Adsorption assembly and lens core adjusting device

Abstract

The utility model belongs to the technical field of lens assembly, and discloses an adsorption assembly and a lens core adjusting device, the adsorption assembly comprises an adsorption jig, the adsorption jig is provided with an adsorption air hole, an external air hole and an adsorption air channel, the adsorption air hole is communicated with the external air hole through the adsorption air channel, the external air hole is used for being communicated with external vacuumizing equipment, and the adsorption air channel is communicated with the adsorption jig. An adsorption surface and a detection hole penetrating up and down are formed in the adsorption jig, and the adsorption jig can adsorb the lens to the adsorption surface through the adsorption air hole and enable the lens to be located at the lower end of the detection hole. According to the adsorption assembly provided by the utility model, the negative pressure space is formed between the adsorption jig and the lens to adsorb and fix the lens, so that the follow-up property of the lens is improved, the mounting position between the lens and the lens barrel is accurately adjusted, and the imaging quality of the lens is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lens assembly technical field especially relates to a kind of adsorption subassembly and lens core adjusting device. BACKGROUND

[0002] MTF core adjusting technology is a kind of technology that improves the imaging quality of optical system by detecting and adjusting the MTF (Modulation Transfer Function) value of optical system.

[0003] In the assembly process of lens and lens barrel, three-jaw chuck is usually used to hold lens to drive lens to adjust position, since there is gap between lens and chuck, there is virtual position when chuck moves, so there is certain error between actual position of lens and ideal position, which may cause MTF value of lens to be low, affecting the definition and detail performance of image.

[0004] Therefore, an adsorption subassembly and lens core adjusting device are needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an adsorption subassembly and lens core adjusting device, which adsorbs and fixes lens by forming negative pressure space between adsorption jig and lens, improves the followability of lens, to accurately adjust the installation position between lens and lens barrel, and improves the imaging quality of lens.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In the first aspect, an adsorption subassembly is provided, which includes an adsorption jig, the adsorption jig is provided with an adsorption air hole, an external air hole and an adsorption air duct, the adsorption air hole and the external air hole are communicated through the adsorption air duct, the external air hole is used to communicate with external vacuum equipment, the adsorption jig is formed with an adsorption surface and a detection hole which is vertically arranged, the adsorption jig can adsorb lens on the adsorption surface through the adsorption air hole, and the lens is located at the lower end of the detection hole.

[0008] As a preferred embodiment, the adsorption air hole is arranged on the hole wall of the detection hole, the lower end of the adsorption air hole protrudes from the lower surface of the adsorption subassembly, the adsorption surface is the lower end surface of the adsorption air hole, the adsorption subassembly further includes a sealing lens, the sealing lens is sealingly arranged at the upper end of the detection hole, when the adsorption surface presses against the lens, a negative pressure space can be formed in the detection hole.

[0009] As a preferred embodiment, the adsorption air hole, the external air hole and the adsorption air duct are each provided with at least two, one end of each adsorption air duct is communicated with one adsorption air hole, and the other end is communicated with one external air hole.

[0010] As preferred, the detection hole is arranged at the middle of the adsorption jig, and the adsorption jig is further provided with a plurality of light transmission holes, the plurality of light transmission holes are distributed around the periphery of the detection hole, and each of the plurality of light transmission holes is provided with a waist-shaped hole structure.

[0011] As preferred, the adsorption jig is made of metal material.

[0012] In a second aspect, a lens core adjusting device is provided, comprising:

[0013] a mounting seat;

[0014] a lifting slide installed on the mounting seat, and an output end of the lifting slide is capable of lifting in a vertical direction;

[0015] a pressing plate slidingly arranged on the mounting seat in a vertical direction, and a first end of the pressing plate is in transmission connection with the output end of the lifting slide; and

[0016] the adsorption assembly as described above, and the adsorption jig is detachably installed on a second end of the pressing plate.

[0017] As preferred, the lens core adjusting device further comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are both connected to the output end of the lifting slide;

[0018] the first connecting plate is capable of upwardly supporting the first end;

[0019] the second connecting plate is capable of downwardly pressing the first end.

[0020] As preferred, a first pressure sensor is installed on the first connecting plate, and the first pressure sensor is arranged between the first connecting plate and a lower surface of the pressing plate;

[0021] when the output end of the lifting slide moves upwardly, the first pressure sensor is capable of pressing against the lower surface of the pressing plate.

