An optical path adjustment system and method for a focusless optical system with steering capability.

Abstract

This invention provides an optical path adjustment system and method for a focusless optical system with steering capability. The system includes a self-collimating collimator, a horizontal reference assembly, and a vertical reference assembly. The adjustment method includes correction of the main lens barrel connection positioning surface, correction of the reference mirror, and adjustment of the main lens barrel mirror. This device first adjusts the horizontal reference of the mounting positioning surface of the focusless optical system (optical path product) to be adjusted using the horizontal reference mirror, and then adjusts the vertical reference using the vertical reference mirror. The adjustment method can adjust both the incident and exit light angles of the focusless optical system with steering capability, as well as the collimation of the system. The device is simple to operate, highly effective, and ensures excellent incident and exit light angles and collimation performance of the product.

Description

Technical Field

[0001] This invention belongs to the field of optical system detection technology, and particularly relates to an optical path adjustment system and method for a focusless optical system with steering. Background Technology

[0002] An afocal optical system is one where the focal length is infinite. This means that if a beam of parallel light enters an afocal optical system, the outgoing light will also be parallel. Collimation in an afocal optical system refers to its ability to keep parallel or nearly parallel beams of light after they pass through it. In an optical system, if a parallel beam remains parallel after passing through it, the system is said to have good collimation. An afocal optical system typically consists of two main components: a primary mirror and a secondary mirror. The system's collimation is optimal when the focal points of these two components are perfectly aligned. To achieve this, the focal positions of the primary and secondary mirrors in the primary lens barrel must be adjusted. In addition to adjusting the collimation, if the system is a non-centrosymmetric system with steering, the angles of the incident and incoming light must also be adjusted. If the collimation of the primary lens barrel is poor and the angles of the incident and incoming light are off, the light rays will not remain parallel as they pass through the primary lens barrel, resulting in blurred, distorted, or aberrated images.

[0003] Currently, the collimation and incident / exit angles of the primary microscope tube can be adjusted using specialized equipment such as a spectrometer. This equipment employs two autocollimating collimators placed on a turntable with an adjustable angle scale. The angle between the two collimators is first set according to the theoretical incident / exit angles of the system to be adjusted. One collimator emits parallel light, which exits as quasi-parallel light after passing through the primary microscope tube. This quasi-parallel light is received by the other collimator. The collimation and incident / exit angles of the primary microscope tube are judged by the image position and sharpness of the received quasi-parallel light, and adjustments are made accordingly. However, such equipment is bulky and expensive, and requires custom-made positioning fixtures tailored to the structure of the product being adjusted. The collimation adjustment process for such products is cumbersome, and the accumulated adjustment error is significant due to the complexity of the adjustment, affecting the image quality of the primary microscope tube. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses an optical path adjustment system and method for a focusless optical system with steering capability. The device enables rapid and convenient adjustment of the horizontal and vertical references for product placement and optical path adjustment. Subsequently, based on the horizontal and vertical references, the collimation and incident / out-of-light angles of the product can be rapidly adjusted. It features simple operation, significant effects, and ensures excellent product performance.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an optical path adjustment system for a focusless optical system with steering, the system comprising a self-collimating collimator, a horizontal reference assembly, an adjustment device, and a vertical reference assembly, wherein:

[0006] Self-collimating collimator includes:

[0007] First beam splitter;

[0008] The reticle is positioned on one side of the first beam splitter.

[0009] Light source; located on one side of the reticle;

[0010] An imaging receiving device, electrically connected to a display, is disposed on one side of the first beam splitter, and its target surface and the reticle surface are symmetrical with respect to the beam splitting surface of the first beam splitter.

[0011] A collimating objective lens is disposed on one side of the first beam splitter, and the optical axes of the collimating objective lens, the first beam splitter, the imaging receiver, and the reticle are aligned.

[0012] The horizontal reference components include:

[0013] The second beam splitter splits the parallel light emitted from the autocollimating collimator into two paths. One path propagates along the original path, while the other path is reflected by the reflective surface of the second beam splitter and flipped upwards by 90 degrees.

