A rear focus position and depth of field adjustable periscope lens

Abstract

The application relates to a rear focal position and depth of field adjustable periscope lens, relates to the field of flying probe test machine camera devices, and comprises a fixing structure arranged on a lens holder, a mirror and a photoelectric module, wherein the photoelectric module is arranged opposite to the mirror, the mirror can transmit the light signal of a material into the photoelectric module, the lens holder is provided with a mirror seat for bonding the mirror, the fixing structure is connected with the mirror, and the fixing structure can fixedly support the mirror; the mirror is fixedly supported by the fixing structure, and the mirror is fixedly bonded with the mirror seat, so that the light signal of the material can be stably and reliably reflected into the photoelectric module, and the stability of periscope lens operation is improved.

Description

Technical Field

[0001] This application relates to the field of flying needle tester camera devices, and more particularly to a periscope lens with adjustable back focus position and depth of field. Background Technology

[0002] The periscope telephoto lens of a flying probe testing machine is a core optical component in precision electronic testing, commonly used for quality inspection of precision components such as periscope telephoto lens modules and PCBs. Its technical logic is as follows: first, it compresses its size through an optical path folding design to fit the compact space layout of the flying probe testing machine; then, it captures minute details of the component using a high-resolution optical structure; and finally, it uses image algorithms to accurately identify lens defects and assembly deviations. This lens, relying on a high-transmission prism and a precision focusing system, balances portability and observation accuracy, adapting to the testing needs of precision electronic components of various specifications.

[0003] In the prior art, the periscope telephoto lens of the flying probe tester includes at least a mirror group (including the lens frame), a focusing module, and an image sensor. The light signal of the material is refracted into the lens barrel by the mirrors in the mirror group, then focused by the objective lens group in the focusing module, and finally transmitted to the image sensor to be converted into an electrical signal to support basic detection functions.

[0004] However, in the existing technology, in the precision testing work of the periscope telephoto lens in the flying needle test machine, the reflector and the reflector mount in its reflector group are usually fixed by adhesive. They are in the high-frequency vibration environment of the machine for a long time, and there are also the effects of humidity and temperature changes during the test. The adhesive is prone to aging and loosening, making it difficult for the reflector and the reflector to maintain a stable connection under long-term operation, resulting in poor stability of periscope lens operation. Utility Model Content

[0005] In order to maintain a stable connection between the reflector and the mirror mount and improve the stability of the periscope telephoto lens, this application provides a periscope lens with adjustable back focus position and depth of field.

[0006] The periscope lens with adjustable back focal position and depth of field provided in this application adopts the following technical solution: A periscope lens with adjustable back focus and depth of field includes a fixing structure, a reflector, and an optoelectronic module mounted on a lens frame. The optoelectronic module is disposed opposite to the reflector, and the reflector can transmit light signals from materials to the optoelectronic module. The lens frame is provided with a reflector mount for attaching the reflector. The fixing structure is connected to the reflector and can fix and support the reflector.

[0007] By adopting the above technical solution, when the flying probe tester detects materials, the reflector can continuously reflect the light signal of the material into the photoelectric module. The fixing structure clamps and fixes the reflector on the frame, preventing the reflector from detaching under the vibration generated by the machine's long-term operation. This application adopts a double fixing scheme, which not only supports and fixes the reflector through the fixing structure, but also uses the adhesive to fix the reflector mount to the reflector, so that the light signal of the material can be stably and reliably reflected into the photoelectric module, improving the stability of the periscope lens operation.

[0008] Preferably, the fixing structure includes a frame disposed on the reflector mount, and the frame has a insertion slot for inserting the reflector. The insertion slot is adapted to the reflector, and the frame can fix the reflector on the reflector mount.

[0009] By adopting the above technical solution, the reflector is fixedly supported on the mirror frame through the insertion slots in the frame. During long-term operation of the machine, the insertion slots in the frame can resist the displacement force caused by vibration, making the reflector relatively stable in the frame and improving the reliability of the reflector fixation.

[0010] Preferably, the fixing structure further includes a fixing plate, which is disposed at the entrance of the insertion slot and fixedly connected to the frame so as to support and fix the reflector within the frame.

[0011] By adopting the above technical solution, when the reflector is inserted into the slot of the frame, the fixing plate provides support to the reflector from the entrance side, preventing the reflector from sliding out of the slot under gravity or vibration, thus improving the stability of the fixing structure.

[0012] Preferably, a first elastic element is provided on the side of the frame near the photoelectric module. One end of the first elastic element is connected to the frame, and the other end abuts against the reflector. The first elastic element is used to press and fix the reflector against the reflector mount.

