Optical-mechanical system suitable for optical centering vehicle

Abstract

The utility model discloses an optical-mechanical system suitable for an optical centering vehicle, which comprises a front lens group, a rear lens group, a processing tool and an assembling tool, the front lens group comprises a front lens sleeve and a plurality of front lenses, the rear lens group comprises a rear lens sleeve and a plurality of rear lenses, the rear lens group is connected with the front lens group, and a gasket is arranged between the rear lens group and the front lens group. The machining tool comprises a centering vehicle base and an adapter, the centering vehicle base is fixedly connected with the centering vehicle spindle, one end of the adapter is in threaded connection with the centering vehicle base, and the other end of the adapter is in threaded connection with the mirror frame. The lens is installed through the centering vehicle base and the adapters of different sizes, and the problems that an existing lens clamp is complex in structure and high in machining cost are solved. The assembling tool comprises a tool front end and a tool rear end, the tool front end and the tool rear end are coaxial, the tool front end is connected with the front lens sleeve and used for assembling the front lens, the tool rear end is connected with the rear lens sleeve and used for assembling the rear lens, the optical axis consistency can be guaranteed, and the assembling precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of optomechanical systems technology, specifically to an optomechanical system suitable for optical centering vehicles. Background Technology

[0002] Optical-mechanical systems are the foundation for achieving stable and clear imaging of target objects. With the development of large-magnification continuous zoom optical systems and high-performance optical systems, the processing and assembly requirements for optical-mechanical systems are becoming increasingly stringent, resulting in difficulties in assembling and adjusting optical-mechanical systems and a long cycle.

[0003] High-precision optical centering lathes, through integrated testing and processing platforms, enable high-precision machining and assembly of optomechanical systems. CN113296213A discloses a miniaturized and lightweight design and manufacturing method for an optical lens, as well as the optical lens itself. The lens and lens frame are mounted on a centering lathe via a flange structure. The outer circle of the lens frame is precision machined, the flange structure of the lens frame is removed, and then each lens assembly is sequentially installed inside the lens barrel. However, due to the limitations of the centering lathe process, a dedicated lens frame flange structure and a corresponding centering lathe base need to be designed for each lens, resulting in high processing costs. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an optomechanical system suitable for optical centering carriages. During lens processing, a centering carriage base is connected to the optical centering carriage spindle, and an adapter is used to fix the lens frame to the carriage base, ensuring the stability of integral processing and the machinability of the pre-processed surface. After processing, the front and rear lens assemblies are assembled with the assembly fixture axis as a reference to ensure optical axis consistency.

[0005] Specifically, this utility model is implemented as follows:

[0006] An optomechanical system for optical centering carriages, comprising:

[0007] The front lens assembly includes a front lens sleeve and several front lenses, wherein the several front lenses are disposed within the front lens sleeve;

[0008] The rear lens group is connected to the front lens group, and a gasket is provided between the two. The rear lens group includes a rear lens sleeve and several rear lenses, and the several rear lenses are disposed in the rear lens sleeve. Both the front lens and the rear lens include a lens body and a lens frame.

[0009] Machining fixture for connecting a front or rear lens to an optical centering carriage; including a centering carriage base and an adapter, wherein the centering carriage base is fixedly connected to the centering carriage spindle, and one end of the adapter is threadedly connected to the centering carriage base and the other end is threadedly connected to the lens frame.

[0010] The assembly fixture includes a front end and a rear end, which are coaxial. The front end is connected to the front lens sleeve for assembling the front lens, and the rear end is connected to the rear lens sleeve for assembling the rear lens.

[0011] Furthermore, the centering car base has an external thread on its top, the mirror frame has an internal thread on its inner side, the lower internal thread of the adapter is connected to the external thread on the top of the centering car base, and the upper external thread of the adapter is connected to the internal thread on the inner side of the mirror frame.

[0012] Furthermore, the assembly fixture includes:

[0013] support;

[0014] An assembly tube is mounted on the bracket, with one end serving as the front end of the tooling and the other end serving as the rear end of the tooling.

[0015] Furthermore, the front lens assembly includes:

[0016] The front mirror assembly pressure ring is threadedly connected to the front mirror sleeve.