[0014] Adjustment device, which has a mounting and positioning surface;

[0015] A horizontal reference mirror is set on the mounting and positioning surface. It reflects the parallel light from the self-collimating collimator as a reference ray to adjust the alignment of the mounting and positioning surface with the self-collimating collimator.

[0016] The vertical reference component includes:

[0017] An adjustment platform is located on one side of the adjustment device;

[0018] A vertical reference mirror is mounted on the adjustment platform to reflect the parallel light from the self-collimating collimator. The vertical reference mirror is collimated with the self-collimating collimator by adjusting the adjustment platform.

[0019] The defocused optical system with steering has a main lens barrel, which is a right-angle structure. A focusing component is provided inside the main lens barrel, and an adjustable reflector is provided at the right-angle steering point of the main lens barrel.

[0020] After adjusting the mounting surface using the horizontal reference mirror and the imaging receiver, and after adjusting the vertical reference mirror using the adjustment platform, the horizontal reference mirror is removed, and the main lens barrel is placed on the mounting surface. The position of the mirror is adjusted using the imaging receiver, and the focusing assembly is adjusted to make a clear image appear on the imaging receiver, thereby achieving the adjustment of the optical path collimation and sharpness of the main lens barrel.

[0021] Preferably, the adjustment device is a cup reference component connected to a self-collimating collimator, which has a horizontal hole and a vertical hole through which light can pass.

[0022] Parallel light emitted from the self-collimating collimator through the vertical aperture is reflected by the vertical reference mirror and its reflected cross image is received by the imaging receiver. Parallel light emitted from the self-collimating collimator through the horizontal aperture is reflected by the beam-splitting surface of the second beam-splitting prism and its reflected cross image is received by the imaging receiver after being reflected by the horizontal reference mirror.

[0023] Preferably, the mounting positioning surface is aligned with the mounting positioning surface of the primary lens barrel of the afocal optical system to be adjusted.

[0024] An optical path adjustment method for an optical path adjustment system of a focusless optical system with steering as described above includes the following steps:

[0025] Step S1: Reference Mirror Correction

[0026] Parallel light emitted by the self-collimating collimator is split into two paths by the second beam splitter. One path exits through the vertical aperture, is reflected by the vertical reference mirror, and is received by the imaging receiver. The center of the cross image reflected by the vertical reference mirror is adjusted to the center of the screen by the adjustment stage.

[0027] Another path is reflected by the beam-splitting surface of the second beam-splitting prism and the horizontal reference mirror, and then received by the imaging receiving device. The center of the cross image reflected by the horizontal reference mirror is adjusted to the center of the screen by the adjustment device.

[0028] Step S2: Adjustment of the primary mirror tube mirror

[0029] Remove the horizontal reference mirror from the mounting positioning surface and install the main lens tube on the adjustment device. The parallel light from the autocollimating collimator is reflected vertically upward after being reflected by the beam splitting surface of the second beam splitter and enters the main lens tube to be adjusted. After passing through the internal optical system of the main lens tube and the 45-degree reflector, the parallel light is emitted horizontally and is received and reflected by the vertically placed reference mirror. Finally, it is received by the imaging receiving device. By adjusting the 45-degree reflector of the main lens tube, the reflected cross image on the screen is adjusted to the center of the screen, and the adjustment is completed.

[0030] Step S3: Adjustment of optical path collimation

[0031] If the clarity of the reflected cross image of the main lens tube is poor, the focusing assembly inside the main lens tube is adjusted to make the reflected cross image clear, thus completing the adjustment of the optical path collimation of the main lens tube.

[0032] Preferably, in step S1, the reflected images of the horizontal reference mirror and the vertical reference mirror placed on the mounting positioning surface are adjusted to the center of the screen, and the reference of the product to be adjusted is transferred to the vertical reference mirror.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows: the system first uses a horizontal reference mirror to adjust the horizontal reference of the mounting and positioning surface of the product to be adjusted, and then adjusts the vertical reference through a vertical reference mirror to complete the reference transfer. Finally, by adjusting the product mirror, the adjustment method can adjust the output light angle of the afocal optical system with steering, and also adjust the collimation of the system. The device is easy to operate, has significant effects, and ensures excellent product collimation performance. Attached Figure Description

[0034] Figure 1 This is a diagram of the optical path adjustment system of the present invention;

[0035] Figure 2 This is a diagram illustrating the adjustment of the main tube reflector of the present invention;

[0036] Figure 3 This is a schematic diagram of the adjustment platform structure of the present invention.

