Laser calibrated scale

Abstract

The invention relates to the technical field of laser measuring equipment, in particular to a laser graduated scale which comprises a shell, a laser head is mounted at the front end of the shell, an adjusting mechanism is mounted at the front end of the laser head, a zooming mechanism is arranged at the front end of the adjusting mechanism, and a lens mounting seat is mounted at the front end of the zooming mechanism. A mounting groove is formed in the front end of the lens mounting seat, an unthreaded hole is formed in the mounting groove, the diffractive optical lens is mounted on the lens mounting seat through the mounting groove, fixing grooves are formed in the two sides of the mounting groove, and fixing screws are mounted in the fixing grooves. According to the invention, the lens setting seat is provided with a plurality of groups of mounting pieces, the lens is fixed through the groove for fixing and matching the lens, and then the lens is fixed through the cover plate, the fixing screws and the like, so that the whole lens is more stable to mount and convenient to replace, the lens can be detachably mounted on the whole, and the whole laser graduated scale can be widely used.

Description

Technical Field

[0001] The invention relates to the technical field of laser measuring equipment, in particular to a laser scale. Background Art

[0002] Laser is a new technology developed in the 1960s. It has the advantages of high intensity, high directionality, spatial coherence, narrow bandwidth and high monochromaticity. The world's first laser was successfully developed by Maiman, a scientist at Hughes Aircraft Company in the United States in 1960. This achievement laid the foundation for the application of laser technology in various fields. With the continuous development of lasers, its application scope is becoming increasingly wide. In the field of measurement, laser technology is used to manufacture high-precision measuring instruments, such as laser rulers, laser interferometers, etc.

[0003] The prior art also has the following defects during use: The overall lens installation of the laser scale in the prior art is relatively inconvenient, and the overall installation is relatively rough. It is not possible to increase the precision design well, and it is not possible to reduce the impact of design errors on measurement accuracy. The replacement of the lens is also relatively inconvenient. As a whole, the lens of the laser scale may undergo slight displacement during operation, thereby changing the optical path of the laser beam. The optical path deviation will directly affect the focal point and measurement distance of the laser beam, thereby increasing the error.

[0004] In view of this, we propose a laser ruler to solve the existing problems. Summary of the invention

[0005] The object of the present invention is to provide a laser scale to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser scale, comprising a shell, a laser head is installed at the front end of the shell, an adjustment mechanism is installed at the front end of the laser head, a zoom mechanism is arranged at the front end of the adjustment mechanism, a lens mounting seat is installed at the front end of the zoom mechanism, a mounting groove is arranged at the front end of the lens mounting seat, a light hole is arranged in the mounting groove, the diffraction optical lens is installed on the lens mounting seat through the mounting groove, fixing grooves are arranged on both sides of the mounting groove, fixing screws are installed in the fixing grooves, a diffraction optical lens protection cover is installed at the front end of the diffraction optical lens, the diffraction optical lens protection cover is fixedly connected to the fixing groove by fixing screws, and a light shielding front cover is installed at the front end of the diffraction optical lens protection cover.

[0007] Preferably, the adjustment mechanism comprises a mounting component and a lens adjusting assembly, the mounting component is provided with an open slot at the front end, the lens adjusting assembly is provided with a pin at the front end, and the mounting component and the lens adjusting assembly are snap-connected via the open slot and the pin.

[0008] Preferably, a focus wheel is provided outside the zoom mechanism, and the mounting component is engaged and fixed with the inner surface of the zoom mechanism.

[0009] Preferably, the laser head is mounted at the front end of the housing, and the housing and the adjustment mechanism are connected and fixed by matching threads.

[0010] Preferably, the sunshade front cover is in the shape of a half-section cylinder.

[0011] Preferably, the laser head passes through the housing and is connected to a cable at the rear end.

[0012] Preferably, the surface of the diffractive optical lens is provided with standard scales at equal intervals.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges multiple groups of mounting parts on the lens setting seat, fixes the grooves of the lenses by fixing them, and then fixes them by cover plates and fixing screws, etc., so that the overall lens installation is more stable and convenient to replace. The overall lens can be detachably installed, and the overall laser scale can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the lens mounting part of the present invention; Figure 3 It is a structural schematic diagram of the lens adjustment part of the present invention.

[0015] In the figure: 1. Diffractive optical lens protection cover; 2. Diffractive optical lens; 3. Lens mounting seat; 4. Zoom mechanism; 5. Adjustment mechanism; 6. Laser head; 7. Housing; 8. Cable; 9. Front cover of light shield; 10. Mounting slot; 11. Fixing slot; 12. Fixing screw; 13. Mounting part; 14. Opening slot; 15. Mirror adjustment assembly; 16. Pin; 17. Focusing wheel; 18. Light hole. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Embodiment 1 like Figure 1 , Figure 2 and Figure 3As shown, a laser ruler proposed by the present invention comprises a housing 7, a laser head 6 is installed at the front end of the housing 7, an adjustment mechanism 5 is installed at the front end of the laser head 6, a zoom mechanism 4 is arranged at the front end of the adjustment mechanism 5, a lens mounting seat 3 is installed at the front end of the zoom mechanism 4, a mounting groove 10 is arranged at the front end of the lens mounting seat 3, a light hole 18 is arranged in the mounting groove 10, a diffractive optical lens 2 is installed on the lens mounting seat 3 through the mounting groove 10, fixing grooves 11 are arranged on both sides of the mounting groove 10, fixing screws 12 are installed in the fixing groove 11, a diffractive optical lens protection cover 1 is installed at the front end of the diffractive optical lens 2, the diffractive optical lens protection cover 1 is fixedly connected to the fixing groove 11 through the fixing screws 12, and a light shielding front cover 9 is installed at the front end of the diffractive optical lens protection cover 1.

