Optical beam expander
Through the lens barrel structure of the sliding socket and the design of the micro-head adjustment disc, the problem of insufficient adjustment accuracy of the optical beam expanding lens is solved, and high-precision adjustment of lens alignment is achieved.
Patent Information
- Application Number
- CN202422575854.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing optical beam expanders cannot guarantee adjustment accuracy during the assembly process.
Using the first and second lens barrel structures with sliding sockets, the relative positions of the first adjustment disc and the second adjustment disc are adjusted by the differential head to accurately align the first lens and the second lens, and improve the adjustment accuracy.
The adjustment accuracy of the optical beam expander is achieved to reach 0.01mm, ensuring the fine-tuning effect of lens alignment.
Smart Images
Figure CN223155293U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of optical technologies, and more particularly, to an optical beam expander. Background Art
[0002] An optical beam expander, also known as a beam expander, is an optical element mainly used to expand the diameter of a laser beam while keeping the beam quality as unchanged as possible. It usually consists of a pair or more lenses designed to reduce the divergence angle of the laser beam, so that the beam remains focused at a farther distance and the spot size increases. The applications of beam expanders are very extensive, including laser marking, cutting, welding, medical equipment, scientific research instruments, and laser display systems, etc. In the design of optical beam expanders, usually, simulations are used to determine the technical parameters and placement positions of the optical elements in the system, so as to obtain parameters such as the desired spot size and energy density, and then parts are processed according to the simulation results.
[0003] In the existing optical beam expander, during the process of assembling parts, only the position of the lens can be adjusted by threads to correct the parameters, and this adjustment method cannot guarantee the adjustment accuracy of the optical beam expander. Summary of the Utility Model
[0004] The purpose of the present application is to provide an optical beam expander, which can improve the adjustment accuracy of the optical beam expander.
[0005] The embodiments of the present application are implemented as follows:
[0006] The embodiments of the present application provide an optical beam expander, including a first lens barrel and a second lens barrel that are slidably sleeved. A first lens is arranged inside the first lens barrel, and a second lens is arranged inside the second lens barrel. A first adjustment disc is arranged on the outer wall of the first lens barrel, and a second adjustment disc is arranged on the outer wall of the second lens barrel. A differential head is arranged on the first adjustment disc, and the operating end of the differential head abuts against the second adjustment disc.
[0007] Optionally, as an implementable manner, a guide rod is further arranged on the first adjustment disc, and a guide hole corresponding to the guide rod is arranged on the second adjustment disc. The guide rod is slidably connected to the second adjustment disc through the guide hole.
[0008] Optionally, as an implementable manner, a locking nut is threadedly connected to the end of the guide rod extending out of the guide hole.
[0009] Optionally, as an implementable manner, an elastic resetting member is connected between the first adjustment disc and the second adjustment disc.
[0010] Optionally, as an implementable manner, a plurality of first connection portions are provided on the first adjustment disk, a plurality of second connection portions corresponding to the first connection portions one by one are provided on the second adjustment disk, a plurality of elastic reset members are included, and the elastic reset members connect the first connection portions and the second connection portions.
[0011] Optionally, as an implementable manner, an installation groove is provided at one end of the first lens barrel away from the first lens, and the second lens barrel is installed in the installation groove.
[0012] Optionally, as an implementable manner, the second lens barrel includes a connection section and an installation section, the outer diameter of the connection section is smaller than the outer diameter of the installation section, the connection section is arranged in the installation groove, and the second adjustment disk is arranged on one side of the connection section close to the installation section.
[0013] Optionally, as an implementable manner, a clamping groove is provided on the inner wall of the first lens barrel, and the first lens is fixed through the clamping groove.
[0014] Optionally, as an implementable manner, a pressing ring is threadedly connected to the first lens barrel, and the first lens is pressed through the pressing ring.
[0015] Optionally, as an implementable manner, a connecting sleeve is threadedly connected in the second lens barrel, and the second lens is arranged on the connecting sleeve.
[0016] The beneficial effects of the embodiments of the present application include:
[0017] The optical beam expander provided by the present application includes a first lens barrel and a second lens barrel that are slidably sleeved. A first lens is arranged in the first lens barrel, a second lens is arranged in the second lens barrel. A first adjustment disk is arranged on the outer wall of the first lens barrel, a second adjustment disk is arranged on the outer wall of the second lens barrel. A differential head is arranged on the first adjustment disk, and the moving end of the differential head abuts against the second adjustment disk. The relative positions of the first adjustment disk and the second adjustment disk are adjusted through the differential head to realize the adjustment of the relative positions of the first lens and the second lens, thereby improving the adjustment accuracy of the optical beam expander. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1 It is one of the structural schematic diagrams of the optical beam expander provided by the embodiments of the present application;
[0020] Figure 2 This is the second structural schematic diagram of the optical beam expander provided by the embodiment of the present application.
