A compact optical pickup device

Abstract

The utility model relates to a compact optical pickup device, include: light receiving part, between optical equipment fixed as optical pickup quick detachable interface, light beam collector is used for collecting light beam, light beam adapter is connected with light beam collector at one end, adjusting frame is equipped with mirror in it, and mirror is obliquely arranged, connecting piece is for light inlet end, and the light to be collected passes through mirror reflection and is collected to light beam collector in connecting piece place. The compact optical pickup device, the light to be collected enters from the light inlet end of connecting piece, and the angle of mirror is adjusted through the threaded pair on adjusting frame to realize that the light beam comes in is reflected to the center of light beam collector, can reduce the space of optical pickup since the change of the direction of light path propagation, in addition, the mode that top screw and swallow-tailed groove are used between light beam collector, light beam adapter, adjusting frame, mirror and connecting piece, and the dismounting is convenient and fast, can greatly save time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the coherent raman optical equipment technology field using laser as light source especially point to a compact optical pickup device. BACKGROUND

[0002] In the optical equipment using laser as light source, reflection, scattering and other phenomena will occur when encountering certain optical elements (such as light splitting sheet, polarization beam splitting cube, etc.), which will cause laser to appear in the direction that is not needed. Again, due to the high energy of laser itself, if left unchecked, it may cause damage to the optical elements, mechanical structures, electrical equipment and other optical equipment in the optical equipment, and may also affect the normal operation of the optical equipment, so the light beams in these unnecessary directions need to be collected.

[0003] In the prior art, the commonly used light collecting device is usually directly fixed perpendicularly in the opening of the side wall of the optical system by threads. Although this kind of device can reduce light scattering to a certain extent, it has the following problems in actual application:

[0004] 1. Large space occupation - the existing light collecting device occupies a large space due to the perpendicular use, and the installation method depends on the fixed opening of the optical system body. This installation method limits the assembly integration of the optical system and other external devices, especially in complex imaging equipment with high space layout requirements, the fixed light collecting device is difficult to adjust flexibly, which easily causes assembly difficulty or space waste.

[0005] 2. Complex installation - the connection between the traditional light collecting device and the optical system adopts a complex threaded connection, which needs multiple steps of fixing and debugging, and the assembly process is complicated, increasing the time cost of equipment assembly and maintenance.

[0006] 3. Insufficient adjustment capability - most of the existing light collecting devices lack adjustment function, and the fixed design cannot be flexibly adjusted according to the change of the incident light direction. Therefore, when the incident angle or direction of the excess light changes, the traditional light collecting device often cannot effectively collect all the scattered light, resulting in that part of the light cannot be eliminated in time, which affects the overall optical efficiency of the system. INVENTION CONTENTS

[0007] Therefore, the utility model wants to solve the technical problem in the prior art that the light collecting device adopts the threaded perpendicular connection to collect the excess light, which not only occupies a large space vertically, but also needs to spend a lot of time to disassemble and assemble the light collecting device and the optical equipment through threads.

[0008] To solve the above technical problems, the utility model provides a compact optical pickup device, it includes: light beam collector is used to collect light beam, light beam adapter is connected with light beam collector in one end, adjustment frame is connected with light beam adapter, and be equipped with mirror in adjustment frame, mirror is arranged obliquely, connecting piece is installed on adjustment frame, the connecting piece is the light inlet end, the light line of connecting piece incidence is reflected to light beam collector through mirror and is collected, the compact optical pickup device of the utility model, after the light line of waiting to collect enters from the light inlet end of connecting piece, compared with the mode of " direct connection " of original, through 90 degree light path overturn can make laser beam have longer optical path and thus energy density is weak. Further through light beam collector effective collection and still can further reduce the space of optical pickup is occupied, in addition, independent split structure design is adopted between light beam collector, light beam adapter, adjustment frame, mirror and connecting piece, and adopts the mode of screw pair or clamping between parts, convenient and fast dismounting, can greatly save time.

[0009] In an embodiment of the utility model, the center of connecting piece is equipped with through -hole no.

[0010] In an embodiment of the utility model, the one end of connecting piece away from adjustment frame is connected with light receiving piece, the center of light receiving piece is equipped with through -hole no.

[0011] In an embodiment of the utility model, the one end of connecting piece away from adjustment frame is connected with light receiving piece, the center of light receiving piece is equipped with through -hole no.

[0012] In an embodiment of the utility model, adjustment frame includes mirror seat, mirror frame, upper cover, tension spring and screw pair, mirror is installed to mirror frame, mirror frame is installed to mirror seat, the one end of tension spring is connected with mirror frame, and the other end of tension spring is connected with mirror seat, screw pair is connected with mirror frame by screw, and screw pair passes through the end of mirror frame and is opposite with mirror seat, upper cover is covered in mirror seat outside, and mirror frame is located in the scope of covering.

[0013] In an embodiment of the utility model, mirror frame is equipped with lens mounting groove hole, and mirror is arranged in lens mounting groove hole.