[0037] In the diagram: 1-Light source; 2-CCD; 3-First beam splitter prism; 4-Reticle; 5-Collating objective lens; 6-Base; 7-Copper ring; 7a-Vertical hole; 7b-Horizontal hole; 8-Second beam splitter prism; 9-Horizontal reference mirror; 11-Adjusting rod; 12-Angle adjustment plate; 13-Vertical reference mirror; 15-Lens; 16-Reflector; 17-Adjusting screw. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the present application.

[0040] See attached document Figure 1-3 As shown, this invention provides an optical path adjustment system for a focusless optical system with steering capability. The system includes a self-collimating collimator, a horizontal reference assembly, an adjustment device, and a vertical reference assembly; wherein,

[0041] like Figure 1 As shown, the self-collimating collimator includes:

[0042] First beam splitter 3.

[0043] The reticle 4 is located on one side of the first beam splitter 3.

[0044] Light source 1 is located on one side of reticle 4.

[0045] The imaging receiving device, preferably a CCD2, is electrically connected to the display and is disposed on one side of the first beam splitter 3. Its target surface and the reticle surface of the reticle 4 are symmetrical with respect to the beam splitting surface of the first beam splitter 3.

[0046] The collimating objective lens 5 is disposed on one side of the first beam splitter 3, and the optical axes of the collimating objective lens 5, the first beam splitter 3, the imaging receiver and the reticle 4 are aligned.

[0047] like Figure 1 As shown, the horizontal reference component includes:

[0048] The second beam splitter 8 splits the parallel light emitted from the autocollimating collimator into two paths. One path propagates along the original path, while the other path is reflected by the reflective surface of the second beam splitter 8 and flipped upwards by 90 degrees.

[0049] The adjustment device includes a base 6 disposed on one side of the collimating objective lens 5. A copper ring 7 is adjustablely disposed on the base 6 (the copper ring 7 is connected to the base 6 by a circumferential screw). A second beam splitter 8, which communicates with and is collimated by the collimating objective lens 5, is disposed at the center of the copper ring 7. The copper ring 7 has a vertical aperture 7a and a horizontal aperture 7b through which light can pass. Parallel light emitted from the collimating collimator is reflected by the vertical reference mirror 13 and its reflected cross image is received by the imaging receiver. Parallel light emitted from the collimating collimator is reflected by the beam splitter surface of the second beam splitter 8. This parallel light has two functions: first, it is reflected by the horizontal reference mirror 9 placed on the mounting positioning surface and its reflected cross image is received by the imaging receiver; second, it is received by the main lens tube to be adjusted, passes through the internal optical system of the main lens tube, is reflected by the vertical reference mirror 13, and returns to the imaging receiver to receive its reflected cross image.

[0050] The horizontal reference reflector 9 is detachably mounted on the adjustment device (copper ring 7). By reflecting the parallel light from the self-collimating collimator, it serves as a reference ray for adjusting the alignment of the mounting positioning surface with the self-collimating collimator, thus guiding the alignment of the mounting positioning surface (i.e., the top surface of the copper ring 7) with the self-collimating collimator.

[0051] like Figure 1 As shown, the vertical reference component includes:

[0052] The regulating platform, which is located on one side of the regulating device, has the following specific structure: Figure 1 As shown, it includes an adjustment mechanism that can be adjusted along three axes (the adjustment mechanism preferably uses plates in different directions and the plates are connected by a screw and slide rail, and each plate is provided with an adjustment rod 11. By rotating the adjustment rod 11, the corresponding plate can be driven to adjust the displacement in three axes), and an angle adjustment plate 12 is provided on the top of the adjustment mechanism that rotates towards the copper ring 7, so that its position and angle can be adjusted.

[0053] A vertical reference mirror 13 is mounted on the adjustment platform to reflect the parallel light from the self-collimating collimator. The vertical reference mirror 13 is collimated with the self-collimating collimator by adjusting the adjustment platform.

