CN209879071U - A 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

A laser lighting system

technical field

The utility model belongs to the technical field of lighting systems, in particular to a laser lighting system.

Background technique

At present, the use of optical fibers for lighting mainly uses LED coupling optical fibers or laser coupling optical fibers to excite phosphors for illumination. Among them, the efficiency of LED coupling fiber is low, and the LED light-emitting area is large, and the fiber diameter required for coupling is also relatively thick, which increases the cost; if the LED light source is coupled into a thin fiber, the coupling efficiency is extremely low, and a lot of resources will be wasted. Taking advantage of the characteristics of small laser divergence angle, concentrated energy, long propagation distance, narrow bandwidth, and strong collimation, the coupling efficiency of laser coupling into optical fiber is higher than that of LED. However, the lighting method in which the phosphor is excited after the laser is coupled to the optical fiber cannot flexibly control the light color of the emitted light, which limits the application of special lighting, such as dyeing lighting for endoscopes.

In the way of laser coupling to optical fiber, the three monochromatic light sources of red, blue and green are often processed by prism reflection and refraction to intersect in the optical mixer, and then coupled into the optical fiber through the coupler after the action of the optical mixer. Guide the coupled light to the designated lighting position. However, different batches or different material components or different sizes of prisms have different refractive indices, so the three beams of monochromatic light sources cannot intersect after being acted on by the prism, resulting in poor light mixing effect of the light mixer, which cannot meet the requirements. lighting light.

Utility model content

The utility model aims to solve the technical problems existing in the prior art. The purpose of the utility model is to provide a laser lighting system, which can adjust the incident angle and/or incident position of at least one beam of monochromatic light source, so that three beams Light sources can intersect.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a laser lighting system, including a plurality of monochromatic laser sources and their corresponding drivers, and the laser light emitted from the laser outlet of the laser source is injected into the mixed light after the direction is adjusted by the prism The light outlet of the light mixer is provided with a coupler, and the coupler is connected with an optical fiber; part or all of the laser sources are provided with an angle adjustment mechanism, which adjusts the incident angle and/or the monochromatic beam emitted by the laser source into the prism Incident position, so that multiple beams of monochromatic light emitted from the prism can intersect on the light mixer.

In the above technical solution, the laser source is provided with an angle adjustment mechanism. When the prisms have different refractive indices due to different sizes, materials or batches, the angle adjustment mechanism can adjust the incident angle and/or incidence angle of the monochromatic beam emitted by the laser source into the prism. position, so that multiple beams of monochromatic light emitted by the prism can intersect on the light mixer.

In a preferred embodiment of the present invention, the angle adjustment mechanism includes a chute, the laser source is slidably connected with the chute, the laser source is connected with a screw seat, the screw seat is threaded with a screw, and the other end of the screw is rotatably connected with a Fixed screw limit seat; turn the screw, the laser source can slide in the chute. By setting the screw, the screw is rotatably connected with the fixed screw limit seat, and when the screw is rotated, the laser source slides in the chute, thereby changing the incident angle and/or the incident position of the monochromatic beam entering the prism.

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

Red, blue and green three kinds of monochromatic laser sources can obtain different colors of illumination light according to the principle of color matching, but the wavelength of purple light is the shortest. When red, blue and green light beams are used to configure purple light, the efficiency is low. In practice The purple light can be set separately to improve efficiency.

In a preferred embodiment of the present utility model, the number of monochromatic laser sources is three, namely the first laser source, the second laser source and the third laser source;

The prism includes 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 obliquely, and the front surface is coated with a film that transmits the first monochromatic beam, reflects the second monochromatic beam and the third monochromatic beam Floor;

The first monochromatic beam emitted by the first laser source is injected from the front surface and emitted from the rear surface, the second monochromatic beam emitted by the second laser source and the third monochromatic beam emitted by the third laser source are both injected from the rear surface, After being reflected by the front surface, it is emitted from the back surface;

After adjusting the incident angle and/or incident position of the monochromatic light beam entering the prism through the angle adjustment mechanism, the three monochromatic light beams emitted from the rear surface of the prism intersect on the light mixer.