[0021] Icon: 100 - optical beam expander; 110 - first lens barrel; 111 - mounting groove; 112 - first lens; 113 - retaining ring; 120 - second lens barrel; 121 - connecting section; 122 - mounting section; 123 - connecting sleeve; 124 - second lens; 125 - mounting tube; 130 - first adjusting disc; 131 - guide rod; 132 - locking nut; 133 - first connecting portion; 140 - second adjusting disc; 141 - second connecting portion; 150 - micrometer head; 160 - elastic reset member. Specific embodiments
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.
[0024] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present application, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0026] Please refer to Figure 1 and Figure 2, this embodiment provides an optical beam expander 100, which includes a first lens barrel 110 and a second lens barrel 120 sleeved slidably. A first lens 112 is disposed inside the first lens barrel 110, and a second lens 124 is disposed inside the second lens barrel 120. A first adjusting disc 130 is disposed on the outer wall of the first lens barrel 110, and a second adjusting disc 140 is disposed on the outer wall of the second lens barrel 120. A differential head 150 is disposed on the first adjusting disc 130, and the operating end of the differential head 150 abuts against the second adjusting disc 140.
[0027] Specifically, when assembling the optical beam expander 100 of the present application, the first lens 112 is installed inside the first lens barrel 110, the second lens 124 is installed inside the second lens barrel 120, the first adjusting disc 130 is disposed on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is disposed on the outer wall of the second lens barrel 120. Subsequently, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. By rotating the differential head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so as to adjust the relative position of the second lens barrel 120 and the first lens barrel 110, and thus the relative positions of the first lens 112 and the second lens 124 are adjusted. The precision of the differential head 150 can reach 0.01 mm, which can ensure fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0028] The optical beam expander 100 provided by the present application includes a first lens barrel 110 and a second lens barrel 120 sleeved slidably. A first lens 112 is disposed inside the first lens barrel 110, and a second lens 124 is disposed inside the second lens barrel 120. A first adjusting disc 130 is disposed on the outer wall of the first lens barrel 110, and a second adjusting disc 140 is disposed on the outer wall of the second lens barrel 120. A differential head 150 is disposed on the first adjusting disc 130, and the operating end of the differential head 150 abuts against the second adjusting disc 140. By adjusting the relative positions of the first adjusting disc 130 and the second adjusting disc 140 through the differential head 150, the relative positions of the first lens 112 and the second lens 124 are adjusted, thereby improving the adjustment precision of the optical beam expander 100.
[0029] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, a guide rod 131 is further disposed on the first adjusting disc 130, and a guide hole corresponding to the guide rod 131 is disposed on the second adjusting disc 140. The guide rod 131 is slidably connected to the second adjusting disc 140 through the guide hole.
[0030] Specifically, when assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110, the second lens 124 is installed in the second lens barrel 120, the first adjusting disc 130 is provided on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is provided on the outer wall of the second lens barrel 120. Subsequently, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. By rotating the differential head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so that the second adjusting disc 140 slides along the extension direction of the guide rod 131, and the relative position of the second lens barrel 120 and the first lens barrel 110 is adjusted to realize the adjustment of the relative positions of the first lens 112 and the second lens 124. The accuracy of the differential head 150 can reach 0.01 mm, which can ensure the fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment accuracy of the optical beam expander 100. Among them, the guide rod 131 and the differential head 150 are relatively located on both sides of the first adjusting disc 130.
[0031] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, a locking nut 132 is threadedly connected to the end of the guide rod 131 extending out of the guide hole.
[0032] Specifically, when assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110, the second lens 124 is installed in the second lens barrel 120, the first adjusting disc 130 is provided on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is provided on the outer wall of the second lens barrel 120. Subsequently, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. By rotating the differential head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so that the second adjusting disc 140 slides along the extension direction of the guide rod 131, and the relative position of the second lens barrel 120 and the first lens barrel 110 is adjusted to realize the adjustment of the relative positions of the first lens 112 and the second lens 124. After the adjustment is completed, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are locked by the locking nut 132. The accuracy of the differential head 150 can reach 0.01 mm, which can ensure the fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment accuracy of the optical beam expander 100.
[0033] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, an elastic resetting member 160 is connected between the first adjusting disc 130 and the second adjusting disc 140.