[0013] By adopting the above technical solution, the first elastic element is connected to the frame at one end and abuts against the reflector at the other end, so that the first elastic element can continuously press against the reflector, thereby improving the stability of the reflector installation.

[0014] Preferably, a first bolt is embedded on the side of the frame near the photoelectric module. The first bolt is threadedly connected to the frame and fixedly connected to the first elastic element.

[0015] By adopting the above technical solution, rotating the first bolt can adjust the degree of deformation of the first elastic element, thereby adjusting the magnitude of the clamping force of the first elastic element on the reflector and improving the flexibility of adjusting the first elastic element.

[0016] Preferably, the reflector mount is provided with an injection hole that extends through the reflector, so as to bond the reflector to the reflector mount.

[0017] By adopting the above technical solution, after the reflector is initially fixed on the reflector base, glue is injected between the reflector and the reflector base through the glue injection hole. After the glue cures, it will bond the two together, making the connection between the reflector and the reflector base more reliable and improving the firmness of the reflector fixation.

[0018] Preferably, the glue injection hole includes a first glue injection hole and a second glue injection hole, and the first glue injection hole and the second glue injection hole are connected by a glue injection groove.

[0019] By adopting the above technical solution, when the two sets of glue injection holes are filled with glue, the glue can flow between the two sets of glue injection holes through the glue injection groove. During the flow, the air in the gap between the reflector and the reflector seat can be discharged from the glue injection hole or the glue injection groove, avoiding the residual air bubbles in the glue injection hole and improving the stability of the reflector bonding and fixing.

[0020] Preferably, one side of the glue injection groove extends through to the reflector.

[0021] By adopting the above technical solution, the adhesive injection groove extends through one side to the reflector, thereby increasing the bonding area between the reflector and the reflector mount and improving the firmness of the reflector's bonding and fixation.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When the flying probe tester detects materials, the reflector continuously reflects the light signal from the material into the photoelectric module. The fixing structure clamps and fixes the reflector to the frame to prevent the reflector from detaching due to vibrations generated during long-term machine operation. This application adopts a dual fixing scheme, which supports and fixes the reflector through the fixing structure and uses adhesive to fix the reflector to the reflector mount, so that the light signal from the material can be stably and reliably reflected into the photoelectric module, improving the stability of periscope lens operation.

[0023] 2. The mirror is fixed and supported on the mirror frame by the plug-in slots in the frame. During long-term operation of the machine, the fitting structure of the plug-in slots can resist the displacement force caused by vibration, so that the mirror is relatively stable in the frame and the reliability of the mirror fixation is improved.

[0024] 3. When the two sets of glue injection holes are filled, the glue can flow between the two sets of glue injection holes through the glue injection groove. During the flow, the air in the gap between the reflector and the reflector seat can be discharged from the glue injection hole or the glue injection groove, avoiding the residual air bubbles in the glue injection hole and improving the stability of the reflector bonding and fixing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a periscope lens with adjustable back focus position and depth of field according to an embodiment of this application.

[0026] Figure 2 It is a top-down view showing the periscope lens.

[0027] Figure 3 It is along Figure 2 A cross-sectional view along line AA in the middle.

[0028] Figure 4 yes Figure 3 Enlarged view of section B in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Triangle plate; 2. Fixing structure; 3. Frame; 31. Insertion slot; 32. First elastic element; 33. First telescopic spring; 34. First bolt; 4. Fixing plate; 41. Second elastic element; 42. Second telescopic spring; 43. Second bolt; 5. Reflector; 6. Reflector mount; 61. Ear plate; 62. Glue injection hole; 63. First glue injection hole; 64. Second glue injection hole; 65. Glue injection groove; 7. Photoelectric module; 71. Lens assembly; 72. Optical sensor; 73. Knob; 74. Aperture. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0031] This application discloses a periscope lens with adjustable back focus position and depth of field.

[0032] Reference Figure 1 , Figure 2 A periscope lens with adjustable back focus and depth of field includes a fixed structure 2 mounted on a lens frame 1, a reflector 5, and an optoelectronic module 7 (see reference). Figure 3 The periscope frame 1 is a rectangular cylinder, the reflector 5 is a rectangular body, and the photoelectric module 7 is positioned opposite to the reflector 5. The reflector 5 can transmit the light signal of the material to the photoelectric module 7. The frame 1 is provided with a reflector seat 6 for the reflector 5 to be glued. The fixing structure 2 is connected to the reflector 5 and can fix and support the reflector 5. By fixing and supporting the reflector 5 through the fixing structure 2, and by using the reflector seat 6 to glue and fix the reflector 5, the light signal of the material can be stably and reliably reflected into the photoelectric module 7, which improves the stability of the periscope lens operation.

