CN209879071U - Laser lighting system - Google Patents

Abstract

The utility model provides a laser lighting system, which comprises a plurality of monochromatic laser sources and corresponding drivers, wherein laser emitted from a laser exit port of the laser sources is emitted into a light mixer after the direction of the laser is adjusted by a prism; the rear end of the light mixer is provided with a coupler, and the coupler is connected with an optical fiber; the laser illumination system also comprises a light mixer, wherein the light mixer is used for mixing the plurality of monochromatic light beams emitted from the prism. In the laser illumination system, the angle adjusting mechanisms are arranged at least two laser sources, when the refractive indexes of the prisms are different due to different sizes, materials or batches, the angle adjusting mechanisms are used for adjusting the incidence angle and/or the incidence position of the monochromatic light beams emitted by the laser sources entering the prisms, so that the plurality of monochromatic light beams emitted by the prisms can intersect on the light mixer.

Description

Laser lighting system

Technical Field

The utility model belongs to the technical field of lighting system, concretely relates to laser lighting system.

Background

At present, the optical fiber is mainly used for lighting, and LED coupling optical fiber or laser coupling optical fiber is mainly used for exciting fluorescent powder for lighting. The LED coupling optical fiber has low efficiency and large LED light-emitting area, and the diameter of the optical fiber required in coupling is thicker, so that the cost is increased; if the LED light source is coupled into the thin optical fiber, the coupling efficiency is extremely low, and a large amount of resources are wasted. By utilizing the characteristics of small laser divergence angle, energy concentration, long propagation distance, narrow bandwidth, strong collimation and the like, the coupling efficiency of laser coupled into the optical fiber is higher than that of an LED. However, the illumination mode of exciting the phosphor after the laser couples the optical fiber cannot flexibly control the light color of the emitted light, which limits the application of special illumination, such as dyeing illumination for endoscopes.

In the laser coupling of optical fibers, red, blue and green monochromatic light sources are often reflected and refracted by a prism and then can be intersected in a light mixer, and then coupled into optical fibers through a coupler after the action of the light mixer, and the optical fibers conduct the coupled light to a specified illumination position. However, the refractive indexes of prisms in different batches or different material components or different sizes are different, so that the three monochromatic light sources cannot intersect after the prism action, so that the light mixing effect of the light mixer is poor, and the illumination light meeting the requirements cannot be obtained.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem that exists among the prior art, the utility model aims at providing a laser lighting system, its incident angle and/or incident position that can adjust an at least a branch of monochromatic light source to make three bundles of light sources can intersect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a laser lighting system comprises a plurality of monochromatic laser sources and corresponding drivers thereof, wherein laser emitted by a laser exit port of each laser source is adjusted by a prism and then enters a light mixer; the light outlet of the light mixer is provided with a coupler, and the coupler is connected with an optical fiber; the angle adjusting mechanism is arranged at part or all of the laser sources and used for adjusting the incidence angle and/or the incidence position of the monochromatic light beams emitted by the laser sources entering the prism, so that the plurality of monochromatic light beams emitted from the prism can be intersected on the light mixer.

In the technical scheme, the angle adjusting mechanism is arranged at the laser source, when the refractive indexes of the prisms are different due to different sizes, materials or batches, the angle adjusting mechanism is used for adjusting the incidence angle and/or the incidence position of the monochromatic light beams emitted by the laser source entering the prisms, so that the plurality of monochromatic light beams emitted by the prisms can intersect on the light mixer.

In a preferred embodiment of the present invention, the angle adjusting mechanism includes a sliding groove, the laser source is slidably connected to the sliding groove, the laser source is connected to a screw seat, the screw seat is threadedly connected to a screw, and the other end of the screw is rotatably connected to a fixed screw limiting seat; the laser source can slide in the chute by rotating the screw. Through setting up the screw rod, the screw rod rotates with the spacing seat of fixed screw rod and is connected, rotates the screw rod, and the laser source slides in the spout to change the incident angle and/or the penetrating position that monochromatic light beam got into the prism.

