Energy type laser emission lens structure device

Abstract

The invention discloses an energy type laser emission lens structure device which comprises a wave lens assembly, an emission lens assembly and a laser assembly. On the premise that optical performance and use requirements are met, factors such as cost, weight and size are fully considered, a single-layer lens cone design mode is adopted, and layout, debugging and assembly of the emission lens in a very small space are achieved; according to the structure device, factors such as easy assembly and easy batch production are fully considered, each component of the lens adopts a modular design, and glue joint and installation are independent from each other. According to the laser emission lens structure device, a layer-by-layer inlaying design method is adopted in an extremely small space, focusing and wave lens broadening adjustment can be achieved, the focusing process and the broadening adjustment process do not affect each other, the optical performance of an emission lens can be optimal, the lens is made to be smaller and lighter, meanwhile, the optical precision is guaranteed, and the service life of the laser emission lens is prolonged. And reference can be provided for engineers to design and optimize optical lenses of the same type.

Description

Technical Field

[0001] The invention belongs to the field of energy-type laser optical lens optical machine design and relates to an energy-type laser emission lens structure device. Background Art

[0002] Energy-type laser emitting devices have the characteristics of high positioning accuracy, high resolution and strong anti-electromagnetic interference ability, and can still show good performance in complex environments, such as cloudy and foggy conditions. As a key component of laser emission, the design of optical lens directly affects the performance indicators of energy-type laser emitting devices. With the trend of increasingly miniaturized energy-type laser emitting devices, optical lenses are increasingly required to be small in size, light in weight, low in cost and high in precision. Most energy-type laser emitting devices integrate wave mirrors and lasers on the emitting optical lens. Therefore, it is particularly important to design an energy-type laser emitting lens structure device with superior performance, economical cost, convenient installation and adjustment, and suitable for mass production. Summary of the invention

[0003] (I) Purpose of the invention

[0004] The purpose of the present invention is to provide an energy-type laser emitting lens structural device, which, while meeting the optical performance and usage requirements, fully considers factors such as cost, weight, ease of assembly and convenience for mass production, and realizes the layout, debugging and assembly of the emitting lens in a very small space.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the present invention provides an energy-type laser emitting lens structure device, which includes: a wave mirror assembly 1, an emitting lens assembly 2 and a laser assembly 3, the laser assembly 3 includes a laser frame 11 and a laser 13 mounted thereon, the emitting lens assembly 2 is installed in the laser frame 11 through the emitting lens frame 9, the wave mirror assembly 1 is installed in the emitting lens frame 9, and the wave mirror assembly 1 and the emitting lens assembly 2 shape the laser emitted by the laser 13 into the required emitting field of view.

[0007] Among them, in the laser assembly 3, the laser frame 11 includes a connected front cavity and a rear cavity, the laser 13 is installed in the rear cavity, the emission lens assembly 2 is installed in the front cavity, and the laser frame 11 is designed with a matching interface according to the model of the laser 13.

[0008] The optical axes of the wave mirror assembly 1, the emitting lens assembly 2 and the laser assembly 3 are aligned on one axis.

[0009] Wherein, an insulating sleeve 12 is arranged between the laser 13 and the inner wall of the rear cavity of the laser frame 11 .

[0010] The emission lens assembly 2 includes an emission lens 8, an emission frame 9 and an emission pressing ring 10. The emission lens 8 is installed in the emission frame 9 and is pressed and positioned by the emission pressing ring 10.

[0011] The emitting lens 8 is composed of one or more lenses.

[0012] The wave mirror assembly 1 includes a flat glass 4, a wave mirror 5, a wave mirror frame 6 and a wave mirror pressing ring 7. The wave mirror 5 is installed at the rear of the inner cavity of the wave mirror frame 6 through the wave mirror pressing ring 7, and the flat glass 4 is installed at the front of the inner cavity of the wave mirror frame 6.

[0013] The material of the wave mirror 5 is plastic, and the wave mirror 5 and the wave mirror frame 6 are bonded with micro-elastic adhesive and auxiliaryly fixed with a wave mirror pressing ring 7.