[0033] Triangular plates 11 extend from the front and rear sides of the mirror frame 1 on the side closest to the mirror base 6. In this embodiment, the inclined angle of the inclined surface of each triangular plate 11 is 45°, and the distance between it and the mirror frame 1 gradually decreases from bottom to top. The mirror base 6 is inclined at 45° in the horizontal direction, and the distance between it and the mirror frame 1 gradually decreases from bottom to top. Ear plates 61 extend from both sides of the mirror base 6. The ear plates 61 correspond one-to-one with the triangular plates 11 and are fixedly connected to the triangular plates 11 by bolts, so that the mirror 5 attached to the mirror base 6 is set at 45°.

[0034] Reference Figure 3 , Figure 4 The fixing structure 2 includes a frame 3 and a fixing plate 4. The frame 3 is inclinedly set on the side of the reflector base 6 near the mirror frame 1 by bolts. The bottom end of the frame 3 is provided with a insertion slot 31 for the reflector 5 to be inserted. The insertion slot 31 is adapted to the reflector 5 and is parallel to the reflector base 6. The reflector 5 is inserted into the frame 3 at a 45° angle, so that the frame 3 can fix the reflector 5 on the reflector base 6. During long-term operation of the machine, the insertion slot 31 in the frame 3 can resist the displacement force caused by vibration, so that the reflector 5 is relatively stable in the frame 3, improving the reliability of the fixation of the reflector 5.

[0035] A first elastic element 32 is provided on the side of the frame 3 near the mirror holder 1. The first elastic element 32 is a first telescopic spring 33. There are four sets of first telescopic springs 33. The four sets of first telescopic springs 33 are arranged between the reflector 5 and the frame 3, and are located at the four right angles of the reflector 5. A first bolt 34 is embedded on the side of the frame 3 near the mirror holder 1. There are four sets of first bolts 34, and they correspond one-to-one with the first telescopic springs 33. The first bolts 34 are threaded to the frame 3. The setting direction of the first bolts 34 is perpendicular to the setting direction of the reflector 5. One end of each set of first telescopic springs 33 is fixedly connected to the first bolt 34, and the other end abuts against the reflector 5, so that the first telescopic springs 33 can press and fix the reflector 5 against the reflector seat 6. Rotating the first bolts 34 can adjust the deformation degree of the first telescopic springs 33, thereby adjusting the magnitude of the pressing force of the first telescopic springs 33 on the reflector 5, improving the firmness of the reflector 5 installation and the flexibility of the adjustment of the first telescopic springs 33.

[0036] A fixing plate 4 is positioned at the entrance of the insertion slot 31. The length of the fixing plate 4 is equal to the thickness of the frame 3. The fixing plate 4 is perpendicular to the frame 3 and is fixedly connected to the bottom end of the frame 3 by bolts, thereby providing support for the reflector 5 and preventing the reflector 5 from sliding out of the insertion slot 31 under gravity or vibration. Two sets of second elastic elements 41, which are second telescopic springs 42, are provided on the side of the fixing plate 4 closest to the reflector 5. The two sets of second telescopic springs 42 are positioned between the reflector 5 and the fixing plate 4. Two sets of second bolts are also provided on the fixing plate 4. 43. The second bolt 43 corresponds one-to-one with the second telescopic spring 42 and is threadedly connected to the fixing plate 4. The setting direction of the second bolt 43 is parallel to the setting direction of the reflector 5. One end of each set of second telescopic springs 42 is fixedly connected to the second bolt 43, and the other end abuts against the reflector 5, so that the second telescopic spring 42 can press and fix the reflector 5 against the reflector seat 6. The fixing plate 4 provides support for the reflector 5 from the entrance side, preventing the reflector 5 from sliding out of the insertion slot 31 under gravity or vibration, and improving the stability of the fixing plate 4.

