Multi-light-spot light source system for detector adjustment and generation device

Abstract

According to the multi-light-spot light source system for detector adjustment and the generation device, a plurality of light sources are arranged and controlled through a multi-light-spot light source array, and the spatial distribution of a light field can be flexibly adjusted. A target plate and a spacing adjusting mechanism are arranged at the front end of the system, so that the center and four angular points of a light-sensitive surface of the detector can be imaged in the precise adjustment process of the optical system detector. By synchronously acquiring the change information of the imaging light spots at the five key positions in the assembling and adjusting process, the deviation between the current position and the ideal position of the detector is effectively confirmed, multi-view-field synchronous adjustment is realized, and the assembling and adjusting efficiency of the detector is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of multi-spot light source system and generating device for detector installation, belong to the field of space optical technology design. BACKGROUND

[0002] The whole machine installation of optical system as the last step of system development, directly affects its optical performance and precision index, how to accurately and reliably complete whole machine installation is a very serious challenge to the development process of optical system.

[0003] At present, optical system adopts the way of single-spot light source combined with multi-dimensional adjustment mechanism to carry out the precise installation of detector in the whole field of view, after completing the precise installation of detector in a field of view direction, the optical system is adjusted by multi-dimensional adjustment mechanism, and then the precise installation of detector in another field of view direction is carried out, the whole adjustment process is difficult to take into account the imaging effect change of detector in multiple fields of view at the same time, which is easy to cause the precise installation of detector in the current field of view, and the detector in the previous field of view deviates from the focal plane, increases the repeated debugging of the whole installation process, which not only increases the time cost of precise debugging, but also is difficult to realize the precise installation of detector in multiple fields of view synchronously. It is urgent to optimize the configuration of light source to meet the precise installation of detector in multiple fields of view synchronously. SUMMARY

[0004] The technical problem solved by the present application is that in the conventional optical system precise installation in the prior art, the single-spot light source combined with multi-dimensional adjustment mechanism is difficult to realize effective monitoring of the focal plane adjustment change of detector in multiple fields of view, and reduces the precise installation efficiency of optical system. A multi-spot light source system for detector installation and a generating device are provided.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] A multi-spot light source system for detector installation, comprising a light source controller, an array light source, a homogenizing plate, a light limiting plate, a target plate and a light spot spacing adjustment mechanism, wherein:

[0007] The light source controller receives the control instruction sent by the user, selects the to-be-emitted light source according to the control instruction, and sends the to-be-emitted light source information to the array light source and adjusts the output power of the to-be-emitted light source;

[0008] The array light source is composed of various types of light sources for detection, selects the corresponding light source according to the to-be-emitted light source information sent by the light source controller and starts to emit;

[0009] The homogenizing plate is arranged in the emission direction of the array light source and homogenizes the emitted light of the array light source;

[0010] A target plate is arranged on the side of the light homogenizing plate in the direction of the outgoing light and serves as an imaging target for the outgoing light of the detector, and the homogenized outgoing light source is imaged;

[0011] A light limiting plate is arranged between the light homogenizing plate and the target plate and serves to adjust the light path of the outgoing light source;

[0012] A light spot spacing adjustment mechanism is arranged on the side of the target plate in the direction of the outgoing light and serves to adjust the positions of the target light spots on the four corners.

[0013] The array light source comprises light emitting units, each of which is independently controlled; when the outgoing light of each light emitting unit overlaps on the target plate, the light homogenizing plate is used to suppress uneven light intensity distribution and improve the beam quality of the outgoing light; the light homogenizing plate is used to eliminate uneven light intensity distribution between the outgoing light of each light emitting unit and scatter or refract the outgoing light to avoid over-brightness or over-darkness in local areas.

[0014] The target plate simultaneously images each outgoing light and restricts the beam energy of each outgoing light to be incident to obtain a corresponding number of imaging targets; the restriction of the incident of each outgoing light is achieved by changing the imaging aperture of the target plate to realize optical adaptation of different light emitting units.

[0015] The light spot spacing adjustment mechanism adjusts and controls the positions of each light spot on the target plate during imaging to ensure that the imaging positions of each light spot on the photosensitive surface of the detector are stable within a preset range; the light spot spacing adjustment mechanism is self-locked to stabilize the imaging positions of each light spot; after imaging is completed, the deviation of the detector from the ideal position is confirmed by collecting the change information of each light spot imaging spot.