[0014] Among them, the outer contour of the wave mirror 5 is non-circular, and the wave mirror pressing ring 7 is connected to the inner wall of the wave mirror frame 6 by threads. An annular retaining ring is arranged on the inner wall of the wave mirror pressing ring 7. The wave mirror pressing ring 7 presses the wave mirror 5 and acts as a system aperture at the same time, reducing the influence of stray light on image quality.

[0015] The debugging process of the energy-type laser emission lens structure device is as follows:

[0016] A) Install the laser 13 on the laser frame 11, insert the insulating sleeve 12 between the two, tighten them with screws, and then perform an insulation impedance test on the laser assembly 3 to ensure that the insulation index requirements are met;

[0017] b) In an optical assembly room with darkroom function, first connect the laser assembly 3 to a DC regulated power supply and a laser power supply, then screw the emitting lens assembly 2 into the laser assembly 3, rotate the emitting lens assembly 2 to perform optical stepless focusing, and use a night vision device to observe the changes in the laser emission spot. When the laser emission spot is adjusted to be clear and sharp, the focusing is completed, the position of the emitting lens assembly 2 is fixed, and micro elastic glue is filled;

[0018] c) Install the wave mirror assembly 1 into the emitting lens assembly 2, and observe the laser emission spot with a night vision device while rotating it to make its width and direction meet the requirements. Finally, fill the gaps around it with micro-elastic glue and bond it.

[0019] (III) Beneficial effects

[0020] The energy-type laser emitting lens structure device provided by the above technical solution realizes the layout, debugging and assembly of the emitting lens in a very small space. The lens can realize focusing and widening adjustment. The lens can be infinitely focused by rotating the emitting lens assembly, and the lens can be widened by rotating the wave mirror assembly. The focusing and widening processes do not affect each other. The optical performance of the emitting lens can be optimized by focusing and widening adjustment. The parts in the lens adopt the surface treatment method of matte thread, blackening or spraying matte paint, and an aperture is set to intercept abnormal transmission light, which effectively reduces the influence of stray light on image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of the structure of the energy-type laser emission lens.

[0022] Figure 2 This is a schematic diagram of the assembly of the components of the transmitting lens structure device.

[0023] Figure 3 This is a three-dimensional digital model diagram of the transmitting lens structure device. DETAILED DESCRIPTION

[0024] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0025] Reference Figures 1 to 3 As shown, the energy-type laser emitting lens structure device of this embodiment includes a wave mirror assembly 1, an emitting lens assembly 2 and a laser assembly 3. The laser assembly 3 includes a laser frame 11 and a laser 13 mounted thereon. The emitting lens assembly 2 is mounted in the laser frame 11 through the emitting lens frame 9. The wave mirror assembly 1 is mounted in the emitting lens frame 9. The wave mirror assembly 1 and the emitting lens assembly 2 shape the laser emitted by the laser 13 into the required emitting field of view. The lens structure device meets the optical performance requirements and the use environment requirements.

[0026] Among them, in the laser assembly 3, the laser frame 11 includes a connected front cavity and a rear cavity, a laser 13 is installed in the rear cavity, and an emitting lens assembly 2 is installed in the front cavity. The laser frame 11 can be designed with matching interfaces according to different laser models. The laser frame 11 integrates the wave mirror assembly 1, the emitting lens assembly 2 and the laser 13 in a very small space, and through the conversion and transmission of the reference, the optical axes of the wave mirror assembly 1, the emitting lens assembly 2 and the laser assembly 3 are calibrated on an axis to meet the requirements of the optical system for eccentricity, tilt tolerance and air spacing error.

[0027] An insulating sleeve 12 is arranged between the laser 13 and the inner wall of the rear cavity of the laser frame 11 .