In a preferred embodiment of the present invention, the number of the monochromatic laser sources is three or four; when the number of the monochromatic laser sources is three, the three monochromatic beams are respectively red, green and blue beams; when the number of the monochromatic laser sources is four, the four monochromatic beams are respectively red, green, blue and purple beams.

The red, blue and green monochromatic laser sources can obtain illumination light with different colors according to a color matching principle, but the wavelength of the purple light is shortest, the efficiency is lower when the purple light is configured by the red, blue and green light beams, and the purple light can be independently set in practice, so that the efficiency is improved.

In a preferred embodiment of the present invention, the number of the monochromatic laser sources is three, which are respectively the first laser source, the second laser source and the third laser source;

the prism comprises a front surface and a rear surface, the front surface and the rear surface are arranged in parallel or the front surface and the rear surface are arranged in an inclined manner, and the front surface is plated with a film layer which transmits the first monochromatic light beam and reflects the second monochromatic light beam and the third monochromatic light beam;

a first monochromatic beam emitted by the first laser source enters from the front surface and is emitted from the rear surface, a second monochromatic beam emitted by the second laser source and a third monochromatic beam emitted by the third laser source both enter from the rear surface, are reflected by the front surface and are emitted from the rear surface;

after the angle adjusting mechanism adjusts the incident angle and/or the incident position of the monochromatic light beam entering the prism, the three monochromatic light beams emitted from the rear surface of the prism are intersected on the light mixer.

In the technical scheme, the three monochromatic light beams are transmitted, reflected and refracted by the front surface and the rear surface of the prism, are finally emitted from the rear surface of the prism and are intersected on the light mixer, and the prism is simple in structure and convenient to manufacture.

In a preferred embodiment of the present invention, the prism front surface and the prism rear surface are disposed in parallel, and the second laser source and the third laser source are respectively located at two sides of the light mixer;

the first monochromatic light beam emitted by the first laser source is incident in a direction perpendicular to the front surface, the first monochromatic light beam is transmitted by the front surface and then is emitted perpendicularly from the rear surface, or the first monochromatic light beam emitted by the first laser source is incident in a direction inclined to the front surface, the angle adjusting mechanism is arranged at the first laser source, the first monochromatic light beam is refracted by the front surface and then is emitted to the rear surface, and the first monochromatic light beam is refracted by the rear surface and then is emitted to a fixed point A of the light mixer in a direction parallel to the incident direction;

the second monochromatic beam that the second laser source sent and the third monochromatic beam that the third laser source sent are to the direction that is close to the ware that mixes the light respectively to the rear surface of penetrating aslope, and second laser source and third laser source department all are equipped with angle adjustment mechanism, second monochromatic beam/third monochromatic beam penetrate to the front surface after the rear surface refraction, and second monochromatic beam/third monochromatic beam penetrate to the rear surface after the front surface reflection, penetrate to the fixed point A department of light mixing ware after the rear surface refraction again.

In the technical scheme, the front surface and the rear surface of the prism are arranged in parallel, and when the first monochromatic light beam emitted by the first laser source is incident perpendicularly to the front surface of the prism, the transmission path of the first monochromatic light beam is irrelevant to the refractive index of the prism in the process of incident and emergent of the first monochromatic light beam into and out of the prism, so that an angle adjusting mechanism is not needed.

In another preferred embodiment of the present invention, the first laser source emits a blue light beam, the second laser source emits a green light beam, and the third laser source emits a red light beam.

In another preferred embodiment of the present invention, each of the three monochromatic laser sources includes a laser and a collimator located between the laser and the prism. The laser is used for emitting monochromatic laser, and the collimator is used for shaping and collimating the monochromatic laser emitted by the laser and then emitting the monochromatic laser to the prism, so that the light can be coupled into the optical fiber with the maximum efficiency.

