provides a laser flashlight with multiple optical axes, including a barrel body and a barrel head. The barrel head is equipped with the above-mentioned optical system; the barrel body is provided with a battery for providing power to the laser, and the barrel body is provided with control Switch for turning the laser on and off. The setting of the switch is convenient to turn on and turn off the flashlight.
实施例Example 22
本实施例提供了另一种存在多光轴的激光手电筒光学***，如图2所示，包括实施例1所述的入射光学***、波长转换装置901及出射光学***；其与实施例1的区别在于：入射光学***为多个并围绕波长转换装置901设置；且所有入射光学***中的光学反射器401形成的整体结构与波长转换装置901之间设有第二小透镜501，入射光学***及出射光学***均包括所述第二小透镜501。This embodiment provides another laser flashlight optical system with multiple optical axes, as shown in FIG. 2, including the incident optical system, the wavelength conversion device 901, and the exit optical system described in Embodiment 1; it is the same as that of Embodiment 1. The difference is that there are multiple incident optical systems and are arranged around the wavelength conversion device 901; and the overall structure formed by the optical reflectors 401 in all incident optical systems and the wavelength conversion device 901 are provided with a second small lens 501, the incident optical system Both the exit optical system and the exit optical system include the second small lens 501.
本实施例能用于实现高效率远距离或超远距离照明，同时降低使用大功率激光技术的风险，且手电筒体积小。This embodiment can be used to achieve high-efficiency long-distance or ultra-long-distance lighting, while reducing the risk of using high-power laser technology, and the flashlight is small in size.
现有技术中为了实现超远距离照明，需要使用多个激光器来偶合成单束光出射，如图3所示，此时通常使用二向色镜2001作为合光装置来获取照明光，在二向色镜2001的镀膜上设计针对蓝色激发光的反射膜，且该反射膜对黄色光线高透，蓝色激发光入射至二向色镜2001上时，第一部分蓝色激发光被反射引导到波长转换装置901上，第二部分蓝色激发光被二向色镜2001透射引导到朗伯型散射体上形成朗伯型次光源。这样在波长转换器装置901上受激辐射出的黄光和形成的朗伯型次光源在二向色镜2001上重新合光，形成所需要的照明光，这种方案由于需要二向色镜2001进行分光合光作用，相当于两个光学***，会增大产品的相应设计体积，不方便携带，失去了便携性的最大意义，而本实施例具有使用二向色镜作为合光装置耦合多个激光器的光以实现超远距离照明效果的同时，恰好能解决二向色镜作为合光装置时导致的产品体积大的问题。In the prior art, in order to achieve ultra-long-distance illumination, it is necessary to use multiple lasers to couple and combine a single beam of light, as shown in Figure 3. At this time, a dichroic mirror 2001 is usually used as a light combining device to obtain illumination light. A reflective film for blue excitation light is designed on the coating of the dichroic mirror 2001, and the reflective film is highly transparent to yellow light. When the blue excitation light is incident on the dichroic mirror 2001, the first part of the blue excitation light is reflected and guided On the wavelength conversion device 901, the second part of the blue excitation light is transmitted and guided by the dichroic mirror 2001 to the Lambertian scatterer to form a Lambertian secondary light source. In this way, the yellow light emitted by the wavelength converter device 901 and the Lambertian secondary light source formed are recombined on the dichroic mirror 2001 to form the required illuminating light. This solution requires a dichroic mirror The function of light splitting and light combining in 2001 is equivalent to two optical systems, which will increase the corresponding design volume of the product, which is inconvenient to carry and loses the greatest significance of portability. However, this embodiment has the use of a dichroic mirror as a light combining device for coupling The light of multiple lasers can achieve ultra-long-distance lighting effects, and at the same time, it can solve the problem of large product volume caused by dichroic mirrors as light combining devices.
显然，本发明的上述实施例仅仅是为清楚地说明本发明技术方案所作的举例，而并非是对本发明的具体实施方式的限定。凡在本发明权利要求书的精神和原则之内所作的任何修改、等同替换和改进等，均应被包含在本发明权利要求的保护范围之内。Obviously, the above-mentioned embodiments of the present invention are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

  1. 一种存在多光轴的激光手电筒光学***，其特征在于，包括入射光学***、波长转换装置（901）及出射光学***；入射光学***包括激光器（201）及一个光学反射器（401），激光器（201）用于发出激发光，一个光学反射器（401）用于对激发光进行一次反射以折叠光束并引导折叠后的激发光至波长转换装置（901）；波长转换装置（901）为朗伯型散射体并用于吸收部分激发光形成受激光；受激光和未被波长转换装置（901）吸收的激发光形成照明光由出射光学***出射；激光器（201）发出的激发光所在第一光轴（701）和作为照明光的出射光轴的第二光轴（702）平行并错开设置。A laser flashlight optical system with multiple optical axes, which is characterized by comprising an incident optical system, a wavelength conversion device (901) and an exit optical system; the incident optical system includes a laser (201) and an optical reflector (401), the laser (201) is used to emit excitation light, and an optical reflector (401) is used to reflect the excitation light once to fold the beam and guide the folded excitation light to the wavelength conversion device (901); the wavelength conversion device (901) is Lang The Burr-type scatterer is used to absorb part of the excitation light to form a received laser; the received laser and the excitation light not absorbed by the wavelength conversion device (901) form the illumination light and exit by the exit optical system; the first light emitted by the laser (201) The axis (701) and the second optical axis (702) which is an emission optical axis of the illumination light are parallel and staggered.