In the above technical solution, the three monochromatic light beams are transmitted, reflected and refracted by the front surface and the rear surface of the prism, and finally emitted from the rear surface of the prism and intersect on the light mixer. The prism has a simple structure and is easy to manufacture.

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

The first monochromatic beam emitted by the first laser source is incident perpendicular to the front surface, and the first monochromatic beam is transmitted perpendicular to the rear surface after being transmitted through the front surface, or the first monochromatic beam emitted by the first laser source is inclined to the front surface Injection, the first laser source is equipped with the angle adjustment mechanism, the first monochromatic beam is refracted by the front surface and then projected to the rear surface, and then refracted by the rear surface and then emitted parallel to the direction of incidence to the fixed point A of the light mixer place;

The second monochromatic light beam emitted by the second laser source and the third monochromatic light beam emitted by the third laser source are obliquely incident towards the rear surface in a direction close to the light mixer respectively, and both the second laser source and the third laser source are The angle adjustment mechanism is provided, the second monochromatic beam/third monochromatic beam is refracted by the rear surface and then hits the front surface, and the second monochromatic beam/third monochromatic beam is reflected by the front surface and then hits the rear surface, After being refracted by the rear surface, it is emitted to the fixed point A of the light mixer.

In the above-mentioned 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 perpendicular to the front surface of the prism, when the first monochromatic light beam enters and exits the prism, the The transmission path has nothing to do with the refractive index of the prism, and there is no need to set an angle adjustment mechanism at this time.

In another preferred embodiment of the present invention, the first laser source emits a blue beam, the second laser source emits a green beam, and the third laser source emits a red 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 to emit monochromatic laser, and the collimator is used to shape and collimate the monochromatic laser emitted by the laser, and then emit it to the prism, so that the light can be coupled into the optical fiber with maximum efficiency.

In another preferred embodiment of the present utility model, the end of the optical fiber is also connected with a light distribution module, and the light distribution module includes a first lens, a second lens and a dodging plate arranged in sequence from front to back, the first lens and the second The distance between the lenses is adjustable.

The light emitted by the optical fiber passes through the light distribution function of the light distribution system, and the emitted light is adjusted in terms of irradiation angle and spot uniformity to ensure the quality of the irradiated spot. The first lens and the second lens work together to adjust the light output angle of the lighting system, and the uniform light plate is used to homogenize the emitted light spots.

In another preferred embodiment of the present utility model, the first lens is installed on the first lens holder, the second lens is installed on the second lens holder, and the first lens holder and the second lens holder are screwed together. Thus, by rotating the second lens seat, the second lens can be moved away from or close to the first lens, thereby adjusting the distance between the first lens and the second lens, and the adjustment method is simple.

In another preferred embodiment of the present utility model, the inner wall of the rear part of the first lens seat has 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 passed through the first pressing ring. ring fixed;

The inner wall of the front part of the second lens seat has a second ring platform, and the front part of the second ring platform extends inwardly to have a third ring platform, the front end of the second lens is clamped on the third ring platform, and the uniform light plate is clamped on the second ring platform. On the ring platform, a spacer ring is pressed between the second lens and the dodging plate, and the rear end of the dodging plate is fixed by the second pressing ring.

Install the first lens on the first lens holder through the first ring platform and the first pressure ring, install the uniform plate on the second lens holder through the second ring platform and the second pressure ring, and install the uniform plate on the second lens holder through the third ring platform and the spacer. The second lens is installed on the second lens seat by the ring and the dodging plate, and the setting of the spacer makes it possible to keep a certain distance between the second lens and the dodging plate.

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

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 is a schematic top view of the laser lighting system of the first embodiment.