[0054] like Figure 2 As shown, the steerable afocal optical system is a product of this patent that is adjusted via an optical path adjustment device. Its steerable configuration is mounted on the adjustment device, and from bottom to top, it has:

[0055] Lens 15 is mounted on the upper side of the mounting and positioning surface;

[0056] The reflector 16 is positioned above the lens 15.

[0057] Specifically, the parallel light emitted from the hole 7b is horizontally emitted after passing through the lens 15 and the reflector 16 of the defocused optical system with steering, and then reflected by the vertical reference reflector 13. Finally, it is received by the CCD 2, and the image is adjusted to the center of the screen by adjusting the reflector 16.

[0058] Based on the above-described apparatus, this application also provides a method for adjusting the optical path of an afocal optical system with steering, comprising the following steps:

[0059] Step S1: Vertical reference mirror 13 calibration

[0060] Parallel light emitted by the self-collimating collimator is split into two paths by the second beam splitter 8. One path is directly reflected by the vertical reference mirror 13 and received by the imaging receiver, thus adjusting the center of the cross image reflected by the vertical reference mirror 13 to the center of the screen.

[0061] The other path is reflected by the beam splitting surface of the second beam splitter 8 and the horizontal reference mirror 9, and then received by the imaging receiver. The center of the cross image reflected by the horizontal reference mirror 9 is adjusted to the center of the screen by adjusting the base 6.

[0062] Step S2: Adjustment of the primary mirror tube reflector 16

[0063] Remove the horizontal reference mirror 9 from the mounting positioning surface and install the main lens tube on the adjustment device. The parallel light from the self-collimating collimator is reflected vertically upward after being reflected by the beam splitting surface of the second beam splitter 8 and enters the main lens tube to be adjusted. After passing through the internal optical system of the main lens tube and the 45-degree reflector 16, the parallel light is emitted horizontally and is received and reflected by the vertical reference mirror 13. Finally, it is received by the imaging receiver. By adjusting the 45-degree reflector 16 of the main lens tube, the reflected cross image on the screen is adjusted to the center of the screen, and the adjustment is completed.

[0064] Step S3: Adjustment of optical path collimation

[0065] If the clarity of the reflected cross image of the main lens tube is poor, it indicates that the optical system inside the main lens tube is out of focus. In this case, by adjusting the focusing components inside the main lens tube, the reflected cross image can be made clear, thus completing the adjustment of the optical path collimation of the main lens tube.

[0066] The principle of the optical path adjustment system of the aforementioned afocal optical system with steering is mainly as follows:

[0067] The principle of this application is as follows: First, a reference mirror 9 is placed on the copper ring 7 to emit parallel light from the self-collimating collimator. The position of the copper ring 7 is adjusted until the reflected light from the horizontal reference mirror 9 appears as a central crosshair on the screen connected to the imaging receiver. Then, the mounting and positioning surface of the top port of the copper ring 7 is aligned with the collimator of the self-collimating collimator. A reference mirror 13 is placed on the adjustment platform to the right of the copper ring 7 to emit parallel light from the self-collimating collimator. The light is split into two paths by the second beam splitter 8. One path is directly reflected by the reference mirror 13 and received by the imaging receiver. The vertical line of the reflected image from the reference mirror 13 is adjusted to the center of the screen of the imaging receiver by the adjustment platform.

[0068] Next, install the main lens tube (product) on the copper ring 7, adjust the reflector 16 of the main lens tube, and adjust the reflected image received by the imaging receiver to the center of its screen (crosshair spot), thus completing the collimation adjustment of the main lens tube.