  2. 根据权利要求1所述的一种存在多光轴的激光手电筒光学***，其特征在于，所述入射光学***还包括设于激光器（201）和光学反射器（401）之间的第一小透镜（301），第一小透镜（301）用于将激光器（201）发出的发散蓝色激发光进行聚焦。The laser flashlight optical system with multiple optical axes according to claim 1, wherein the incident optical system further comprises a first small lens arranged between the laser (201) and the optical reflector (401) (301), the first small lens (301) is used to focus the divergent blue excitation light emitted by the laser (201).
  3. 根据权利要求2所述的一种存在多光轴的激光手电筒光学***，其特征在于，沿光传播方向在光学反射器（401）与波长转换装置（901）之间设有第二小透镜（501），入射光学***及出射光学***均包括所述第二小透镜（501）。A laser flashlight optical system with multiple optical axes according to claim 2, characterized in that a second small lens (401) is provided between the optical reflector (401) and the wavelength conversion device (901) along the light propagation direction. 501). Both the incident optical system and the exit optical system include the second small lens (501).
  4. 根据权利要求3所述的一种存在多光轴的激光手电筒光学***，其特征在于，出射光学***还包括设于光出射方向最外部的出光透镜（601）；波长转换装置（901）位于出光透镜（601）与第二小透镜（501）的组合焦点上；受激光和未被波长转换装置（901）吸收的激发光经由第二小透镜（501）及出光透镜（601）准直后形成***行的照明光出射。The laser flashlight optical system with multiple optical axes according to claim 3, characterized in that the exit optical system further comprises a light exit lens (601) arranged at the outermost part of the light exit direction; the wavelength conversion device (901) is located at the light exit The combined focal point of the lens (601) and the second small lens (501); the laser light and the excitation light not absorbed by the wavelength conversion device (901) are collimated by the second small lens (501) and the light emitting lens (601) to form The nearly parallel illuminating light is emitted.
  5. 根据权利要求1所述的一种存在多光轴的激光手电筒光学***，其特征在于，沿蓝色激发光出射方向在光学反射器（401）后设有遮挡结构（801）。The laser flashlight optical system with multiple optical axes according to claim 1, wherein a shielding structure (801) is provided behind the optical reflector (401) along the emission direction of the blue excitation light.
  6. 根据权利要求5所述的一种存在多光轴的激光手电筒光学***，其特征在于，所述光学***还包括光学玻璃平片（1001）或具有散射光线功能的扩散片，光学玻璃平片（1001）或具有散射光线功能的扩散片垂直第二光轴（702）设置并用于安装遮挡结构（801）。A laser flashlight optical system with multiple optical axes according to claim 5, characterized in that the optical system further comprises an optical glass flat sheet (1001) or a diffuser with a light scattering function, and an optical glass flat sheet (1001) 1001) Or a diffuser with a light scattering function is arranged perpendicular to the second optical axis (702) and used to install the shielding structure (801).
  7. 根据权利要求1所述的一种存在多光轴的激光手电筒光学***，其特征在于，光学反射器（401）镜面反射面积大于入射蓝色激发光束的截面积。The laser flashlight optical system with multiple optical axes according to claim 1, wherein the specular reflection area of the optical reflector (401) is larger than the cross-sectional area of the incident blue excitation light beam.
  8. 根据权利要求1至7任一项所述的一种存在多光轴的激光手电筒光学***，其特征在于，波长转换装置（901）为黄磷荧光粉片。The laser flashlight optical system with multiple optical axes according to any one of claims 1 to 7, wherein the wavelength conversion device (901) is a yellow phosphorous phosphor sheet.
  9. 一种存在多光轴的激光手电筒光学***，其特征在于，包括权利要求1至8任一项所述的入射光学***、波长转换装置（901）及出射光学***；入射光学***为多个并围绕波长转换装置（901）设置；且所有入射光学***中的光学反射器（401）形成的整体结构与波长转换装置（901）之间设有第二小透镜（501），入射光学***及出射光学***均包括所述第二小透镜（501）。A laser flashlight optical system with multiple optical axes, which is characterized by comprising the incident optical system, wavelength conversion device (901) and exit optical system according to any one of claims 1 to 8; the incident optical system is a plurality of parallel It is arranged around the wavelength conversion device (901); and the integral structure formed by the optical reflector (401) in all the incident optical systems and the wavelength conversion device (901) are provided with a second small lens (501), the incident optical system and the exit The optical systems all include the second small lens (501).
  10. 一种存在多光轴的激光手电筒，包括筒体及筒头，其特征在于，筒头内设有权利要求1至9任一项所述的光学***；筒体内设有为激光器提供电能的电池，筒体上设有用于控制激光器打开和关闭的开关。A laser flashlight with multiple optical axes, comprising a barrel body and a barrel head, characterized in that the barrel head is provided with the optical system according to any one of claims 1 to 9; the barrel is provided with a battery that provides power to the laser , The cylinder is provided with a switch for controlling the laser on and off.
PCT/CN2019/125975 2019-06-13 2019-12-17 Laser flashlight optical system having multiple optical axes, and laser flashlight WO2020248560A1 (en)

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