Fig. 2 is a schematic diagram of the internal structure of the light distribution module in the laser lighting system of the first embodiment.

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

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

Fig. 5 is the second schematic diagram of the transmission paths of the three monochromatic light beams in the prism in the laser illumination system of the third embodiment.

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

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

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

The reference numerals in the drawings of the description include: drive controller 1, collimator 201, first laser source 21, first laser 211, second laser source 22, second laser 221, third laser source 23, third Laser 231, fourth laser source 24, heat dissipation base 3, prism 4, prism front surface 41, film layer 411, prism rear surface 42, optical mixer 5, coupler 6, optical fiber 7, angle adjustment mechanism 8, knob 81, Screw limit seat 82, screw 83, screw seat 84, chute 85, light distribution module 9, first lens 91, second lens 92, uniform light plate 93, first lens seat 94, first ring platform 941, first The pressure ring 95, the second lens seat 96, the second ring platform 961, the third ring platform 962, the spacer ring 97, the second pressure ring 98, and the fixed point A of the optical mixer.

Detailed ways

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the practical Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of the present utility model, unless otherwise stipulated and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be The internal communication between two elements may be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Embodiment one

This embodiment provides a laser lighting system, as shown in Figure 1, in a preferred embodiment of the present invention, it includes a plurality of monochromatic laser sources and their corresponding drivers, the specific light intensity of a single laser is according to The required color is determined by the principle of color matching, which is the prior art and will not be described in detail here. The drivers corresponding to multiple monochromatic laser sources are integrated in the drive controller 1, and the switch and output power of each laser source are controlled and adjusted by the drive controller 1. In practice, after the display panel is equipped, it can intuitively display the various lighting conditions of the entire system. Item indexes, such as: luminous flux, color temperature, color rendering index, color tolerance, etc.

The multiple monochromatic beams emitted from the laser outlets of multiple monochromatic laser sources are adjusted by the prism 4 and then injected into the light mixer 5; the light output port at the rear end of the light mixer 5 is provided with a coupler 6 connected to the optical fiber 7. Part or all of the laser sources are provided with an angle adjustment mechanism 8. When the refractive index of the prism 4 is different due to different materials, batches or sizes, the angle adjustment mechanism 8 adjusts the incident angle of the monochromatic beam emitted by the laser source into the prism 4. And/or the incident position, so that the multiple beams of monochromatic light emitted from the prism 4 can intersect on the light mixer 5, that is, the multiple beams of monochromatic light beams can all be incident on the fixed point A of the light mixer.

The multiple monochromatic beams emitted by multiple monochromatic laser sources are adjusted in direction by the prism 4, and then emitted to the fixed point A of the mixer. Light, such as warm white light, positive white light, blue light, red light, purple light, green light, etc.; the light emitted by the light mixer 5 is coupled into the optical fiber 7 through the collimation and focusing of the coupler 6, and the optical fiber 7 couples the coupled light Conducted to the designated lighting location.

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

As shown in Figure 1, in another preferred embodiment of the present utility model, as shown in Figure 1, the quantity of monochromatic laser source is three, is respectively the first laser source 21, the second laser source 22 and the first laser source 21 Three laser sources 23; the first laser source 21 is located on the front side of the prism 4 (ie, the left side in FIG. 1 ), preferably the first monochromatic beam emitted by it is a blue beam. The second laser source 22 and the third laser source 23 are all positioned at the rear side of the prism 4 (i.e. the right side in FIG. Both sides, preferably symmetrically arranged on the front and rear sides of the light mixer 5; the second monochromatic beam emitted by the second laser source 22 and the third monochromatic beam emitted by the third laser source 23 are green beam and red respectively beam.

As shown in Figure 1, in another preferred embodiment of the present utility model, three monochromatic laser sources all comprise laser and be positioned at the collimator 201 between laser and prism 4, be respectively the first laser 211, the first laser The second laser 221 and the third laser 231 , the monochromatic beam emitted by the laser is 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 maximum efficiency.