[0017] First lens;

[0018] The second lens, the first lens, and the front lens group retaining ring are arranged sequentially from the inside of the front lens sleeve to the outside.

[0019] Furthermore, the rear mirror assembly includes:

[0020] The rear mirror assembly pressure ring is threadedly connected to the rear mirror sleeve.

[0021] Third lens;

[0022] Fourth lens;

[0023] The fifth lens, the third lens, the fourth lens, the fifth lens, and the rear lens group pressure ring are arranged sequentially from the inside of the rear lens sleeve to the outside.

[0024] Furthermore, the end of the front mirror sleeve away from the front mirror assembly retaining ring is the first assembly part, and the end of the rear mirror sleeve away from the rear mirror assembly retaining ring is the second assembly part, and the first assembly part and the second assembly part are nested together.

[0025] Furthermore, the first assembly part is adapted to the front end of the tooling, and the second assembly part is adapted to the rear end of the tooling.

[0026] The working principle of this utility model:

[0027] During lens processing, the appropriate adapter 2 is selected according to the size of lens 3. One end of adapter 2 is connected to the lens frame, and the other end is connected to the centering machine base 1, thereby mounting the lens on the centering machine spindle 8. The lower end of each adapter 2 is adapted to the centering machine base 1, while the upper end needs to be adapted to different lens frames. After the lens 3 is installed, it is machined. After all lenses 3 are machined, the front lens sleeve 51 is inserted into the front end 42 of the fixture, and the rear lens sleeve 61 is inserted into the rear end 43 of the fixture, making the front and rear lens sleeves coaxial. Then, the lenses are assembled into the sleeves in sequence. Finally, the front lens group retaining ring 52 and the rear lens group retaining ring 62 are installed to form the complete lens.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] (1) The optomechanical system for optical centering carriage provided by this utility model realizes the installation of lenses through a centering carriage base and adapters of different sizes, which solves the problems of complex structure and high processing cost of existing lens fixtures, and can ensure the stability of integrated processing and the machinability of pre-processed surfaces.

[0030] (2) Using assembly fixtures to achieve coaxial assembly of the front and rear lens groups can ensure optical axis consistency and improve assembly accuracy. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the centering car base in Example 1;

[0032] Figure 2 This is a cross-sectional view of the machining tooling in Example 1;

[0033] Figure 3 This is a diagram showing the usage status of the machining tooling in Example 1;

[0034] Figure 4 This is a schematic diagram of the lens and corresponding adapter in Example 1;

[0035] Figure 5 This is a schematic diagram of the assembly tooling in Example 1;

[0036] Figure 6 This is an exploded view of the assembly tooling used in Example 1;

[0037] Figure 7 This is a sectional view of the assembly tooling used in Example 1;

[0038] Figure 8 This is the optical path diagram of the front and rear mirror groups in Example 1.

[0039] Figure label:

[0040] 1-Centering base; 11-Threaded post; 2-Adapter; 21-First lens adapter; 22-Second lens adapter; 23-Third lens adapter; 24-Fourth lens adapter; 25-Fifth lens adapter; 3-Lens; 31-First lens; 311-First lens body; 312-First lens frame; 32-Second lens; 321-Second lens body; 322-Second lens frame; 33-Third lens; 331-Third lens body; 332-Third lens Frame; 34-Fourth lens; 341-Fourth lens body; 342-Fourth lens frame; 35-Fifth lens; 351-Fifth lens body; 352-Fifth lens frame; 4-Bracket; 41-Assembly tube; 42-Tooling front end; 43-Tooling rear end; 5-Front lens assembly; 51-Front lens sleeve; 52-Front lens assembly retaining ring; 53-First assembly part; 6-Rear lens assembly; 61-Rear lens sleeve; 62-Rear lens assembly retaining ring; 63-Second assembly part; 7-Gasket; 8-Centering main shaft. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] This embodiment provides an optomechanical system suitable for an optical centering carriage, including: a front lens group 5, a rear lens group 6, a machining fixture, and an assembly fixture. The machining fixture serves as a jig for machining the lens 3, with the lens 3 already mounted on the centering carriage spindle 8 for machining. The assembly fixture is used to assemble the machined lens 3, forming the front lens group 5 and the rear lens group 6, which are then assembled to form a complete optical lens.