[0069] Although embodiments of the invention have been shown and described, it is obvious that many modifications and variations can be made based on the content of this specification. These embodiments have been selected and specifically described in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to well understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An optical path adjusting system of a vergence-free optical system, characterized by: The system comprises a collimator, a horizontal reference assembly, an adjusting device and a vertical reference assembly, wherein: The collimator comprises: a first light splitting prism; a scale plate arranged on one side of the first light splitting prism; a light source arranged on one side of the scale plate; an imaging receiving device electrically connected with a display, arranged on one side of the first light splitting prism, and having a target surface and a scale surface of the scale plate symmetric to a light splitting surface of the first light splitting prism; a collimating objective arranged on one side of the first light splitting prism, and having an optical axis aligned with the first light splitting prism, the imaging receiving device and the scale plate; The horizontal reference assembly comprises: a second light splitting prism for splitting the parallel light emitted by the collimator into two paths, one of which propagates along the original path, and the other of which is reflected by a reflecting surface of the second light splitting prism and then flipped by 90 degrees upward; The adjusting device has a mounting positioning surface; a horizontal reference mirror arranged on the mounting positioning surface, and reflecting the parallel light of the collimator as a reference light for adjusting the mounting positioning surface and the collimation of the collimator; The vertical reference assembly comprises: an adjusting table arranged on one side of the adjusting device; a vertical reference mirror arranged on the adjusting table, and reflecting the parallel light of the collimator and adjusted by the adjusting table and the collimation of the collimator; The afocal optical system with a turning mirror has a main lens barrel in a right angle structure, a focusing assembly arranged in the main lens barrel, and an adjustable reflecting mirror arranged at a right angle turning position of the main lens barrel; After the mounting positioning surface is adjusted by the horizontal reference mirror and the imaging receiving device, and the vertical reference mirror is adjusted by the adjusting table, the horizontal reference mirror is removed, the main lens barrel is placed on the mounting positioning surface, the position of the reflecting mirror is adjusted by imaging of the imaging receiving device, and the focusing assembly is adjusted to make the imaging receiving device present a clear image, so that the collimation and clarity of the optical path of the main lens barrel are adjusted.

2. The optical path adjusting system of the catadioptric afocal optical system according to claim 1, wherein: The adjusting device is a cup reference element connected with the collimator, and has horizontal and vertical holes through which light passes; The vertical hole emits the parallel light from the collimator, reflects the parallel light by the vertical reference mirror, and then receives the reflected cross image by the imaging receiving device; The horizontal hole emits the parallel light from the collimator, reflects the parallel light by the horizontal reference mirror, and then receives the reflected cross image by the imaging receiving device.

3. The optical path adjusting system of the catadioptric afocal optical system according to claim 1, wherein: The mounting positioning surface is matched with the mounting positioning surface of the main lens barrel of the afocal optical system to be adjusted.

4. A light path adjusting method of a light path adjusting system of a turning afocal optical system according to claim 1, characterized by, The method comprises the following steps: Step S1: reference mirror correction The collimator emits parallel light, which is split into two paths by the second light splitting prism, one of which is emitted through the vertical hole, reflected by the vertical reference mirror, and then received by the imaging receiving device, and the center of the reflected cross image of the vertical reference mirror is adjusted to the center of the screen by the adjusting table. Another path is reflected by the second light splitting prism, reflected by the horizontal reference mirror, and received by the imaging receiving device. The cross-shaped image reflected by the horizontal reference mirror is adjusted to the center of the screen by the adjusting device. Step S2: main mirror barrel mirror adjustment Remove the horizontal reference mirror on the installation positioning surface, install the main mirror barrel on the adjusting device, and the parallel light from the autocollimator enters the main mirror barrel vertically upward after being reflected by the light splitting surface of the second light splitting prism. The parallel light is horizontally emitted after passing through the internal optical system of the main mirror barrel and the 45-degree mirror, is received and reflected by the vertically placed reference mirror, and is finally received by the imaging receiving device. The reflected cross-shaped image on the screen is adjusted to the center of the screen by adjusting the 45-degree mirror of the main mirror barrel, and the adjustment is completed. Step S3: light path collimation adjustment If the definition of the reflected cross-shaped image of the main mirror barrel is poor, adjust the focusing assembly inside the main mirror barrel to make the reflected cross-shaped image clear, and complete the light path collimation adjustment of the main mirror barrel.

5. The optical path adjusting method of the optical path adjusting system of the catoptric afocal optical system according to claim 4, characterized in that: In the step S1, the reflected image positions of the horizontal reference mirror and the vertical reference mirror placed on the installation positioning surface are adjusted to the center of the screen, and the reference of the product to be adjusted is transferred to the vertical reference mirror.

Images