As shown in Figure 1, in another preferred embodiment of the present utility model, an angle adjustment mechanism 8 is respectively provided at the second laser source 22 and the third laser source 23, and the angle adjustment mechanism 8 includes a chute 85, In this embodiment, the laser source is slidably connected to the chute 85 , and the two angle adjustment mechanisms 8 can be separately provided with two chute 85 , or can share a chute 85 with a longer arc length. The laser source is connected with a screw seat 84, as shown in Fig. 1, the second laser 221 and the third laser 231 are respectively connected with a screw seat 84; the screw seat 84 is threaded with a screw 83, and the other end of the screw 83 is rotatably connected with a fixed screw stopper 82; rotate the two screw rods 83, the second laser 221 and the third laser 231 can slide in the chute 85, so that the multiple beams of monochromatic light emitted from the prism 4 can be fixed at the fixed point of the light mixer 5 A intersects. In practice, in order to turn the screw 83 conveniently, a knob 81 fixedly connected to the screw 83 can be provided on the screw limiting seat 82 , and the laser can slide in the chute 8 by turning the knob 81 .

When the chute 85 is an arc groove, the screw seat 84 is rotatably connected with the laser source; when the center of the circle where the arc groove is located is not on the rear surface 42 of the prism, by rotating the screw 83, the monochromatic beam emitted by the laser can be adjusted to enter the prism 4 incident angle and incident position; when the center of the circle where the arc groove is located is on the prism rear surface 42, by turning the screw 83, the incident angle of the monochromatic beam that the laser emits enters the prism 4 can be adjusted; when the chute is a bar shape When slotting, the screw seat 84 is fixedly connected with the laser source; by turning the screw 83, the incident position of the monochromatic beam emitted by the laser entering the prism 4 can be adjusted.

As shown in Figure 1, in another preferred embodiment of the utility model, the prism 4 includes a front surface 41 and a rear surface 42, the front surface 41 and the rear surface 42 are arranged in parallel, and the front surface 41 is coated with a first unit of transmission. color light beams, and a film layer 411 reflecting the second monochromatic light beams and the third monochromatic light beams. The first monochromatic beam that the first laser source 21 sends enters from the prism front surface 41 and emits from the prism rear surface 42; the second monochromatic beam that the second laser source 22 sends and the third monochromatic beam that the third laser source 23 sends The light beams all enter from the rear surface 42 of the prism, are reflected by the front surface 41 of the prism, and exit from the rear surface 42 of the prism. After adjusting the incident angle and/or incident position of the monochromatic light beams entering the prism 4 by the angle adjustment mechanism 8 , the three monochromatic light beams emitted from the rear surface 42 of the prism 4 intersect on the light mixer 5 .

Specifically, as shown in FIG. 1 , the first monochromatic light beam emitted by the first laser source 21 is incident perpendicular to the front surface 41 of the prism, and the first monochromatic light beam is transmitted from the rear surface to the mixed light after being transmitted through the front surface 41 of the prism. at fixed point A. The second monochromatic light beam that the second laser source 22 sends is obliquely incident on the prism rear surface 42 toward the direction close to the light mixer 5, and the second monochromatic light beam is incident on the front surface after being refracted by the rear surface, and the second monochromatic light beam After being reflected by the front surface, it is emitted to the rear surface, and then refracted by the rear surface, and then emitted to the fixed point A of the light mixer. Since the third laser source 23 and the second laser source 22 are arranged symmetrically with respect to the optical mixer 5, the third monochromatic light beam sent by the third laser source 23 is reflected and refracted in the prism 4 with the second laser source 22. The two monochromatic light beams are the same, and will not be repeated here; the transmission of the three light beams in the prism 4 does not intersect each other.