In another preferred embodiment of the present invention, the end of the optical fiber is further connected to a light distribution module, the light distribution module includes a first lens, a second lens and a light homogenizing plate, which are sequentially arranged from front to back, and the distance between the first lens and the second lens is adjustable.

The light emitted by the optical fiber is subjected to the light distribution effect of the light distribution system, and the irradiation angle and the uniformity of light spots are adjusted, so that the quality of the irradiated light spots is ensured. The first lens and the second lens act together to adjust the light-emitting angle of the illumination system, and the light-homogenizing plate is used for homogenizing the emitted light spots.

In another preferred embodiment of the present invention, the first lens is mounted on the first lens holder, the second lens is mounted on the second lens holder, and the first lens holder is screwed to the second lens holder. Therefore, the second lens seat can be rotated to enable the second lens to be far away from or close to the first lens, so that the distance between the first lens and the second lens can be adjusted, and the adjusting mode is simple.

In another preferred embodiment of the present invention, the inner wall of the rear portion of the first lens holder has a first annular table, the rear end of the first lens is clamped on the first annular table, and the front end of the first lens is fixed by the first press ring;

the inner wall of the front part of the second lens seat is provided with a second ring platform, the front part of the second ring platform extends inwards to form a third ring platform, the front end of the second lens is clamped on the third ring platform, the light homogenizing plate is clamped on the second ring platform, a spacing ring is pressed between the second lens and the light homogenizing plate, and the rear end of the light homogenizing plate is fixed through a second pressing ring.

Install first lens on first lens seat through first ring platform and first clamping ring, install even bare board on the second lens seat through second ring platform and second clamping ring, install second lens on the second lens seat through third ring platform, spacer ring and even bare board, the setting of spacer ring for second lens and even bare board can keep the certain distance.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic top view of a laser illumination system according to a first embodiment.

Fig. 2 is a schematic internal structural view of a light distribution module in the laser illumination system according to the first embodiment.

Fig. 3 is a schematic diagram of transmission paths of three monochromatic light beams in the laser illumination system according to the second embodiment in the prism.

Fig. 4 is a schematic diagram of transmission paths of three monochromatic light beams in a prism in a laser illumination system according to a third embodiment.

Fig. 5 is a schematic diagram of a transmission path of three monochromatic light beams in the prism in the laser illumination system according to the third embodiment.

Fig. 6 is a schematic diagram third of transmission paths of three monochromatic light beams in the prism in the laser illumination system of the third embodiment.

Fig. 7 is a schematic diagram of a transmission path of three monochromatic light beams in the prism in the laser illumination system of the third embodiment.

Fig. 8 is a schematic diagram of transmission paths of four monochromatic light beams in a prism in a laser illumination system according to a fourth embodiment.

Reference numerals in the drawings of the specification include: the light source device comprises a driving controller 1, a collimator 201, a first laser source 21, a first laser 211, a second laser source 22, a second laser 221, a third laser source 23, a third laser 231, a fourth laser source 24, a heat dissipation base 3, a prism 4, a prism front surface 41, a film layer 411, a prism rear surface 42, a light mixer 5, a coupler 6, an optical fiber 7, an angle adjusting mechanism 8, a knob 81, a screw limiting seat 82, a screw 83, a screw seat 84, a chute 85, a light distribution module 9, a first lens 91, a second lens 92, a light homogenizing plate 93, a first lens seat 94, a first ring platform 941, a first press ring 95, a second lens seat 96, a second ring platform 961, a third ring platform 962, a spacer ring 97, a second press ring 98 and a light mixer fixing point A.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

This embodiment provides a laser lighting system, as shown in fig. 1, in a preferred embodiment of the present invention, it includes a plurality of monochromatic laser sources and their corresponding drivers, and the light intensity of specific single laser is determined by the color matching principle as required, and this is prior art, and is not repeated herein. Drivers corresponding to a plurality of monochromatic laser sources are integrated in the driving controller 1, the driving controller 1 controls and adjusts the on-off and output power of each laser source, and after a display panel is equipped in practice, various indexes of the illumination of the whole system can be intuitively displayed, for example: luminous flux, color temperature, color rendering index, color tolerance, etc.