[0014] In one embodiment of the utility model, the mirror frame is provided with a light transmission hole, the light transmission hole is arranged obliquely, the mirror frame is provided with a through hole three on the side opposite to the connecting piece, and the mirror seat is provided with a through hole four on the side opposite to the light beam adapter, the light transmission hole is located at the intersection of the through hole three and the through hole four, and the lens mounting groove hole, the through hole two, the through hole one, the through hole three and the through hole four are communicated.

[0015] In one embodiment of the utility model, the mirror frame is provided with a top wire one, and the head of the top wire one is in contact with the side wall of the mirror.

[0016] In one embodiment of the utility model, the center of the light beam adapter is provided with a through hole five, the through hole five and the through hole four are on the same straight line, and the through hole five and the through hole four are communicated.

[0017] In one embodiment of the utility model, the end opposite to the light beam adapter of the light beam collector is provided with an annular convex part, the annular convex part is arranged in the through hole five, and the annular convex part and the light beam adapter are connected through a top wire.

[0018] The above technical scheme of the utility model has the following beneficial effects compared with the prior art:

[0019] 1. Small size, saves space - the light collector is designed compactly, occupies small space, helps the overall layout and assembly flexibility of the optical system, and is suitable for integrated application of various optical equipment.

[0020] 2. Easy to disassemble and assemble - the light collector adopts modularization and quick assembly design, simplifies the connection process with the optical system, significantly shortens the assembly and maintenance time, and improves the use convenience of the equipment.

[0021] 3. With light path adjusting function - unlike traditional devices, the new light collector has multi-directional adjusting capability, can automatically or manually adjust the light collecting direction according to the change of incident light, ensures that the excess light can be efficiently collected under different incident conditions, and improves the overall performance of the optical system.

[0022] The design of the utility model aims to provide a light collecting device with more practicality and flexibility, meet the needs of modern optical systems for high performance, convenient operation and compact structure, and promote the application and development of optical imaging systems in a wider field. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to the specific embodiments of the utility model and combined with the drawings, wherein

[0024] Figure 1Structure diagram of compact optical pickup device in preferred embodiment of the utility model Figure 1 ;

[0025] Figure 2 Exploded view of compact optical pickup device in preferred embodiment of the utility model

[0026] Figure 3 Structure diagram of compact optical pickup device in preferred embodiment of the utility model Figure 2 ;

[0027] Figure 4 Structure diagram of light collecting piece in preferred embodiment of the utility model

[0028] Figure 5 Exploded view of adjusting frame in preferred embodiment of the utility model

[0029] Figure 6 Structure diagram of mirror seat and mirror frame in preferred embodiment of the utility model

[0030] Figure 7 Structure diagram of mirror seat in preferred embodiment of the utility model

[0031] Figure 8 Structure diagram of light beam adapter in preferred embodiment of the utility model

[0032] Figure 9 Structure diagram of light beam collector in preferred embodiment of the utility model

[0033] Description of the drawing mark of the specification: light beam collector 1, annular convex part 11, light beam adapter 2, through hole five 21, adjusting frame 3, mirror seat 31, light transmission hole 311, through hole three 312, through hole four 313, top screw one 314, mirror frame 32, lens mounting slot hole 321, upper cover 33, tension spring 34, threaded pair 35, reflecting mirror 4, connecting piece 5, through hole one 51, tapered part 52, dovetail groove 53, threaded connection part one 54, light collecting piece 6, through hole two 61, circular recess 62, wedge-shaped convex part 621. DETAILED DESCRIPTION

[0034] The utility model will be further explained in combination with the drawing and specific embodiment, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0035] Reference Figures 1-3As shown, the compact optical pickup device comprises a light beam collector 1, a light beam adapter 2, an adjusting frame 3, a reflector 4 and a connecting piece 5; the light beam collector 1 is used for collecting light beams; the light beam adapter 2 is connected with the light beam collector 1 at one end; the adjusting frame 3 is connected with the light beam adapter 2, and the adjusting frame 3 is internally provided with the reflector 4 which is arranged in an inclined manner; the connecting piece 5 is installed on the adjusting frame 3, the connecting piece 5 is a light inlet end, and the light rays incident on the connecting piece 5 are reflected to the light beam collector 1 for collection through the reflector 4. Preferably, the light rays incident on the connecting piece 5 and the light rays collected by the light beam collector 1 are arranged in a perpendicular manner, and therefore the reflector 4 is arranged in an inclined manner by 45° at the intersection position of the incident light rays and the collected light rays. Through the arrangement of the reflector 4, the direction of the straight light path can be changed, the incident light is formed into a right-angle reflection into the light beam collector 1, and is collected through the light beam collector 1. Since the light path is changed, the distance of the straight-line propagation is reduced, and the installation space can be saved.

[0036] The working principle of the light beam collector 1 is as follows: the light beam collector is a standard device for absorbing the energy of the collected light rays in a collected light ray laboratory, and the continuous collected light rays or the pulsed collected light rays can be scattered and absorbed multiple times in a light beam scatterer, and finally converted into heat.