[0016] A multi-light-point light source generating device for detector installation and adjustment, comprising a light source controller, an array light source, a light homogenizing plate, a light limiting plate, a light limiting plate support frame, a target plate, a cover plate and a light spot spacing adjustment mechanism, wherein:

[0017] The light source controller is mounted on the array light source housing, the array light source is integrated in the array light source housing in a modular structure, the light homogenizing plate is arranged on the outgoing light path of the array light source to process the outgoing light, and the target plate is arranged on the side of the outgoing light path of the light homogenizing plate to image the outgoing light; the light limiting plate is arranged between the light homogenizing plate and the target plate and is supported and adjusted in position by the light limiting plate support frame; the cover plate is arranged between the target plate and the light limiting plate and is used to fix the light source controller, the array light source, the light homogenizing plate and the light limiting plate; the light spot spacing adjustment mechanism is arranged on the cover plate and connected to the target plate and is used to adjust and stabilize the imaging positions of each light spot.

[0018] The target plate is a thin-walled structure provided with circular through holes, each of which has a different aperture and is used to image different outgoing light sources with corresponding apertures; the light limiting hole is arranged at the front end of the target plate and is used to restrict the beam energy of the outgoing light incident to the circular through hole.

[0019] The target plate is installed on the base, and when imaging of different light sources is needed, the target plate on the base is replaced; the base is provided with an external mounting interface for stabilizing the mounting position and mounting angle of the multi-light-point light source.

[0020] The light point spacing adjusting mechanism comprises outer rotating links, inner rotating links, a self-locking disc and an inner rotating disc, wherein:

[0021] The inner rotating disc is arranged at the central position of the cover plate on the side close to the outgoing light path, one end of each outer rotating link is connected to the inner rotating disc, and the other end is connected to the target plate; the inner rotating link is matched and connected to the inner rotating disc, and the self-locking disc is arranged between the inner rotating link and the inner rotating disc.

[0022] After imaging of different light sources is completed, the self-locking disc is tightened by a self-locking screw to realize adjustment and stabilization of the imaging positions of the light points; after the self-locking disc is locked, each outer rotating link is driven to realize self-locking of the multi-light-point light source generating device.

[0023] The number of outer rotating links is four, each outer rotating link comprises a pivot link and a target hole link, one end of the pivot link is connected to the inner rotating disc, the other end is connected to one end of the target hole link, and the other end of the target hole link is connected to the corresponding target hole of the target plate;

[0024] Under the maximum movement stroke condition of the target hole, the relationship between the length a of the pivot link and the length b of the target hole link is: The maximum distance of the target hole link movement under the imaging target movement stroke condition is The pivot link movement angle θ is: θ≤90°.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] (1) The multi-light-point light source system and generating device for detector installation and adjustment provided by the present application adopts a multi-light-point light source modular arrangement design, can realize more flexible light field distribution by controlling the position and intensity of each light source, meet the requirements of light path alignment, uniformity and the like in detector installation and adjustment, and can provide multiple light points at the same time through the multi-point light source, so that the optical axis of the detector can be positioned more quickly, and the alignment time is shortened.

[0027] (2) The present application simultaneously images the detector center and four corner points through multiple light points, and in the process of precisely installing the detector to the ideal imaging surface, the changes of the five position imaging spots can be acquired synchronously, the deviation between the current position and the ideal position of the detector is effectively confirmed, and then the precise installation is carried out more efficiently, so that the detector installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1The explosion view of the multi-spot light source generating device provided by the application;

[0029] Figure 2 The travel constraint schematic diagram of the imaging target light spot provided by the application;

[0030] Figure 3 The front schematic diagram of the zero position state of the multi-spot light source generating device provided by the application;

[0031] Figure 4 The front schematic diagram of the adjusted state of the multi-spot light source generating device provided by the application. DETAILED DESCRIPTION

[0032] A multi-spot light source system and generating device for detector assembly, through arrangement and control of multiple light sources by a multi-spot light source array, the spatial distribution of the light field can be flexibly adjusted, a target plate and a distance adjusting mechanism are arranged at the front end of the system, so that imaging is realized at the center and four corner points of the photosensitive surface of the detector during precise assembly of the detector in the optical system, through synchronous acquisition of the changes of the imaging light spots at five key positions in the adjustment process, the deviation between the current position and the ideal position of the detector is effectively confirmed, multiple fields of view are synchronously adjusted, and the detector assembly efficiency is improved.