[0037] The reflector mount 6 has an adhesive injection hole 62 on its surface away from the mirror frame 1. The adhesive injection hole 62 includes a first adhesive injection hole 63 and a second adhesive injection hole 64. One side of the first adhesive injection hole 63 and the second adhesive injection hole 64 are connected to the reflector 5, and the other side is connected to the outside, which facilitates the injection of adhesive to bond the reflector 5 to the reflector mount 6. The reflector mount 6 has an adhesive injection groove 65 inside, with one side of the groove 65 extending to the first adhesive injection hole 63 and the other side extending to the second adhesive injection hole 64. Furthermore, one side of the glue injection groove 65 extends to the reflector 5. When glue is injected into the first glue injection hole 63 and the second glue injection hole 64, the glue is injected from the first glue injection hole 63 and flows out from the second glue injection hole 64 along the glue injection groove 65, thereby effectively expelling the air in the gap between the reflector 5 and the reflector seat 6 and avoiding residual air bubbles from affecting the bonding effect. In addition, the fact that one side of the glue injection groove 65 extends to the reflector 5 increases the contact area for glue bonding and improves the firmness of the bonding and fixing of the reflector 5.

[0038] Reference Figure 3 The photoelectric module 7 includes a lens assembly 71 and an optical sensor 72. A knob 73 is rotatably mounted on the frame 1. The lens assembly 71 is located inside the frame 1 and connected to the knob 73, so that the knob 73 can adjust the position of the lens assembly 71, thereby adjusting the focal length of the periscope lens. The optical sensor 72 is located downstream of the lens assembly 71. An aperture 74 is also provided inside the frame 1. The aperture 74 is located between the lens assembly 71 and the optical sensor 72. By adjusting the size of the aperture 74, the depth of field of the periscope lens can be adjusted.

[0039] The implementation principle of a periscope lens with adjustable back focus and depth of field in this application embodiment is as follows: During the installation of the reflector 5, the reflector 5 is first inserted into the insertion slot 31 in the frame 3, and then the fixing plate 4 is fixed to the bottom of the frame 3 with bolts to achieve a supporting function. Next, the four sets of first bolts 34 on the frame 3 are rotated to press the reflector 5 against the reflector seat 6. Then, the ear plates 61 on both sides of the reflector seat 6 are aligned with the triangular plate 11 of the lens frame 1 and fixed with bolts. Finally, glue is filled into the first glue injection hole 63, the second glue injection hole 64 and the glue injection groove 65. After the glue cures, the installation is completed. The reflector 5 is supported and fixed by the fixing structure 2, and the reflector seat 6 and the reflector 5 are fixed by adhesive, so that the light signal of the material can be stably and reliably reflected into the photoelectric module 7, which improves the stability of the periscope lens operation.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A periscope lens with adjustable back focus position and depth of field, characterized in that: The device includes a fixing structure (2) mounted on a frame (1), a reflector (5), and a photoelectric module (7). The photoelectric module (7) is positioned opposite to the reflector (5). The reflector (5) can transmit the light signal of the material to the photoelectric module (7). The frame (1) is provided with a reflector mount (6) for attaching the reflector (5). The fixing structure (2) is connected to the reflector (5) and can fix and support the reflector (5).

2. The periscope lens with adjustable back focus and depth of field according to claim 1, characterized in that: The fixing structure (2) includes a frame (3), which is disposed on the reflector mount (6). The frame (3) has a insertion slot (31) for inserting the reflector (5). The insertion slot (31) is adapted to the reflector (5). The frame (3) can fix the reflector (5) on the reflector mount (6).

3. The periscope lens with adjustable back focus and depth of field according to claim 2, characterized in that: The fixing structure (2) also includes a fixing plate (4), which is disposed at the entrance of the insertion slot (31) and fixedly connected to the frame (3) so as to support and fix the reflector (5) in the frame (3).

4. The periscope lens with adjustable back focus and depth of field according to claim 2, characterized in that: The frame (3) has a first elastic element (32) on the side near the photoelectric module (7). One end of the first elastic element (32) is connected to the frame (3), and the other end abuts against the reflector (5). The first elastic element (32) is used to press and fix the reflector (5) against the reflector seat (6).

5. The periscope lens with adjustable back focus and depth of field according to claim 4, characterized in that: The frame (3) is fitted with a first bolt (34) on the side near the photoelectric module (7). The first bolt (34) is threadedly connected to the frame (3) and fixedly connected to the first elastic element (32).

6. The periscope lens with adjustable back focus and depth of field according to claim 1, characterized in that: The reflector base (6) is provided with an injection hole (62), which extends through to the reflector (5) so that the reflector (5) can be bonded to the reflector base (6).

7. The periscope lens with adjustable back focus and depth of field according to claim 6, characterized in that: The glue injection hole (62) includes a first glue injection hole (63) and a second glue injection hole (64), and the first glue injection hole (63) and the second glue injection hole (64) are connected by a glue injection groove (65).

8. The periscope lens with adjustable back focus and depth of field according to claim 7, characterized in that: One side of the glue injection groove (65) extends through to the reflector (5).

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