As shown in Figure 1, in another preferred embodiment of the present utility model, the end of the optical fiber 7 is also connected with a light distribution module 9, combined with Figure 2, it can be seen that the light distribution module 9 includes from front to back (that is, in Figure 2 The first lens 91, the second lens 92 and the dodging plate 93 are arranged in sequence from left to right, and the distance between the first lens 91 and the second lens 92 is adjustable. Specifically, the first lens 91 is installed on the first lens seat 94, the second lens 92 and the uniform light plate 93 are installed on the second lens seat 96, and the first lens seat 94 is screwed with the second lens seat 96; thereby rotating The second lens seat 96 can make the second lens 92 move away from or close to the first lens 91 , so as to adjust the distance between the first lens 91 and the second lens 92 .

Preferably, as shown in Figure 2, the inner wall at the rear of the first lens seat 94 has a first ring platform 941, the rear end of the first lens 91 is stuck on the first ring platform 941, and the front end of the first lens 91 passes through the first ring platform 941. The pressure ring 95 is fixed, specifically the first pressure ring 95 can be interference fit with the inner wall of the front part of the first lens holder 94 ; thus the first lens 91 is mounted on the first lens holder 94 . The inner wall of the second lens seat 96 front portion has a second ring platform 961, and the front portion of the second ring platform 961 extends inwardly with a third ring platform 962; the front end of the second lens 92 is stuck on the third ring platform 962, uniformly The light plate 93 is stuck on the second ring platform 961, and a spacer 97 is pressed between the second lens 92 and the light uniform plate 93. The rear end of the light uniform plate 93 is fixed by the second pressure ring 98, specifically the second pressure ring 98 is also It can be interference fit with the inner wall of the rear part of the second lens seat 96 ; thus the second lens 92 and the light uniform plate 93 are installed on the second lens seat 96 .

As shown in Figure 1, in another preferred embodiment of the present utility model, the laser lighting system also includes a heat dissipation base 3 for the laser to dissipate heat, 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 installed on the heat dissipation base 3. The first laser 211 , the second laser 221 and the third laser 231 not only convert electrical energy into light energy, but also convert a part of the electrical energy into heat energy, and this part of heat energy will be introduced into the surrounding air through the heat dissipation base 3 . Of course, the chute 85 in the angle adjustment mechanism 8 can be arranged on the heat dissipation base 3 , and the screw limit seat 82 can also be installed on the heat dissipation base 3 .

Embodiment two

The structural principle of this embodiment is basically the same as that of Embodiment 1, the difference is that the first monochromatic light beam emitted by the first laser source 21 enters the prism 4 at different incident angles, as shown in Figure 3 specifically, in this embodiment In the embodiment, the first monochromatic light beam emitted by the first laser source 21 is obliquely incident on the front surface 41 of the prism, the first monochromatic light beam is refracted by the front surface 41 and then hits the rear surface 42, and then parallel to the rear surface 42 after refraction It is emitted in the incident direction and finally reaches the fixed point A on the light mixer 5 . In this embodiment, since the first monochromatic light beam emitted by the first laser source 21 is not incident perpendicular to the front surface 41 of the prism, nor is it emitted perpendicular to the rear surface 42 of the prism, that is, the first monochromatic light beam enters and exits the prism 4 is affected by its refractive index, so the angle adjustment mechanism 8 can also be provided at the first laser source 21, and the slide groove 85 can be a bar-shaped groove.

Embodiment Three

The structural principle of this embodiment is basically the same as that of Embodiment 1 and Embodiment 2, the difference is that, as shown in Figure 4-7, the front surface 41 and the rear surface 42 of the prism are arranged obliquely, that is, they can intersect after being extended .