[0044] Specifically, such as Figure 1-8 As shown, the front lens assembly 5 includes a front lens sleeve 51, a first lens 31, a second lens 32, and a front lens assembly retaining ring 52. One end of the front lens sleeve 51 is a first mounting part 53, and the other end has several recessed platforms, the size of which is adapted to the lens. The front lens assembly retaining ring 52, the first lens 31, and the second lens 32 are arranged sequentially from the outside in. The front lens assembly retaining ring 52 is threadedly connected to the front lens sleeve 51, and the first lens 31 and the second lens 32 are pressed and fixed by the front lens assembly retaining ring 52. The rear lens assembly 6 includes a rear lens sleeve 61, a third lens 33, a fourth lens 34, a fifth lens 35, and a rear lens assembly retaining ring 62. The rear lens assembly retaining ring 62 is threadedly connected to the rear lens sleeve 61, and the third lens 33, the fourth lens 34, and the fifth lens 35 are pressed and fixed by the rear lens assembly retaining ring 62. The rear mirror sleeve 61 is located at one end near the front mirror sleeve 51 as the second assembly part 63. The second assembly part 63 and the first assembly part 53 are interference-fitted, and a metal gasket 7 is provided between them. The gasket 7 controls the spacing between the front mirror group 5 and the rear mirror group 6.

[0045] In this embodiment, all lenses 3 adopt a similar structure, consisting of a lens body and a frame. The lens body and its frame are fixed by a four-point centering method using soft adhesive. Specifically, the first lens 31 consists of a first lens body 311 and a first frame 312; the second lens 32 consists of a second lens body 321 and a second frame 322; the third lens 33 consists of a third lens body 331 and a third frame 332; the fourth lens 4 consists of a fourth lens body 341 and a fourth frame 442; and the fifth lens 35 consists of a fifth lens body 351 and a fifth frame 352. The first frame 312 is in direct contact with the second frame 322 and is directly pressed and fixed by the front lens group retaining ring 51. The third frame 332, the fourth frame 342, and the fifth frame 352 are sequentially installed and pressed and fixed by the rear lens group retaining ring 62, making the overall lens structure more compact. Each lens frame requires a machining allowance (300-500μm) to ensure concentric installation accuracy with a slight clearance fit with the sleeve. The lens spacing of the front lens group 5 is controlled by machining the first lens frame 312 and the second lens frame 322, while the lens spacing of the rear lens group 6 is controlled by machining the third lens frame 332, the fourth lens frame 342, and the fifth lens frame 352.

[0046] like Figure 1-4 As shown, the machining fixture includes a centering car base 1 and adapter components 2. The bottom of the centering car base 1 is fixedly connected to the centering car spindle 8 by bolts, and its top is a threaded post 11 with external threads. Several adapter components 2 are provided, each corresponding to a lens 3 of different sizes. In this embodiment, five adapter components 2 are provided: a first lens adapter 21, a second lens adapter 22, a third lens adapter 23, a fourth lens adapter 24, and a fifth lens adapter 25, corresponding to the first lens frame 312, the second lens frame 322, the third lens frame 332, the fourth lens frame 342, and the fifth lens frame 352. The adapter components 2 adopt the same structure, with external threads at the top and internal threads at the bottom. The lower part of each adapter component 2 is the same size as the threaded post 11, differing only in the upper diameter to correspond to different lens frames. The lower part of each lens frame has internal threads and is threadedly connected to the adapter components 2. Lenses of different sizes can be installed and processed using a centering lathe base 1 and adapters of different sizes 2. The lens spacing is controlled by turning the upper and lower flange surfaces of the first lens frame 312 and the second lens frame 322 using a high-precision centering lathe, and concentric installation is achieved by turning the outer circular surfaces of the first lens frame 312 and the second lens frame 322 using a high-precision centering lathe. Similarly, the lens spacing is controlled by turning the upper and lower flange surfaces of the third lens frame 332, the fourth lens frame 342 and the fifth lens frame 352 using a high-precision centering lathe, and concentric installation is achieved by turning the outer circular surfaces of the third lens frame 332, the fourth lens frame 342 and the fifth lens frame 352 using a high-precision centering lathe.

