Linear light source

Abstract

The utility model relates to a linear light source, which comprises a laser tube, an aspherical lens, a diaphragm, a trapezoidal prism and a cylindrical mirror which are distributed on the same central axis, laser output by the laser tube sequentially passes through the aspherical lens and the diaphragm and then is divided into a large laser beam and two small laser beams symmetrically distributed on the two sides of the large laser beam, the two small laser beams are reflected out through the two slopes of the trapezoidal prism respectively, and two strong light points are formed on a projected target; the large laser beam sequentially passes through the middle part of the trapezoidal prism and the cylindrical mirror to form sector laser of which the sector angle exceeds 180 degrees; the sector laser forms a laser line on a projected target; the two small laser beams are distributed in the 0-degree direction and the 180-degree direction of the sector laser respectively, and strong light points are formed on the laser lines respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser light source technical field, concretely relates to a linear light source. BACKGROUND

[0002] Chinese patent document CN209842192U discloses a linear light source, including the casing, the mounting groove is set up on the casing front end surface, the mounting cavity is set up from the casing rear end surface to the casing inside, the laser collimation point light source is assembled in the mounting cavity, the mounting cavity is communicated with the mounting groove through the light hole, the mounting groove is formed with the positioning groove in the two sides of the light hole, the cylindrical mirror is installed in the positioning groove, and the positioning groove can have different configurations, and point contact or cylindrical surface line contact is formed with the end surface of the cylindrical mirror.

[0003] The cylindrical mirror linear light source of the existing laser line marker has the following defects:

[0004] 1. The light source can only emit a laser line without a strong light point.

[0005] 2. All cylindrical mirror linear light sources with a laser point on the market have only one strong light point, which is basically in the center of the light line and can only be used as a strong light point, and cannot indicate 0° and 180° directions. INVENTION CONTENTS

[0006] The utility model aims at providing a linear light source, which can indicate strong light points of 0° and 180° directions on both sides.

[0007] In order to achieve the above task, the utility model adopts the following technical scheme: a linear light source, including a laser tube, an aspherical lens, an aperture, a trapezoidal prism and a cylindrical mirror which are distributed on the same central axis; the laser output by the laser tube passes through the aspherical lens and the aperture in sequence, and is divided into a large laser beam and two small laser beams which are symmetrically distributed on both sides of the large laser beam, the two small laser beams are reflected by the two inclined surfaces of the trapezoidal prism respectively, and two strong light points are formed on the target to be projected; the large laser beam passes through the middle part of the trapezoidal prism and the cylindrical mirror in sequence to form a fan laser with a fan angle of more than 180°; the fan laser forms a laser line on the target to be projected; the two small laser beams are respectively distributed on the 0° and 180° directions of the fan laser, and form strong light points P on the laser line L respectively.

[0008] The trapezoidal prism is arranged in the mounting groove of the prism seat to form a trapezoidal prism assembly.

[0009] The cylindrical mirror is arranged in the cylindrical mirror seat, the cylindrical mirror seat is matched with the above-mentioned prism seat through the limiting pin, and the cylindrical mirror, the cylindrical mirror seat and the limiting pin constitute a cylindrical mirror assembly.

[0010] The preferred scheme is that the aspheric lens is arranged in the mounting groove at the top of the lens barrel, the laser tube is arranged in the laser tube seat, and the laser tube seat is arranged in the inner cavity of the bottom of the lens barrel and constitutes the collimated point light source assembly.

[0011] The preferred scheme is that the prism seat is provided with a prism adjusting screw for adjusting the position of the trapezoidal prism relative to the central axis.

[0012] The preferred scheme is that the cylindrical mirror seat is provided with a cylindrical mirror adjusting screw one, the prism seat is provided with a cylindrical mirror adjusting screw two, and the relative positions of the laser line and the strong light point are adjusted through the cylindrical mirror adjusting screws one and two.

[0013] The preferred scheme is that the large laser beam enters from the middle of the smaller area plane of the trapezoidal prism and exits from the middle of the larger area plane when passing through the trapezoidal prism.

[0014] The preferred scheme is that the diaphragm comprises a substrate, all square through holes in the center of the substrate, and circular holes symmetrically arranged on both sides of the square through holes.

[0015] The technical effect of the utility model is that the linear light source first divides the laser beam collimated by the aspheric lens into two small laser beams and a large laser beam; then reflects the two small laser beams by a trapezoidal prism to form laser strong light points at 0° and 180° directions on both sides of the linear light source; the large laser beam passes through a cylindrical mirror made of high refractive material to form a laser line with a fan angle exceeding 180°; and the two strong light points are on the laser line and have higher brightness than the laser line. In the application, the fan laser with the fan angle exceeding 180° is projected on the adjacent three walls to form a continuous laser line, the center line of the linear light source is perpendicular to the front wall, and the two strong light points are projected on the left and right walls and on the laser line, thereby meeting the requirements of engineering construction. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded schematic view of the linear light source of the embodiment;

[0017] Figure 2 It is another exploded schematic view of the linear light source;

[0018] Figure 3 It is an exploded overall cross-sectional structure schematic view of the embodiment;

[0019] Figure 4 It is a schematic view of the laser line output by the linear light source of the prior art;

[0020] Figure 5The laser line light source output by the linear light source of the utility model is shown in the figure.