[0034] Specifically, an elastic reset member 160 is connected between the first adjusting disc 130 and the second adjusting disc 140 to ensure that the moving end of the micrometer head 150 always abuts against the second adjusting disc 140. When assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110, the second lens 124 is installed in the second lens barrel 120, the first adjusting disc 130 is arranged on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is arranged on the outer wall of the second lens barrel 120. Then, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other, the first adjusting disc 130 and the second adjusting disc 140 are connected by the elastic reset member 160, and by rotating the micrometer head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so that the second adjusting disc 140 slides along the extension direction of the guide rod 131, the relative position of the second lens barrel 120 and the first lens barrel 110 is adjusted, and the relative positions of the first lens 112 and the second lens 124 are adjusted. The precision of the micrometer head 150 can reach 0.01 mm, which can ensure fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0035] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, a plurality of first connection parts 133 are arranged on the first adjusting disc 130, a plurality of second connection parts 141 corresponding to the first connection parts 133 one by one are arranged on the second adjusting disc 140, and a plurality of elastic reset members 160 are included. The elastic reset members 160 connect the first connection parts 133 and the second connection parts 141.
[0036] Specifically, a plurality of elastic reset members 160 are connected between the first adjusting disc 130 and the second adjusting disc 140 to ensure the reset stability of the first adjusting disc 130 and the second adjusting disc 140. When assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110, the second lens 124 is installed in the second lens barrel 120, the first adjusting disc 130 is arranged on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is arranged on the outer wall of the second lens barrel 120. Then, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other, the first connection parts 133 and the second connection parts 141 are connected by the elastic reset members 160, and by rotating the micrometer head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so that the second adjusting disc 140 slides along the extension direction of the guide rod 131, the relative position of the second lens barrel 120 and the first lens barrel 110 is adjusted, and the relative positions of the first lens 112 and the second lens 124 are adjusted. The precision of the micrometer head 150 can reach 0.01 mm, which can ensure fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0037] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, an installation groove 111 is provided at one end of the first lens barrel 110 away from the first lens 112, and the second lens barrel 120 is installed in the installation groove 111.
[0038] Furthermore, the second lens barrel 120 includes a connection section 121 and an installation section 122. The outer diameter of the connection section 121 is smaller than that of the installation section 122. The connection section 121 is arranged in the installation groove 111, and the second adjustment disc 140 is arranged on the side of the connection section 121 close to the installation section 122.
[0039] Specifically, when assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110, the second lens 124 is installed in the second lens barrel 120, a first adjustment disc 130 is arranged on the outer wall of the first lens barrel 110, and a second adjustment disc 140 is arranged on the outer wall of the second lens barrel 120. Then, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. The connection section 121 of the second lens barrel 120 is installed in the installation groove 111 of the first lens barrel 110. By rotating the differential head 150, the relative positions of the first adjustment disc 130 and the second adjustment disc 140 are adjusted, so that the second adjustment disc 140 slides along the extension direction of the guide rod 131, the relative positions of the second lens barrel 120 and the first lens barrel 110 are adjusted, and the relative positions of the first lens 112 and the second lens 124 are adjusted. The precision of the differential head 150 can reach 0.01 mm, which can ensure fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0040] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, a clamping groove is provided on the inner wall of the first lens barrel 110, and the first lens 112 is fixed through the clamping groove.
[0041] Furthermore, a retaining ring 113 is threadedly connected to the first lens barrel 110, and the first lens 112 is pressed tightly by the retaining ring 113.
[0042] Specifically, when assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110. The first lens 112 is installed in the card slot, and the first lens 112 is pressed tightly by the retaining ring 113. The second lens 124 is installed in the second lens barrel 120. A first adjustment disc 130 is provided on the outer wall of the first lens barrel 110, and a second adjustment disc 140 is provided on the outer wall of the second lens barrel 120. Subsequently, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. The connecting section 121 of the second lens barrel 120 is installed in the installation slot 111 of the first lens barrel 110. By rotating the differential head 150, the relative positions of the first adjustment disc 130 and the second adjustment disc 140 are adjusted, so that the second adjustment disc 140 slides along the extension direction of the guide rod 131, to adjust the relative position of the second lens barrel 120 and the first lens barrel 110, so as to realize the adjustment of the relative positions of the first lens 112 and the second lens 124. The precision of the differential head 150 can reach 0.01 mm, which can ensure the fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0043] In a feasible embodiment of the present application, as Figure 1 and Figure 2 shown, a connecting sleeve 123 is threadedly connected in the second lens barrel 120, and the second lens 124 is arranged on the connecting sleeve 123.