[0033] The multi-spot light source system for detector assembly comprises a light source controller, an array light source, a homogenizing plate, a light limiting plate, a target plate and a light point distance adjusting mechanism.

[0034] The light source controller receives a control instruction sent by a user, selects a to-be-emitted light source according to the control instruction, and sends to-be-emitted light source information to the array light source and adjusts the output power of the to-be-emitted light source;

[0035] The array light source is arranged by various types of light sources for detection, selects corresponding light sources according to the to-be-emitted light source information sent by the light source controller, and starts emission;

[0036] The homogenizing plate is arranged in the emission direction of the array light source and performs homogenization processing on the emitted light of the array light source;

[0037] The target plate is arranged on one side of the emission direction of the homogenizing plate as a detector emitted light imaging target, receives the homogenization-processed emitted light source to perform imaging;

[0038] The light limiting plate is arranged between the homogenizing plate and the target plate and is used for adjusting the light path of the emitted light source;

[0039] The light point distance adjusting mechanism is arranged on one side of the emission direction of the target plate and is used for adjusting the positions of the target light spots at the four corner points.

[0040] The array light source comprises light emitting units, each of which is independently controlled; when the light emitted by each light emitting unit overlaps on a target plate, the light intensity distribution is inhibited by a light homogenizing plate and the light beam quality of the emitted light is improved; the light homogenizing plate is used to eliminate the light intensity distribution between the emitted light of each light emitting unit, and scatter or refract the emitted light to avoid over-brightness or over-darkness in local areas.

[0041] The target plate simultaneously performs imaging of each emitted light, and the light beam energy of each emitted light is constrained to be incident to obtain a corresponding number of imaging targets; the constrained incidence of each emitted light is achieved by changing the imaging aperture of the target plate to realize optical adaptation of different light emitting units.

[0042] The light point spacing adjustment mechanism adjusts and controls the positions of each light point on the target plate during imaging, ensures that the imaging positions of each light point on the photosensitive surface of the detector are stable within a preset range, and the light point spacing adjustment mechanism is self-locked to control the imaging positions of each light point to be stable; after imaging is completed, the positions of each light point are collected to confirm the deviation value of the detector from the ideal position.

[0043] A multi-light-point light source generating device for detector installation and adjustment, comprising a light source controller 1, an array light source 2, a light homogenizing plate 4, a light limiting plate 6, a light limiting plate 6 support frame 3, a target plate 9, a cover plate 7, and a light point spacing adjustment mechanism, wherein:

[0044] The light source controller 1 is mounted on the array light source 2 housing, the array light source 2 is designed in a modular structure and integrated in the array light source 2 housing, a light homogenizing plate 4 is arranged on the light path of the array light source 2 for processing the emitted light, and a target plate 9 is arranged on one side of the light path after the light homogenizing plate 4 for imaging the emitted light; a light limiting plate 6 is arranged between the light homogenizing plate 4 and the target plate 9, and the light limiting plate 6 is supported and adjusted in position by the light limiting plate 6 support frame 3; a cover plate 7 is arranged between the target plate 9 and the light limiting plate 6 for fixing the light source controller 1, the array light source 2, the light homogenizing plate 4, and the light limiting plate 6, and a light point spacing adjustment mechanism is arranged on the cover plate 7 and connected to the target plate 9 for adjusting and stabilizing the imaging positions of each light point.

[0045] The target plate 9 is a thin-walled structure provided with circular through holes, each circular through hole has a different aperture for imaging different emitted light sources corresponding to the apertures; and a light limiting hole is arranged at the front end of the target plate 9 for constraining the light beam energy of the emitted light incident into the circular through hole.