[0037] A conical top surface is arranged inside the light beam collector, and when the collected light rays irradiate on the conical top surface, the collected light rays are scattered and absorbed, and the generated heat is dissipated through the fins at the bottom.

[0038] In the above structure, a through hole one 51 is arranged at the center of the connecting piece 5, and the through hole one 51 is used for passing the incident light rays.

[0039] Referring to Figure 4 As shown, the connecting piece 5 is connected with a light collecting piece 6 at the end away from the adjusting frame 3, a through hole two 61 is arranged at the center of the light collecting piece 6, the through hole two 61 and the through hole one 51 are arranged on the same straight line, and the through hole two 61 and the through hole one 51 are communicated. The light rays incident on the light collecting piece 6 pass through the through hole two 61 and the through hole one 51 to be incident on the reflector 4 arranged in an inclined manner. A circular groove 62 is arranged at the end of the light collecting piece 6 opposite to the connecting piece 5, a plurality of wedge-shaped protrusions 621 are arranged on the inner wall of the circular groove 62, a tapered portion 52 is arranged at the end of the connecting piece 5 opposite to the light collecting piece 6, a dovetail groove 53 is formed between the tapered portion 52 and the end face of the connecting piece 5, and the wedge-shaped protrusions 621 are arranged in the dovetail groove 53 to realize the connection between the light collecting piece 6 and the connecting piece 5. The wedge-shaped protrusions 621 are clamped in the dovetail groove 53 for portable disassembly and assembly.

[0040] Referring to Figure 5 , 6As shown, the adjusting frame 3 comprises a mirror seat 31, a mirror frame 32, an upper cover 33, a tension spring 34 and a threaded pair 35, the mirror 4 is installed on the mirror frame 32, the mirror frame 32 is installed in the mirror seat 31, one end of the tension spring 34 is connected with the mirror frame 32, and the other end of the tension spring 34 is connected with the mirror seat 31, the threaded pair 35 is threadedly connected with the mirror frame 32, and the threaded pair 35 abuts against the mirror seat 31 through the end of the mirror frame 32, the upper cover 33 covers the outside of the mirror seat 31, and the mirror frame 32 is located in the covered range. Preferably, the number of the tension spring 34 is set to 3, the number of the threaded pair 35 is set to 3, and the 3 tension springs 34 and the 3 threaded pairs 35 are correspondingly arranged. The mirror frame 32 is connected with the mirror seat 32 through the tension spring 34, the relative position between the threaded pair 35 and the mirror frame 32 is adjusted by adjusting the rotation of the threaded pair 35 based on the basic principle of “three points determine a plane”, the distance between the end of the threaded pair 35 extending out of the mirror frame 32 and the mirror seat 31 is changed, that is, the distance between the points is changed, the angle of the mirror frame 32 is adjusted, and thus the pitch angle of the mirror 4 installed in the mirror frame 32 is adjusted. The tension spring 34 provides appropriate restoring force to ensure that the adjusted position is stable and unchanged.

[0041] Referring to Figure 7 As shown, the mirror seat 31 is provided with a light transmission hole 311, and the light transmission hole 311 is obliquely arranged. Correspondingly, the mirror frame 32 is provided with a lens mounting groove hole 321, and the lens mounting groove hole 321 is obliquely arranged and opposite to the light transmission hole 311. The side of the mirror seat 31 opposite to the connecting piece 5 is provided with a through hole three 312, and the side of the mirror seat 31 opposite to the light beam adapter 2 is provided with a through hole four 313, the through hole three 312 and the through hole four 313 are vertically arranged, the light transmission hole 311 is located at the intersection of the through hole three 312 and the through hole four 313, and the lens mounting groove hole 321, the through hole two 61, the through hole one 51, the through hole three 312 and the through hole four 313 are communicated. The end of the connecting piece 5 opposite to the mirror seat 31 is provided with a threaded connection part one 54, the inner wall of the through hole three 312 close to one end of the connecting piece 5 is provided with an internal thread one, and the threaded connection part one 54 and the internal thread one are locked by threads. The mirror seat 31 is provided with a jackscrew one 314, and the head of the jackscrew one 314 is in contact with the side wall of the mirror 4.

[0042] Referring to Figure 8 As shown, the center of the light beam adapter 2 is provided with a through hole five 21, and the through hole five 21 and the through hole four 313 are on the same straight line and are communicated. The light rays incident from the light receiving piece 6 pass through the through hole two 61, the through hole one 51 and the through hole three 312 in sequence, are incident on the mirror 4, are reflected into the through hole four 313, and are incident into the light beam collector 1 through the through hole five 21.

[0043] Referring to Figure 9As shown, the end of the light beam collector 1 opposite to the light beam adapter 2 is provided with a ring-shaped protrusion 11, which is arranged in a through hole five 21, and the ring-shaped protrusion 11 and the light beam adapter 2 are connected through a top wire. The cross section of the ring-shaped protrusion 11 is circular, the through hole one 51 is a circular hole, the ring-shaped protrusion 11 is inserted into one end of the through hole one 51, and a clearance fit is formed.

[0044] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

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