[0028] The emission lens assembly 2 includes an emission lens 8, an emission lens frame 9 and an emission pressure ring 10. The emission lens 8 is installed in the emission lens frame 9 and is pressed and positioned by the emission pressure ring 10. The emission lens 8 can be composed of one or more lenses. The assembly adopts a common optical assembly and calibration process mode, that is, a single-layer lens barrel design method. The optical lens does not need to be trimmed twice in the form of an assembly, which can effectively improve the assembly and calibration efficiency and reduce costs. The design of the emission lens assembly 2 fully considers the thermal expansion effect between different materials under high and low temperature conditions to ensure that each objective lens does not lock or loosen within the temperature bandwidth.

[0029] The wave mirror assembly 1 includes a flat glass 4, a wave mirror 5, a wave mirror frame 6 and a wave mirror pressing ring 7. The wave mirror 5 is installed at the rear of the inner cavity of the wave mirror frame 6 through the wave mirror pressing ring 7, and the flat glass 4 is installed at the front of the inner cavity of the wave mirror frame 6.

[0030] The core of the design of the wave mirror assembly 1 lies in the fixed installation of the wave mirror 5 and the heat insulation application of the flat glass 4. Since the wave mirror 5 is made of plastic, and the adhesiveness of plastic is not very good and it is not resistant to high temperature, it is necessary to design a flat glass 4 at the front end of the wave mirror 5 for heat insulation, and the wave mirror 5 and the wave mirror frame 6 are connected by micro-elastic adhesive bonding with a wave mirror pressing ring 7 for auxiliary fixing.

[0031] The wave mirror 5 does not adopt a circular contour as much as possible. At the same time, the wave mirror pressure ring 7 is cleverly designed. While the thread is tightened, it also acts as a system aperture, which can effectively reduce the influence of stray light on image quality. The above design can meet the environmental adaptability requirements of the wave mirror assembly 1 under various working conditions such as high and low temperatures and vibration shock.

[0032] To meet the requirements of environmental adaptability, the lens design fully considers the thermal expansion effect between different materials under high and low temperature conditions to ensure that each optical lens does not lock or loosen within the temperature bandwidth; to adapt to the mechanical environment, the optical lens and the structural parts are connected in a form of auxiliary fixation using silicone rubber bonding and a pressure ring, which has good vibration and impact resistance. This energy-type laser emission lens structure device has been applied to many lenses and has been fully tested and verified.

[0033] To meet the requirements of optical performance, the lens design can adjust the focus and width. The structural space size of most laser lenses is relatively demanding. This device adopts a three-layer mosaic design method in a very small space (maximum φ15mm outline boundary), such as Figure 2 As shown in the figure, the optical performance of the transmitting lens can be optimized by adjusting the focus and width. The debugging steps are as follows:

[0034] a) Install the laser 13 on the laser frame 11. Before installation, be sure to insert the insulating sleeve 12 between the two parts. After tightening with screws, perform an insulation impedance test on the laser component 3 to ensure that it meets the insulation index requirements.

[0035] b) In an optical assembly room with darkroom function, first connect the laser assembly 3 to the DC regulated power supply and the laser power supply, then screw the emitting lens assembly 2 into the laser assembly 3, rotate the emitting lens assembly 2 to perform optical stepless focusing, and use a night vision device to observe the changes in the laser emission spot. When the laser emission spot is adjusted to be clear and sharp, the focusing is completed. Figure 3 The top screw hole shown in the figure is used to fix the position of the transmitting lens assembly 2, and Figure 3 The glue injection holes shown are filled with micro-elastic glue.

[0036] c) Install the wave mirror assembly 1 into the emitting lens assembly 2, and observe the laser emission spot with a night vision device while rotating it to make its width and direction meet the requirements. Finally, fill the gaps around it with micro-elastic glue and bond it.