[0046] The target plate 9 is mounted on the base 8, and when imaging of different emitted light sources is needed, the target plate 9 on the base 8 is replaced; the base 8 is provided with an external mounting interface for stabilizing the mounting position and mounting angle of the multi-light-point light source.

[0047] The light point spacing adjustment mechanism comprises an outer rotary link 10, an inner rotary link 11, a self-locking disc, and an inner rotary disc 13, wherein:

[0048] The inner rotating disc 13 is arranged at the central position of the cover plate 7 close to the light exit path, one end of each outer rotating connecting rod 10 is connected to the inner rotating disc 13, and the other end is connected to the target plate 9; the inner rotating connecting rod 11 is matched and connected to the inner rotating disc 13, and the self-locking disc is arranged between the inner rotating connecting rod 11 and the inner rotating disc 13.

[0049] The light spot spacing adjustment mechanism comprises the outer rotating connecting rod 10, the inner rotating connecting rod 11, the self-locking disc and the inner rotating disc 13, wherein:

[0050] The inner rotating disc 13 is arranged at the central position of the cover plate 7 close to the light exit path, one end of each outer rotating connecting rod 10 is connected to the inner rotating disc 13, and the other end is connected to the target plate 9; the inner rotating connecting rod 11 is matched and connected to the inner rotating disc 13, and the self-locking disc is arranged between the inner rotating connecting rod 11 and the inner rotating disc 13.

[0051] The number of the outer rotating connecting rod 10 is four groups, each outer rotating connecting rod 10 comprises a pivot connecting rod and a target hole connecting rod, one end of the pivot connecting rod is connected to the inner rotating disc 13, the other end is connected to one end of the target hole connecting rod, and the other end of the target hole connecting rod is connected to the corresponding target hole of the target plate 9;

[0052] Under the maximum movement stroke condition of the target hole, the relationship between the length a of the pivot connecting rod and the length b of the target hole connecting rod is: The maximum distance of the target hole connecting rod movement under the imaging target movement stroke condition is The movement angle θ of the pivot connecting rod is: θ≤90°.

[0053] The following will be further described in combination with the drawings of the specification and the preferred embodiments:

[0054] In the current embodiment, the light source system and device of the light spot spacing adjustable optical system are designed as follows:

[0055] The light source system comprises a light source controller 1, an array light source 2, a light homogenizing plate 4, a target plate 9, a light spot spacing adjustment mechanism and a base, wherein:

[0056] The array light source 2 is composed of a plurality of independently controlled light emitting units, which can provide more uniform light energy distribution, reduce the "hot spot" or "dark area" that may be generated by the light source, and improve the uniformity and consistency of the system.

[0057] The light source controller 1 can effectively adjust the power of each light emitting unit of the array light source 2, control the output energy of the light emitting unit, and realize effective control of the entire system exit target energy.

[0058] The light homogenizing plate 4 eliminates the uneven light intensity distribution of each independent light emitting unit of the array light source 2 due to its own reasons, makes the overall light field more uniform, and improves the beam quality.

[0059] The target plate 9 is a thin-walled structure with multiple circular through-holes. It serves as multiple imaging targets during the precise alignment of the optical system detector. Target plates 9 with different apertures can be replaced based on the characteristics of the corresponding optical system to adapt to optoelectronic systems with different optical parameters. A limited aperture is provided at the front end to constrain the energy of the beam incident on the circular through-holes.

[0060] The adjustment mechanism consists of four sets of synchronously moving connecting rod mechanisms. During the movement of the target plate 9, except for the fixed position of the central eye hole plate, the other four target holes move in pairs in the vertical direction. This ensures that after the target hole spacing is adjusted for different systems, the imaging positions of the five light spots on the detector's photosensitive surface remain near the detector's center point and the four corner points, so as to quickly confirm the deviation of the optical system detector from its ideal position.

[0061] Each set of connecting rods in the adjustment structure has two connecting rod structures, the length of the connecting rod 1 around the axis is a, and the length of the connecting rod 2 connected to the target hole is b, wherein the angle θ of the movement of the connecting rod 1 satisfies: θ≤90°.