A plurality of monochromatic light beams emitted by the laser emitting ports of the plurality of monochromatic laser sources are emitted into the light mixer 5 after the direction of the monochromatic light beams is adjusted by the prism 4; a light outlet at the rear end of the light mixer 5 is provided with a coupler 6, and the coupler 6 is connected with an optical fiber 7; an angle adjusting mechanism 8 is arranged at part or all of the laser sources, when the refractive indexes of the prisms 4 are different due to different materials, batches or sizes, the angle adjusting mechanism 8 adjusts the incident angle and/or the incident position of the monochromatic light beams emitted by the laser sources entering the prisms 4, so that the monochromatic light beams emitted from the prisms 4 can intersect on the light mixer 5, namely, the monochromatic light beams can all be emitted to the fixed point A of the light mixer.

A plurality of monochromatic light beams emitted by a plurality of monochromatic laser sources are emitted to a fixed point A of the mixer after the directions of the monochromatic light beams are adjusted by the prism 4, and the light mixer 5 mixes the laser light with different wave bands, so that the illumination system can emit light with required colors, such as warm white light, positive white light, blue light, red light, purple light, green light and the like; the light emitted from the light mixer 5 is coupled into the optical fiber 7 by the action of collimation, focusing and the like of the coupler 6, and the optical fiber 7 conducts the coupled light to a designated illumination position.

The light provided by the laser illumination system can be used for general illumination or medical illumination, such as dyeing illumination for endoscopes. It should be noted that the laser illumination system can be used not only for endoscope staining illumination, but also for other endoscopic local illumination places, such as illumination of a uterine cavity suction tube.

As shown in fig. 1, in another preferred embodiment of the present invention, as shown in fig. 1, the number of the monochromatic laser sources is three, namely, a first laser source 21, a second laser source 22 and a third laser source 23; the first laser source 21 is located at the front side (i.e. the left side in fig. 1) of the prism 4, and preferably emits a first monochromatic light beam of blue. The second laser source 22 and the third laser source 23 are both located at the rear side (i.e. the right side in fig. 1) of the prism 4, the second laser source 22 and the third laser source 23 are respectively arranged at the front side and the rear side of the light mixer 5, and are preferably symmetrically arranged at the front side and the rear side of the light mixer 5; the second monochromatic light beam emitted by the second laser source 22 and the third monochromatic light beam emitted by the third laser source 23 are a green light beam and a red light beam, respectively.

As shown in fig. 1, in another preferred embodiment of the present invention, the three monochromatic laser sources all include a laser and a collimator 201 located between the laser and the prism 4, which are the first laser 211, the second laser 221 and the third laser 231, respectively, so that the monochromatic light beams emitted by the lasers are shaped and collimated by the collimator 201 and then emitted to the prism 4, and the collimator 201 couples the light into the optical fiber 7 with the maximum efficiency.

As shown in fig. 1, in another preferred embodiment of the present invention, an angle adjusting mechanism 8 is respectively disposed at the second laser source 22 and the third laser source 23, the angle adjusting mechanism 8 includes a sliding slot 85, in this embodiment, the laser source is slidably connected to the sliding slot 85, and the two angle adjusting mechanisms 8 can be separately provided with two sliding slots 85, and can also share one sliding slot 85 with a longer arc length. The laser source is connected with a screw seat 84, for example, a screw seat 84 is connected to each of the second laser 221 and the third laser 231 in fig. 1; the screw rod seat 84 is in threaded connection with a screw rod 83, and the other end of the screw rod 83 is rotatably connected with a fixed screw rod limiting seat 82; the second laser 221 and the third laser 231 can slide in the sliding groove 85 by rotating the two screws 83, so that the plurality of monochromatic lights emitted from the prism 4 can intersect at the fixing point a of the light mixer 5. In practice, in order to rotate the screw 83, a knob 81 fixed to the screw 83 may be provided on the screw stopper 82, and the laser may slide in the chute 8 by rotating the knob 81.