[0037] It can be seen from the above technical scheme that the present invention adopts common optical assembly and calibration technology, each component adopts modular design, and the gluing and installation are independent of each other. The lens can achieve focusing and width adjustment, and the focusing and width adjustment processes do not affect each other, which can optimize the optical performance of the transmitting lens. This structural device has been applied to many lenses and has been fully tested and verified, which can provide a reference for engineers to design and optimize the same type of optical lenses.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An energy-type laser emitting lens structure device, characterized in that: include: A wave mirror assembly (1), a transmitting lens assembly (2) and a laser assembly (3), wherein the laser assembly (3) comprises a laser frame (11) and a laser (13) mounted thereon, the transmitting lens assembly (2) is mounted in the laser frame (11) via a transmitting lens frame (9), the wave mirror assembly (1) is mounted in the transmitting lens frame (9), and the wave mirror assembly (1) and the transmitting lens assembly (2) shape the laser light emitted by the laser (13) into a required transmitting field of view.

2. The energy-type laser emitting lens structure device as claimed in claim 1, characterized in that: In the laser assembly (3), the laser frame (11) comprises a front cavity and a rear cavity which are connected, the laser (13) is installed in the rear cavity, the emission lens assembly (2) is installed in the front cavity, and the laser frame (11) is designed with a matching interface according to the model of the laser (13).

3. The energy-type laser emitting lens structure device as described in claim 2, characterized in that: The optical axes of the wave mirror assembly (1), the emitting lens assembly (2) and the laser assembly (3) are aligned on an axis.

4. The energy-type laser emitting lens structure device as claimed in claim 3, characterized in that: An insulating sleeve (12) is arranged between the laser (13) and the inner wall of the rear cavity of the laser frame (11).

5. The energy-type laser emitting lens structure device as claimed in claim 4, characterized in that: The emission lens assembly (2) comprises an emission lens (8), an emission lens frame (9) and an emission pressing ring (10); the emission lens (8) is installed in the emission lens frame (9) and is pressed and positioned by the emission pressing ring (10).

6. The energy-type laser emitting lens structure device as claimed in claim 5, characterized in that: The emission lens (8) is composed of one or more lenses.

7. The energy-type laser emitting lens structure device as claimed in claim 6, characterized in that: The wave mirror assembly (1) comprises a flat glass (4), a wave mirror (5), a wave mirror frame (6) and a wave mirror pressing ring (7); the wave mirror (5) is mounted on the rear part of the inner cavity of the wave mirror frame (6) via the wave mirror pressing ring (7); and the flat glass (4) is mounted on the front part of the inner cavity of the wave mirror frame (6).

8. The energy-type laser emitting lens structure device as claimed in claim 7, characterized in that: The wave mirror (5) is made of plastic, and the wave mirror (5) and the wave mirror frame (6) are bonded with micro-elastic adhesive and are supplemented with a wave mirror pressing ring (7) for fixation.

9. The energy-type laser emitting lens structure device as claimed in claim 8, characterized in that: The wave mirror (5) has a non-circular outer contour, and the wave mirror pressing ring (7) is connected to the inner wall of the wave mirror frame (6) by means of threads. An annular retaining ring is arranged on the inner wall of the wave mirror pressing ring (7). The wave mirror pressing ring (7) presses the wave mirror (5) and acts as a system aperture at the same time, thereby reducing the influence of stray light on image quality.

10. The energy-type laser emitting lens structure device as claimed in claim 9, characterized in that: The device debugging process is: a) Install the laser (13) on the laser frame (11), insert an insulating sleeve (12) between the two, tighten them with screws, and then perform an insulation impedance test on the laser assembly (3) to ensure that the insulation index requirements are met; b) In an optical assembly room with darkroom function, first connect the laser assembly (3) to a DC regulated power supply and a laser power supply, then screw the emitting lens assembly (2) into the laser assembly (3), rotate the emitting lens assembly (2) to perform optical stepless focusing, and simultaneously observe the changes in the laser emission spot with a night vision device. When the laser emission spot is adjusted to be clear and sharp, the focusing is completed, and the position of the emitting lens assembly (2) is fixed and filled with micro-elastic glue; c) Install the wave mirror assembly (1) into the emitting lens assembly (2), and use a night vision device to observe the laser emission spot while rotating it, so that its width and direction meet the requirements, and finally fill the gaps around it with micro elastic glue to bond it.

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