[0062] Adjust the lengths of the two connecting rods so that the length a of connecting rod 1 and the length b of connecting rod 2 satisfy: At this time, the target plate 9 reaches its maximum shape, that is, the maximum distance the connecting rod can reach

[0063] Example 1:

[0064] like Figure 1 As shown, the multi-light-spot device for optical system assembly of this embodiment includes a light source adjuster 1, a light source 2, a support frame 3, a light-diffusing plate 4, a light-limiting plate support frame 5, a light-limiting plate 6, a cover plate 7, a base 8, a target plate 9, an outward-rotating connecting rod 10, an inward-rotating connecting rod 11, an inner rotating shaft 12, and an inner rotating disk 13. The light source 2 is embedded in the support frame 3 and fixed with flat-head screws. The frosted glass 4 is clamped between the support frame 3 and the light-limiting plate support frame 5 and tightly fixed with flat-head screws. The light-limiting plate support frame 5 and the cover plate 7 are also fixed with flat-head screws. An annular groove is left between the light-limiting plate support frame 5 and the cover plate 7. The light-limiting plate 6 is placed in the annular groove of the light-limiting plate support frame 5 through a slot on one side. The base 8, target plate 9, and outward-rotating connecting rod 10 are the same number, and the four groups (base 8, target plate 9, and outward-rotating connecting rod 10) are evenly spaced 90 degrees around the center point of the cover plate 7. The base 8 is embedded in the long groove of the cover 7. The target plate 9 is a thin-walled structure with a circular through hole and is installed on the base 8. The inner rotating link 11 and the inner rotating disk 13 are fixed with screws, and the self-locking disk is embedded in the middle. The outer rotating link 10 and the inner rotating link 11 form a revolving pair. By rotating the inner rotating disk 13, the inner rotating link 11 is driven to perform eccentric circular motion around the center, which in turn drives the target plate 9 on the outer rotating link 10, realizing the vertical movement of the four target plates in pairs.

[0065] like Figure 2The figure shows a schematic diagram of one set of connecting rods in the adjustment mechanism driving the target plate, where a is the length of connecting rod 1, b is the length of connecting rod 2, θ is the angle of movement of connecting rod 1, connecting rod 1 / connecting rod 2 / target hole 1 and connecting rod 1′ / connecting rod 2′ / target 2 are the two extreme positions when the system adjusts the light spot hole. To achieve the maximum adjustment range of the target hole, the maximum connecting rod movement angle θ is set to 90°. Then the target hole's movement range can reach

[0066] like Figure 3 、 Figure 4 As shown in the front view of this embodiment (zero position) and the front view of the present invention (adjusted position), adjusting the inward-rotating connecting rod 11 drives the outward-rotating connecting rod 10 to move, achieving linear motion of the target hole 9 on the base 8 through the limit hole in the cover plate 7. Using four 90-degree arrays, each group of connecting rod assemblies moves in a consistent manner, achieving consistent positional motion distances for the four target holes besides the center hole.

[0067] Although the present invention has been disclosed above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

[0068] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A multi-point light source system for detector assembly and adjustment, characterized by: It includes a light source controller, an array light source, a light dodging plate, a light limiting plate, a target plate and a light spot spacing adjustment mechanism, wherein: The light source controller receives the control instruction sent by the user, selects the light source to be emitted according to the control instruction, sends the information of the light source to be emitted to the array light source, and adjusts the output power of the light source to be emitted; The array light source is composed of various types of light sources for detection. The corresponding light source is selected and started to emit according to the information of the light source to be emitted sent by the light source controller; The light homogenizer is arranged in the direction of the array light source to homogenize the light emitted by the array light source; The target plate is set on the side of the outgoing direction behind the light homogenizer as the imaging target of the detector outgoing light, receiving the outgoing light source after homogenization for imaging; The light limiting plate is set between the light uniforming plate and the target plate, and is used to adjust the light path of the outgoing light source; The light spot spacing adjustment mechanism is set on the side of the target board's rear emission direction and is used to adjust the target light spot positions on the four corner points of the target board's outgoing light source.

2. The multi-point light source system for detector assembly and adjustment according to claim 1, characterized in that: The array light source includes light-emitting units, each of which is independently controlled. When the emitted light from each light-emitting unit overlaps on a target plate, a light homogenizer is used to suppress uneven light intensity distribution and improve the quality of the emitted light beam. The light homogenizer is used to eliminate uneven light intensity distribution between the emitted light from each light-emitting unit and scatter or refract the emitted light to avoid excessive brightness or darkness in local areas.