When the sliding groove 85 is an arc-shaped groove, the screw seat 84 is rotationally connected with the laser source; when the circle center of the circle of the arc-shaped groove is not positioned on the rear surface 42 of the prism, the incidence angle and the incidence position of the monochromatic light beam emitted by the laser device entering the prism 4 can be adjusted by rotating the screw 83; when the center of the circle of the arc-shaped groove is on the rear surface 42 of the prism, the incidence angle of the monochromatic light beam emitted by the laser entering the prism 4 can be adjusted by rotating the screw 83; when the sliding groove is a strip-shaped groove, the screw rod seat 84 is fixedly connected with the laser source; by rotating the screw 83, the incidence position of the monochromatic light beam from the laser into the prism 4 can be adjusted.

As shown in fig. 1, in another preferred embodiment of the present invention, the prism 4 includes a front surface 41 and a rear surface 42, the front surface 41 is disposed in parallel with the rear surface 42, and the front surface 41 is coated with a film 411 that transmits the first monochromatic light beam, reflects the second monochromatic light beam, and reflects the third monochromatic light beam. The first monochromatic light beam emitted by the first laser source 21 enters from the prism front surface 41 and exits from the prism rear surface 42; the second monochromatic light beam emitted from the second laser source 22 and the third monochromatic light beam emitted from the third laser source 23 are incident from the prism rear surface 42, reflected by the prism front surface 41, and then emitted from the prism rear surface 42. After the angle adjusting mechanism 8 adjusts the incident angle and/or the incident position of the monochromatic light beam entering the prism 4, the three monochromatic light beams emitted from the rear surface 42 by the prism 4 are intersected on the light mixer 5.

Specifically, as shown in fig. 1, the first monochromatic light beam emitted from the first laser source 21 enters perpendicularly to the prism front surface 41, and after being transmitted by the prism front surface 41, the first monochromatic light beam exits perpendicularly from the rear surface to the light mixer fixing point a. The second monochromatic light beam emitted by the second laser source 22 obliquely enters the prism rear surface 42 in a direction close to the light mixer 5, is refracted by the rear surface and then enters the front surface, is reflected by the front surface and then enters the rear surface, is refracted by the rear surface and then exits to the light mixer fixed point a. Since the third laser source 23 and the second laser source 22 are symmetrically arranged relative to the light mixer 5, the reflection and refraction conditions of the third monochromatic light beam emitted by the third laser source 23 in the prism 4 are the same as those of the second monochromatic light beam emitted by the second laser source 22, and the description is omitted here; the three light beams travel in the prism 4 without intersecting each other.

As shown in fig. 1, in another preferred embodiment of the present invention, a light distribution module 9 is further connected to the end of the optical fiber 7, as can be seen from fig. 2, the light distribution module 9 includes a first lens 91, a second lens 92 and a light uniformizing plate 93 which are sequentially arranged from front to back (i.e., from left to right in fig. 2), and the distance between the first lens 91 and the second lens 92 is adjustable. Specifically, the first lens 91 is mounted on a first lens holder 94, the second lens 92 and the dodging plate 93 are mounted on a second lens holder 96, and the first lens holder 94 is in threaded connection with the second lens holder 96; thereby rotating the second lens holder 96 to move the second lens 92 away from or close to the first lens 91, thereby adjusting the distance between the first lens 91 and the second lens 92.