[0021] Figure 6 The plane structure of the diaphragm of the utility model is shown in the figure. Specific embodiment

[0022] As Figures 1-6 , the linear light source of the embodiment comprises a laser tube 13, an aspherical lens 10, a diaphragm 9, a trapezoidal prism 6 and a cylindrical mirror 2 which are distributed on the same central axis; the diaphragm 9 comprises a base plate 9-1, and all square through holes 9-2 are arranged in the center of the base plate, and circular holes 9-3 are symmetrically arranged on both sides of the square through holes 9-2.

[0023] The laser output by the laser tube 13 passes through the aspherical lens 10 and the diaphragm 9 in sequence, and is divided into two small laser beams (emitted from the circular holes 9-3 respectively) and a large laser beam (emitted from the square through holes 9-2) on the left and right, the two small laser beams are reflected out through the two inclined surfaces of the trapezoidal prism 6 respectively, and form two strong light points P on the target to be projected; the large laser beam passes through the middle part of the trapezoidal prism 6 and the cylindrical mirror 2 in sequence to form a fan laser with a fan angle of more than 180°; the fan laser forms a laser line L on the target to be projected, and the two small laser beams are distributed on the 0° and 180° directions of the fan laser respectively, and form strong light points P on the laser line L respectively.

[0024] The cylindrical mirror 2 is arranged in a cylindrical mirror seat 4, the cylindrical mirror seat 4 is matched to the prism seat 7 through a limiting pin 3, and the cylindrical mirror, the cylindrical mirror seat and the limiting pin 3 form a cylindrical mirror assembly 40.

[0025] The trapezoidal prism 6 is arranged in a mounting groove of the prism seat 7 to form a trapezoidal prism assembly 70.

[0026] The aspherical lens 10 is arranged in a mounting groove at the top of a lens barrel 11, the laser tube 13 is arranged in a laser tube seat 12, the laser tube seat 12 is arranged in the inner cavity at the bottom of the lens barrel 11, and a collimated point light source assembly 110 is formed.

[0027] Four prism adjusting screws 5 are arranged on the prism seat 7, which are used for adjusting the position of the trapezoidal prism 6 relative to the central axis, so that the two small laser beams are distributed on the 0° and 180° directions of the fan laser respectively, and form strong light points P on the laser line L respectively.

[0028] Two cylindrical mirror adjusting screws one 1 are arranged on the cylindrical mirror seat 4, and two cylindrical mirror adjusting screws two 8 are arranged on the prism seat 7, and the relative positions of the laser line and the strong light points are adjusted through the cylindrical mirror adjusting screws one and two.

[0029] The large laser beam is injected from the middle of the small area plane of the trapezoidal prism 6 and is ejected from the middle of the large area plane.

[0030] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications extended from the spirit of the present application are still within the protection scope of the present application.

Claims

1. A linear light source, comprising: The laser tube (13) and cylindrical mirror (2) are characterized by further comprising: an aspherical lens (10), an aperture (9), and a trapezoidal prism (6); the laser output from the laser tube (13) passes through the aspherical lens (10) and the aperture (9) in sequence, and is divided into a large laser beam and two small laser beams symmetrically distributed on both sides of the large laser beam. The two small laser beams are reflected by the two inclined surfaces of the trapezoidal prism (6) and form two strong light spots (P) on the projected target. The large laser beam passes through the middle of the trapezoidal prism (6) and the cylindrical mirror (2) in sequence to form a fan-shaped laser beam with a fan angle of more than 180°. The fan-shaped laser beam forms a laser line (L) on the projected target. The two small laser beams are distributed in the 0° and 180° directions of the fan-shaped laser beam, and form strong light spots (P) on the laser line (L) respectively.

2. The linear light source as described in claim 1, characterized in that, The trapezoidal prism (6) is disposed in the mounting groove of the prism base (7) to form a trapezoidal prism assembly.

3. The linear light source as described in claim 2, characterized in that, The cylindrical mirror (2) is located inside the cylindrical mirror base (4), which is fitted onto the prism base (7) by a limiting pin (3).

4. The linear light source as described in any one of claims 1–3, characterized in that, The aspherical lens (10) is installed in the mounting groove at the top of the lens barrel (11), the laser tube (13) is installed in the laser tube holder (12), the laser tube holder (12) is installed in the inner cavity at the bottom of the lens barrel (11), and together they form a collimating point light source assembly.

5. The linear light source as described in any one of claims 2-3, characterized in that, The laser tube (13), aspherical lens (10), aperture (9), trapezoidal prism (6) and cylindrical mirror (2) are distributed on the same central axis.

6. The linear light source as described in claim 5, characterized in that, The prism mount (7) is provided with a prism adjustment screw (5) for adjusting the position of the trapezoidal prism (6) relative to the central axis.

7. The linear light source as described in claim 3, characterized in that, The cylindrical mirror mount (4) is provided with a cylindrical mirror adjustment screw one (1), and the prism mount (7) is provided with a cylindrical mirror adjustment screw two (8). The relative position of the laser line and the strong light point is adjusted by the cylindrical mirror adjustment screw one and two.

8. The linear light source as described in claim 1, characterized in that, When the large laser beam passes through the trapezoidal prism (6), it enters from the center of the smaller plane of the trapezoidal prism (6) and exits from the center of the larger plane.

9. The linear light source as described in claim 1, characterized in that, The aperture (9) includes a substrate (9-1), with a central square through hole (9-2) on the substrate and round holes (9-3) symmetrically arranged on both sides of the square through hole (9-2).

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