[0047] like Figure 5-7As shown, after each lens 3 is processed, the lenses are assembled using an assembly fixture. The assembly fixture includes a bracket 4 and an assembly tube 41. The assembly tube 41 includes a front end 42 and a rear end 43, which are coaxial. The front end 42 is adapted to the first assembly part 53 of the front lens sleeve 51, and the rear end 43 is adapted to the second assembly part 63 of the rear lens sleeve 61. The front end 42 is used to connect to the first assembly part 53, and the rear end 43 is used to connect to the second assembly part 63, thereby placing the front lens sleeve 51 and the rear lens sleeve 61 on the same axis. After the front lens sleeve 51 and the rear lens sleeve 61 are installed on the assembly tube 41, the lenses are sequentially assembled into the sleeves. Finally, the front lens group retaining ring 52 and the rear lens group retaining ring 62 are installed to form the complete lens.

[0048] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. An optical-mechanical system suitable for an optical centering vehicle, characterized in that, include: The front lens assembly (5) includes a front lens sleeve (51) and a plurality of front lenses, wherein the plurality of front lenses are disposed within the front lens sleeve (51); The rear lens group (6) is connected to the front lens group (5), and a gasket (7) is provided between the two. The rear lens group (6) includes a rear lens sleeve (61) and several rear lenses, and the several rear lenses are disposed in the rear lens sleeve (61). Both the front lens and the rear lens include a lens body and a lens frame. The machining fixture is used to connect the front lens or the rear lens to the optical centering carriage; it includes a centering carriage base (1) and an adapter (2). The centering carriage base (1) is fixedly connected to the centering carriage spindle (8). One end of the adapter (2) is threaded to the centering carriage base (1), and the other end is threaded to the lens frame. The assembly fixture includes a front end (42) and a rear end (43), which are coaxial. The front end (42) is connected to the front lens sleeve (51) for assembling the front lens, and the rear end (43) is connected to the rear lens sleeve (61) for assembling the rear lens.

2. The optical engine system suitable for an optically centered vehicle as claimed in claim 1, wherein, The centering car base (1) has an external thread on its top and an internal thread on the inner side of the mirror frame. The internal thread at the lower end of the adapter (2) is connected to the external thread at the top of the centering car base (1), and the external thread at the upper end of the adapter (2) is connected to the internal thread on the inner side of the mirror frame.

3. The optical engine system suitable for an optically centered vehicle as claimed in claim 1, wherein, The assembly fixture includes: Support (4); Assembly tube (41) is provided on the bracket (4), with one end being the tooling front end (42) and the other end being the tooling rear end (43).

4. The optical engine system suitable for an optically centered vehicle as claimed in claim 1, wherein, The anterior mirror assembly (5) includes: The front mirror assembly retaining ring (52) is threadedly connected to the front mirror sleeve (51); First lens (31); The second lens (32), the first lens (31) and the front lens group pressure ring (52) are arranged sequentially from the inside of the front lens sleeve (51) to the outside.

5. The optical engine system suitable for an optically centered vehicle as claimed in claim 1, wherein, The rear end mirror assembly (6) includes: The rear mirror assembly pressure ring (62) is threadedly connected to the rear mirror sleeve (61); Third lens (33); Fourth lens (34); The fifth lens (35), the third lens (33), the fourth lens (34), the fifth lens (35) and the rear lens group pressure ring (62) are arranged sequentially from the inside to the outside of the rear lens sleeve (61).

6. The optical engine system suitable for an optically centered vehicle of claim 5, wherein, The end of the front mirror sleeve (51) away from the front mirror assembly pressure ring (52) is the first assembly part (53), and the end of the rear mirror sleeve (61) away from the rear mirror assembly pressure ring (62) is the second assembly part (63). The first assembly part (53) and the second assembly part (63) are nested together.

7. The optical engine system suitable for an optically centered vehicle as claimed in claim 6, wherein, The first assembly part (53) is adapted to the front end (42) of the tooling, and the second assembly part (63) is adapted to the rear end (43) of the tooling.

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