Preferably, as shown in fig. 2, the inner wall of the rear portion of the first lens holder 94 has a first annular platform 941, the rear end of the first lens 91 is clamped on the first annular platform 941, the front end of the first lens 91 is fixed by a first press ring 95, and specifically, the first press ring 95 can be in interference fit with the inner wall of the front portion of the first lens holder 94; thereby mounting the first lens 91 on the first lens holder 94. The inner wall of the front part of the second lens holder 96 has a second ring platform 961, and the front part of the second ring platform 961 extends inwards to form a third ring platform 962; the front end of the second lens 92 is clamped on the third ring platform 962, the dodging plate 93 is clamped on the second ring platform 961, a spacing ring 97 is pressed between the second lens 92 and the dodging plate 93, the rear end of the dodging plate 93 is fixed through a second pressing ring 98, and particularly the second pressing ring 98 can also be in interference fit with the inner wall of the rear part of the second lens seat 96; thereby mounting the second lens 92 and the dodging plate 93 on the second lens holder 96.

As shown in fig. 1, in another preferred embodiment of the present invention, the laser lighting system further includes a heat dissipation base 3 for dissipating heat of the laser, and the first laser source 21, the second laser source 22, the third laser source 23, the prism 4 and the light mixer 5 can be mounted on the heat dissipation base 3. The first laser 211, the second laser 221 and the third laser 231 convert electric energy into light energy, and a part of the electric energy is converted into heat energy, and the part of the heat energy is guided into the surrounding air through the heat dissipation base 3. Of course, the sliding slot 85 of the angle adjusting mechanism 8 can be disposed on the heat dissipating base 3, and the screw limiting seat 82 can also be mounted on the heat dissipating base 3.

Example two

The structure principle of the present embodiment is substantially the same as that of the first embodiment, except that the incident angle of the first monochromatic light beam emitted from the first laser source 21 entering the prism 4 is different, specifically, as shown in fig. 3, in the present embodiment, the first monochromatic light beam emitted from the first laser source 21 is incident obliquely to the front surface 41 of the prism, is refracted by the front surface 41 and then is incident to the rear surface 42, is refracted by the rear surface 42 and then is emitted in parallel to the incident direction, and finally is emitted to the fixed point a on the light mixer 5. In the present embodiment, since the first monochromatic light beam emitted from the first laser source 21 is not incident perpendicular to the prism front surface 41 or is not emitted perpendicular to the prism rear surface 42, that is, the first monochromatic light beam is incident on and emitted from the prism 4 under the influence of the refractive index thereof, the angle adjusting mechanism 8 may be disposed at the first laser source 21, and the sliding groove 85 may be a bar-shaped groove.

EXAMPLE III

The principle of construction of this embodiment is substantially the same as that of the first and second embodiments, except that the prism front surface 41 and the prism rear surface 42 are obliquely arranged, i.e., can intersect after being extended, as shown in fig. 4 to 7.

In one embodiment, as shown in fig. 4 and 5, the prism front surface 41 is disposed longitudinally and the prism rear surface 42 is disposed obliquely. In fig. 4, the first monochromatic light beam emitted from the first laser source 21 is emitted perpendicularly to the front surface 41 of the prism, and the first monochromatic light beam is transmitted through the front surface 41, refracted from the rear surface 42 of the prism, and then emitted to the fixed point a of the light mixer; in the present embodiment, the angle adjusting mechanism 8 may be provided also at the first laser light source 21, and the chute may be a longitudinal strip-shaped chute. In fig. 5, the first monochromatic light beam emitted from the first laser source 21 is emitted obliquely to the front surface 41 of the prism, and the first monochromatic light beam is refracted by the front surface 41, refracted by the rear surface 42 of the prism, and then emitted to the fixed point a of the light mixer; in the present embodiment, the angle adjustment mechanism 8 may be provided also in the first laser light source 21, and the chute may be a strip-shaped groove. The transmission process of the second monochromatic light beam emitted by the second laser source 22 and the third monochromatic light beam emitted by the third laser source 23 in the prism 4 is the same as that of the first embodiment, and is not described herein again.