[0018] The diffraction optical lens 2 is placed on the groove of the lens mounting seat 3, protected by the diffraction optical lens protection cover 1, and fixed to the surface of the lens by screwing the fixing screws 12, so as to stabilize and protect the diffraction optical lens 2. The front cover 9 of the hood is used to control the angle of the laser, thereby controlling the emission angle of the laser. The focus of the light beam can be changed by adjusting the mechanism 5 and the zoom mechanism 4, so that the scale spot can be presented at a required angle. The detachable diffraction optical lens protection cover 1 can facilitate the disassembly and replacement of the diffraction optical lens 2 when there is a problem with the diffraction optical lens 2, thereby ensuring the long-term use of the laser scale.

[0019] Furthermore, the adjustment mechanism 5 includes a mounting component 13 and a lens adjustment assembly 15 . An opening groove 14 is provided at the front end of the mounting component 13 , and a pin 16 is provided at the front end of the lens adjustment assembly 15 . The mounting component 13 and the lens adjustment assembly 15 are snap-connected via the opening groove 14 and the pin 16 .

[0020] By connecting and installing the pin 16 and the open groove 14 , the lens adjustment assembly 15 can slide on the mounting component 13 to a certain extent, thereby achieving the purpose of zooming.

[0021] Furthermore, a focus wheel 17 is disposed outside the zoom mechanism 4 , and the mounting component 13 is engaged and fixed to the inner surface of the zoom mechanism 4 .

[0022] The focusing wheel 4 can be adjusted to rotate the mounting component 13 , and the internal tooth sleeve can be moved by the focusing wheel 4 , thereby driving the rear end lens adjustment assembly 15 to move.

[0023] Furthermore, the laser head 6 is mounted at the front end of the housing 7, and the housing 7 and the adjustment mechanism 5 are connected and fixed by matching threads.

[0024] The housing 7 is used to install the entire laser scale and can protect the laser head 6 and the cable 8 extending backward from the laser head 6 .

[0025] Furthermore, the visor front cover 9 is in the shape of a half-section cylinder.

[0026] The cylindrical half-section can control the angle of laser emission and can determine the laser emission angle in advance.

[0027] Furthermore, the laser head 6 passes through the housing 7 and is connected to a cable 8 at the rear end.

[0028] It is connected to the laser head 6 via a cable 8 and then electrically connected to the laser head 6 to generate and emit laser light.

[0029] Furthermore, the surface of the diffractive optical lens 2 is provided with standard scales at equal intervals.

[0030] The scale can be projected to the outside through a laser ruler, so that a 1:1 scale is displayed on the outside, which is convenient for measurement and other operations.

[0031] The working principle of the laser scale based on the first embodiment is: the laser head is lit and the laser passes through the scale diffraction optical lens to project a 1:1 scale length spot on the focal length of the laser lens. The laser divergence angle needs to be designed and determined in advance.

[0032] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A laser scale, comprising a housing (7), characterized in that: A laser head (6) is mounted on the front end of the housing (7); an adjustment mechanism (5) is mounted on the front end of the laser head (6); a zoom mechanism (4) is arranged on the front end of the adjustment mechanism (5); a lens mounting seat (3) is mounted on the front end of the zoom mechanism (4); a mounting groove (10) is arranged on the front end of the lens mounting seat (3); a light hole (18) is arranged in the mounting groove (10); the diffractive optical lens (2) is mounted on the lens mounting seat (3) through the mounting groove (10); fixing grooves (11) are arranged on both sides of the mounting groove (10); fixing screws (12) are installed in the fixing groove (11); a diffractive optical lens protection cover (1) is mounted on the front end of the diffractive optical lens (2); the diffractive optical lens protection cover (1) is fixedly connected to the fixing screw (12) and the fixing groove (11); and a light shielding front cover (9) is mounted on the front end of the diffractive optical lens protection cover (1).

2. A laser scale according to claim 1, characterized in that: The adjustment mechanism (5) comprises a mounting component (13) and a lens adjustment assembly (15); an opening slot (14) is provided at the front end of the mounting component (13); a pin (16) is provided at the front end of the lens adjustment assembly (15); the mounting component (13) and the lens adjustment assembly (15) are snap-fitted and connected via the opening slot (14) and the pin (16).

3. A laser scale according to claim 2, characterized in that: A focus wheel (17) is provided outside the zoom mechanism (4), and the mounting component (13) and the inner surface of the zoom mechanism (4) are engaged and fixed.

4. A laser scale according to claim 1, characterized in that: The laser head (6) is mounted at the front end of the housing (7), and the housing (7) and the adjustment mechanism (5) are connected and fixed via matching threads.

5. A laser scale according to claim 1, characterized in that: The light shield front cover (9) is in the shape of a half-section cylinder.

6. A laser scale according to claim 1, characterized in that: The laser head (6) passes through the housing (7) and is connected to a cable (8) at the rear end.

7. A laser scale according to claim 1, characterized in that: The surface of the diffractive optical lens (2) is provided with standard scales at equal intervals.

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