[0044] Wherein, an installation pipe 125 is further arranged in the second lens barrel 120. The connecting sleeve 123 and the installation pipe 125 are threadedly connected. A threaded hole is provided on the side wall of the second lens barrel 120, and a fastener passes through the threaded hole and abuts against the installation pipe 125 sleeved in the second lens barrel 120, so as to facilitate the installation and disassembly of the second lens 124.
[0045] Specifically, by threadedly connecting the second lens barrel 120 and the connecting sleeve 123, the positional relationship between the first lens 112 and the second lens 124 is roughly adjusted by rotating the connecting sleeve 123. By rotating the differential head 150, the relative positions of the first adjustment disc 130 and the second adjustment disc 140 are adjusted, so that the second adjustment disc 140 slides along the extension direction of the guide rod 131, to adjust the relative position of the second lens barrel 120 and the first lens barrel 110, so as to realize the adjustment of the relative positions of the first lens 112 and the second lens 124. The precision of the differential head 150 can reach 0.01 mm, which can ensure the fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0046] When assembling the optical beam expander 100 of the present application, the first lens 112 is installed in the first lens barrel 110. The first lens 112 is installed in the card slot, and the first lens 112 is pressed tightly by the retaining ring 113. The connecting sleeve 123 is installed on the second lens barrel 120 by threading. The second lens 124 is installed on the connecting sleeve 123. The first adjusting disc 130 is arranged on the outer wall of the first lens barrel 110, and the second adjusting disc 140 is arranged on the outer wall of the second lens barrel 120. Subsequently, the first lens barrel 110 and the second lens barrel 120 are sleeved with each other. The connecting section 121 of the second lens barrel 120 is installed in the installation slot 111 of the first lens barrel 110. By rotating the differential head 150, the relative positions of the first adjusting disc 130 and the second adjusting disc 140 are adjusted, so that the second adjusting disc 140 slides along the extension direction of the guide rod 131, and the relative positions of the second lens barrel 120 and the first lens barrel 110 are adjusted, so as to realize the adjustment of the relative positions of the first lens 112 and the second lens 124. The precision of the differential head 150 can reach 0.01 mm, which can ensure the fine adjustment of the relative positions of the first lens 112 and the second lens 124, thereby improving the adjustment precision of the optical beam expander 100.
[0047] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An optical beam expander, characterized in that, It includes a first lens barrel and a second lens barrel that are slidably sleeved. A first lens is arranged inside the first lens barrel, and a second lens is arranged inside the second lens barrel. A first adjusting disc is arranged on the outer wall of the first lens barrel, and a second adjusting disc is arranged on the outer wall of the second lens barrel. A micrometer head is arranged on the first adjusting disc, and the actuating end of the micrometer head abuts against the second adjusting disc.
2. The optical beam expander according to claim 1, characterized in that, A guide rod is further arranged on the first adjusting disc, and a guide hole corresponding to the guide rod is arranged on the second adjusting disc. The guide rod is slidably connected to the second adjusting disc through the guide hole.
3. The optical beam expander according to claim 2, wherein A locking nut is threadedly connected to the end of the guide rod extending out of the guide hole.
4. The optical beam expander according to claim 1, wherein, An elastic resetting member is connected between the first adjusting disc and the second adjusting disc.
5. The optical beam expander according to claim 4, wherein, A plurality of first connecting portions are arranged on the first adjusting disc, and a plurality of second connecting portions corresponding to the first connecting portions one by one are arranged on the second adjusting disc. There are a plurality of elastic resetting members, and the elastic resetting members connect the first connecting portions and the second connecting portions.
6. The optical beam expander according to claim 1, characterized in that, An installation groove is arranged at one end of the first lens barrel away from the first lens, and the second lens barrel is installed in the installation groove.
7. The optical beam expander according to claim 6, wherein, The second lens barrel includes a connecting section and an installation section. The outer diameter of the connecting section is smaller than the outer diameter of the installation section. The connecting section is arranged in the installation groove, and the second adjusting disc is arranged on one side of the connecting section close to the installation section.
8. The optical beam expander according to claim 1, characterized in that, A clamping groove is arranged on the inner wall of the first lens barrel, and the first lens is fixed through the clamping groove.
9. The optical beam expander according to claim 1, characterized in that A pressing ring is threadedly connected to the first lens barrel, and the first lens is pressed tightly through the pressing ring.
10. The optical beam expander according to claim 1, wherein, A connecting sleeve is threadedly connected inside the second lens barrel, and the second lens is arranged on the connecting sleeve.