In another embodiment, as shown in fig. 6 and 7, the prism front surface 41 is obliquely disposed and the prism rear surface 42 is longitudinally disposed. In fig. 6, the first monochromatic light beam emitted from the first laser source 21 is emitted perpendicularly to the front surface 41 of the prism, and the first monochromatic light beam is transmitted through the front surface 41, refracted from the rear surface 42 of the prism, and then emitted to the fixed point a of the light mixer; in the present embodiment, the angle adjustment mechanism 8 may be provided also in the first laser light source 21, and the chute may be a strip-shaped groove. In fig. 7, the first monochromatic light beam emitted from the first laser source 21 is emitted obliquely to the front surface 41 of the prism, and the first monochromatic light beam is refracted by the front surface 41 and then vertically and directly emitted from the rear surface 42 of the prism to the fixed point a of the light mixer; in the present embodiment, the angle adjustment mechanism 8 may be provided also in the first laser light source 21, and the chute may be a strip-shaped groove. The transmission process of the second monochromatic light beam emitted by the second laser source 22 and the third monochromatic light beam emitted by the third laser source 23 in the prism 4 is the same as that of the first embodiment, and is not described herein again.

The three monochromatic light beams are adjusted by the prism 4 and then enter the fixed point A of the light mixer in various ways, which is not described again here; in practice, the number of prisms 4 is not limited to one, and two prisms 4 may be provided to achieve the above purpose, for example, a method of generating light source using two prisms as disclosed in CN 103969931A.

It should be noted that when the monochromatic light beam emitted from the laser light source is perpendicularly incident on the prism and perpendicularly emitted therefrom, since the monochromatic light beam incident on and emitted from the prism is not affected by the refractive index of the prism, the angle adjusting mechanism 8 may not be provided at the laser light source, and when the monochromatic light beam is incident on and emitted from the prism in another manner, the angle adjusting mechanism 8 is preferably provided at the laser light source.

Example four

The structural principle of the present embodiment is basically the same as that of the first to third embodiments, and the difference is that the number of the monochromatic laser sources is four, that is, the fourth laser source 24 is added on the basis of the three laser sources, the ultraviolet light beam is emitted by the fourth laser source 24, the wavelength of the ultraviolet light is shortest, when the red, blue and green light beams are used to configure the ultraviolet light according to the color matching principle, the efficiency is low, and the ultraviolet light can be set independently in practice to improve the efficiency; when the fourth laser source 24 is used alone, the other three laser sources may be turned off. In this embodiment, the angle adjusting mechanisms 8 may be disposed at the four laser sources, and the sliding grooves are arc-shaped grooves or strip-shaped grooves.

As shown in fig. 8, it is preferable that the prism front surface 41 is disposed parallel to the rear surface 41, the fourth laser light source 24 is located on the front side of the prism 4, and the first laser light source 21 and the second laser light source 22 are disposed on both sides of the forward extension line of the light mixer 5. The first monochromatic beam/the fourth monochromatic beam emitted by the first laser source 21/the fourth monochromatic beam emitted by the fourth laser source 24 are respectively emitted obliquely to the prism front surface 41, refracted by the prism front surface 41 and then emitted to the prism rear surface 42, refracted by the prism rear surface 42 and then emitted in parallel to the incident direction, and finally emitted to the fixed point a on the light mixer 5.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A laser lighting system comprises a plurality of monochromatic laser sources and corresponding drivers thereof, wherein laser emitted by a laser exit port of each laser source is adjusted by a prism and then enters a light mixer; the light outlet of the light mixer is provided with a coupler, and the coupler is connected with an optical fiber; the laser beam splitter is characterized in that angle adjusting mechanisms are arranged at part or all of the laser sources and used for adjusting the incidence angle and/or the incidence position of the monochromatic beams emitted by the laser sources entering the prism, so that the plurality of monochromatic beams emitted from the prism can intersect on the light mixer.

2. The laser lighting system as claimed in claim 1, wherein the angle adjusting mechanism comprises a sliding groove, the laser source is slidably connected with the sliding groove, a screw seat is connected with the laser source, a screw is connected with the screw seat in a threaded manner, and the other end of the screw is rotatably connected with a fixed screw limiting seat; rotating the screw, the laser source can slide in the chute.