In one embodiment, as shown in FIG. 4 and FIG. 5 , the front surface 41 of the prism is arranged longitudinally, and the rear surface 42 of the prism is arranged obliquely. In Fig. 4, the first monochromatic beam emitted by the first laser source 21 is emitted perpendicular to the front surface 41 of the prism, and the first monochromatic beam is transmitted through the front surface 41 and then refracted from the rear surface 42 of the prism to the fixed point A of the light mixer In this embodiment, the angle adjustment mechanism 8 can also be set at the first laser source 21, and the chute is a longitudinal bar-shaped groove. In Fig. 5, the first monochromatic light beam emitted by the first laser source 21 is obliquely emitted from the front surface 41 of the prism. At the fixed point A; in this embodiment, an angle adjustment mechanism 8 may also be provided at the first laser source 21, and the chute is a bar-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 will not be repeated here.

In another embodiment, as shown in FIG. 6 and FIG. 7 , the front surface 41 of the prism is arranged obliquely, and the rear surface 42 of the prism is arranged vertically. In Fig. 6, the first monochromatic light beam emitted by the first laser source 21 is emitted perpendicular to the front surface 41 of the prism, and the first monochromatic light beam is transmitted through the front surface 41 and then refracted from the rear surface 42 of the prism to the fixed point A of the light mixer In this embodiment, the angle adjustment mechanism 8 can also be set at the first laser source 21, and the chute is a bar-shaped groove. In Fig. 7, the first monochromatic light beam emitted by the first laser source 21 is obliquely emitted from the front surface 41 of the prism, and the first monochromatic light beam is refracted by the front surface 41 and then vertically shoots to the fixed point A of the light mixer from the rear surface 42 of the prism ; In this embodiment, the angle adjustment mechanism 8 can also be set at the first laser source 21, and the chute is a bar-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 will not be repeated here.

The three kinds of monochromatic light beams are injected into the fixed point A of the light mixer after the direction is adjusted by the prism 4. There are many ways, which will not be repeated here; in practice, the number of prisms 4 is not limited to one, and two triangular prisms 4 can also be set to achieve the above-mentioned Purpose, such as the method disclosed in CN103969931A using two triangular prisms to generate a light source.

It should be pointed out that when the monochromatic beam emitted by the laser source enters the prism vertically and exits vertically, since the monochromatic beam enters and exits the prism and is not affected by the refractive index of the prism, the angle adjustment mechanism 8 may not be provided at the laser source. , when the monochromatic beam enters the exit prism in other ways, it is preferable to set an angle adjustment mechanism 8 at the laser source.

Embodiment four

The structural principle of this embodiment is basically the same as that of Embodiment 1 to Embodiment 3, except that the number of monochromatic laser sources is four, that is, a fourth laser source 24 is added on the basis of the above three laser sources. , the fourth laser source 24 emits a purple light beam, and the purple light has the shortest wavelength. When using three kinds of red, blue and green light beams to configure the purple light according to the color matching principle, the efficiency is low. In practice, the purple light can be set separately to improve the efficiency; When the fourth laser source 24 is used alone, the other three laser sources can be turned off. In this embodiment, an angle adjustment mechanism 8 can be provided at each of the four laser sources, and the chute is an arc-shaped groove or a bar-shaped groove.

As shown in Figure 8, the preferred prism front surface 41 is arranged parallel to the rear surface 41, the fourth laser source 24 is positioned at the front side of the prism 4, and the first laser source 21 and the second laser source 22 are arranged on the light mixer 5 and extend forward. both sides of the line. The first monochromatic light beam sent by the first laser source 21/the fourth monochromatic light beam sent by the fourth laser source 24 are respectively obliquely emitted from the front surface 41 of the prism, and the first monochromatic light beam/the fourth monochromatic light beam pass through the front surface 41 of the prism After being refracted, it is projected to the rear surface 42 of the prism, then refracted by the rear surface 42 of the prism, and then emitted parallel to the incident direction, and finally reaches the fixed point A on the light mixer 5 .

In the description of this specification, descriptions referring to the terms "preferred embodiment", "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the embodiments are combined Specific features, structures, materials, or characteristics described in or examples are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention 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.