3. The multi-point light source system for detector assembly and adjustment according to claim 1, characterized in that: The target plate simultaneously images each outgoing light and constrains the incident beam energy of each outgoing light to obtain a corresponding number of imaging targets; the constrained incident beam of each outgoing light achieves optical adaptation of different light-emitting units by changing the imaging aperture of the target plate.

4. The multi-point light source system for detector assembly and adjustment according to claim 3, characterized in that: The light spot spacing adjustment mechanism adjusts and controls the position of each light spot on the target plate during the imaging process to ensure that the imaging position of each light spot on the detector's photosensitive surface is stable within a preset range. The light spot spacing adjustment mechanism is self-lockingly controlled to stabilize the imaging position of each light spot. After imaging is completed, the deviation value of the detector from the ideal position is confirmed by collecting the imaging spot change information of each light spot.

5. A multi-point light source generating device for detector assembly, characterized in that: It includes a light source controller, an array light source, a light uniforming plate, a light limiting plate, a light limiting plate support frame, a target plate, a cover plate and a light spot spacing adjustment mechanism, wherein: The light source controller is mounted on the array light source housing. The array light source is integrated into the array light source housing with a modular structure. A light-diffusing plate is provided on the outgoing light path of the array light source to process the outgoing light. A target plate is provided on the side of the outgoing light path behind the light-diffusing plate for outgoing light imaging. A limiting light plate is provided between the light-diffusing plate and the target plate, and the light-limiting plate is supported and position-adjusted by a light-limiting plate support frame. A cover plate is provided between the target plate and the light-limiting plate to fix the light source controller, array light source, light-diffusing plate and light-limiting plate. The light spot spacing adjustment mechanism is provided on the cover plate and is connected to the target plate at the same time to stabilize the imaging position of each light spot.

6. The multi-point light source generating device for detector assembly and adjustment according to claim 5, characterized in that: The target plate is a thin-walled structure provided with circular through holes, each of which has a different aperture, and is used to achieve imaging of different output light sources with corresponding apertures; a limited light hole is provided at the front end of the target plate to constrain the beam energy of the output light incident on the circular through holes.

7. The multi-point light source generating device for detector assembly and adjustment according to claim 6, characterized in that: The target board is mounted on the base. When imaging of different light sources is required, the target board on the base is replaced. The base is provided with an external mounting interface for stabilizing the mounting position and angle of the multi-point light sources.

8. The multi-point light source generating device for detector assembly and adjustment according to claim 6, characterized in that: The light spot spacing adjustment mechanism includes an outward rotating connecting rod, an inward rotating connecting rod, a self-locking disc and an inner rotating disc, wherein: The inner rotating disk is arranged at the central position of the cover plate close to the side of the output light path. One end of each outer rotating connecting rod is connected to the inner rotating disk, and the other end is connected to the target plate. The inner rotating connecting rod is matched and connected to the inner rotating disk, and the self-locking disc is arranged between the inner rotating connecting rod and the inner rotating disk.

9. The multi-point light source generating device for detector assembly and adjustment according to claim 8, characterized in that: After the self-locking disc completes imaging of different light sources, the imaging position of each light point is adjusted and stabilized by tightening the self-locking screw; after the self-locking disc is locked, it drives each outward rotating connecting rod to realize self-locking of the multi-light point light source generating device.

10. The multi-point light source generating device for detector assembly and adjustment according to claim 8, characterized in that: There are four groups of external rotating connecting rods, each of which includes an axis-wrap connecting rod and a target hole connecting rod. One end of the axis-wrap connecting rod is connected to the inner rotating disk, and the other end is connected to one end of the target hole connecting rod. The other end of the target hole connecting rod is connected to the corresponding target hole of the target plate. Under the condition of the maximum motion stroke of the target hole, the relationship between the length a of the connecting rod around the axis and the length b of the connecting rod of the target hole is: The maximum distance of the target hole connecting rod movement under the imaging target movement range is The angle θ of the connecting rod movement around the axis is: θ≤90°.

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