3. A laser illumination system as claimed in claim 1, characterized in that the number of monochromatic laser sources is three or four; when the number of the monochromatic laser sources is three, the three monochromatic beams are respectively red, green and blue beams; when the number of the monochromatic laser sources is four, the four monochromatic beams are respectively red, green, blue and purple beams.

4. A laser illumination system as claimed in claim 3, wherein the number of said monochromatic laser sources is three, respectively a first laser source, a second laser source and a third laser source;

the prism comprises a front surface and a rear surface, the front surface and the rear surface are arranged in parallel or the front surface and the rear surface are arranged in an inclined manner, and the front surface is plated with a film layer which transmits the first monochromatic light beam and reflects the second monochromatic light beam and the third monochromatic light beam;

the first monochromatic light beam emitted by the first laser source enters from the front surface and is emitted from the rear surface, and the second monochromatic light beam emitted by the second laser source and the third monochromatic light beam emitted by the third laser source both enter from the rear surface and are emitted from the rear surface after being reflected by the front surface;

after the angle adjusting mechanism adjusts the incident angle and/or the incident position of the monochromatic light beam entering the prism, the three monochromatic light beams emitted from the rear surface of the prism are intersected on the light mixer.

5. The laser illumination system of claim 4, wherein the prism front surface and the prism back surface are arranged in parallel, and the second laser source and the third laser source are respectively located at two sides of the light mixer;

the first monochromatic light beam emitted by the first laser source is incident in a direction perpendicular to the front surface, is transmitted by the front surface and then is emitted from the rear surface perpendicularly, or is incident in a direction inclined to the front surface, the angle adjusting mechanism is arranged at the first laser source, the first monochromatic light beam is refracted by the front surface and then is emitted to the rear surface, and the first monochromatic light beam is refracted by the rear surface and then is emitted to a fixed point A of the light mixer in a direction parallel to the incident direction;

second monochromatic beam that the second laser source sent and third monochromatic beam that the third laser source sent are respectively to being close to the direction of mixing the optical ware is to slope to the rear surface jets into, and second laser source and third laser source department all are equipped with angle adjustment mechanism, second monochromatic beam/third monochromatic beam penetrate to the front surface after the rear surface refraction, and second monochromatic beam/third monochromatic beam penetrate to the rear surface after the front surface reflection, penetrate to fixed point A department of mixing the optical ware after the rear surface refraction again.

6. A laser illumination system as claimed in claim 4, wherein said first laser source emits a blue beam, said second laser source emits a green beam, and said third laser source emits a red beam.

7. A laser illumination system as claimed in any one of claims 1 to 6 wherein three said monochromatic laser sources each comprise a laser and a collimator between the laser and the prism.

8. The laser illumination system as claimed in claim 7, wherein a light distribution module is further connected to a terminal of the optical fiber, the light distribution module includes a first lens, a second lens and a light homogenizing plate, which are sequentially arranged from front to back, and a distance between the first lens and the second lens is adjustable.

9. A laser illumination system as claimed in claim 8, wherein the first lens is mounted on a first lens holder and the second lens is mounted on a second lens holder, the first lens holder being threadably connected to the second lens holder.

10. The laser illumination system as claimed in claim 9, wherein the inner wall of the rear part of the first lens holder is provided with a first ring platform, the rear end of the first lens is clamped on the first ring platform, and the front end of the first lens is fixed by a first press ring;

the inner wall of the front part of the second lens seat is provided with a second ring platform, the front part of the second ring platform extends inwards to form a third ring platform, the front end of the second lens is clamped on the third ring platform, the light homogenizing plate is clamped on the second ring platform, a spacing ring is pressed between the second lens and the light homogenizing plate, and the rear end of the light homogenizing plate is fixed through a second pressing ring.