[0022] As preferred, a second pressure sensor is installed on the second connecting plate, and the second pressure sensor is arranged between the second connecting plate and an upper surface of the pressing plate;

[0023] when the output end of the lifting slide moves downwardly, the second pressure sensor is capable of pressing against the upper surface of the pressing plate.

[0024] As preferred, a floating connection assembly is further included, the floating connection assembly includes a floating shaft and a floating spring, a lower end of the floating shaft is connected to the first end portion, an upper end of the floating shaft is penetrated through the second connecting plate through a linear bearing, the floating spring is sleeved outside the floating shaft, and two ends of the floating spring are respectively abutted or connected with the second connecting plate and the lower pressing plate.

[0025] The present application has the following beneficial effects:

[0026] The adsorption assembly is communicated with the vacuumizing equipment through the external air holes of the adsorption jig, when the adsorption surface of the adsorption jig is close to the lens, the vacuumizing equipment extracts the gas between the adsorption jig and the lens through the adsorption air holes, so that a negative pressure space is formed between the adsorption jig and the lens, and then the lens is adsorbed and fixed, the detection hole is arranged on the adsorption jig in a penetrating manner, the lens is adsorbed and fixed to be located at the lower end of the detection hole, and it is ensured that the lens can be detected by the light. In summary, the adsorption assembly can stably fix the lens, the lens can be synchronously moved when the adsorption jig is moved, the movement error between the adsorption jig and the lens is eliminated, the follow-up property of the lens is improved, the installation position between the lens and the lens barrel is accurately adjusted, and the imaging quality of the lens is improved.

[0027] The lens core adjusting device provided by the present application can adsorb and fix the lens through the adsorption assembly, so that the lens can be synchronously moved with the horizontal movement of the lens core adjusting device as a whole, thereby accurately adjusting the installation position between the lens and the lens barrel and improving the imaging quality of the lens. In addition, the adsorption jig can be detachably installed on the lower pressing plate, when the type or size of the lens to be installed is switched, only the adsorption jig of the corresponding size needs to be replaced, and the use flexibility is high. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the lens core adjusting device provided by the present application;

[0029] Figure 2 is a structural schematic view of the adsorption assembly provided by the present application;

[0030] Figure 3 is a sectional view of the adsorption jig provided by the present application.

[0031] In the drawings:

[0032] 100, adsorption jig; 1, adsorption air hole; 2, external air hole; 3, adsorption air duct; 4, detection hole; 41, adsorption surface; 5, light transmission hole; 6, mounting hole;

[0033] 200, sealed lens;

[0034] 10, mounting seat; 20, lifting slide; 30, pressing plate; 301, first end; 302, second end; 303, clearance hole; 40, first connecting plate; 50, second connecting plate; 501, height adjusting hole; 61, first pressure sensor; 62, second pressure sensor; 70, floating connection assembly; 81, lifting slide rail; 82, lifting slide block; 83, lifting connecting plate. DETAILED DESCRIPTION

[0035] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description, not all the structures.

[0036] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0039] The embodiment provides a lens core adjusting device for adsorbing and fixing a lens and driving the lens to ascend and descend, so that the lens is away from or pressed against a lens barrel. The lens core adjusting device is installed on a horizontal moving device, and the horizontal moving device drives the lens core adjusting device to horizontally move, so as to adjust the installation position of the lens and the lens barrel. Figures 1-3 As shown in the figure, the lens core adjusting device comprises a mounting seat 10, an ascending and descending slide 20, a pressing plate 30 and an adsorption assembly. The ascending and descending slide 20 is installed on the mounting seat 10, and the output end of the ascending and descending slide 20 can ascend and descend along the vertical direction. The pressing plate 30 is slidably arranged on the mounting seat 10 along the vertical direction. The first end portion 301 of the pressing plate 30 is in transmission connection with the output end of the ascending and descending slide 20. The adsorption jig 100 is detachably installed on the second end portion 302 of the pressing plate 30.

[0040] Further, as shown in the figures, Figure 2 and Figure 3 The adsorption assembly comprises the adsorption jig 100. The adsorption jig 100 is provided with an adsorption air hole 1, an external air hole 2 and an adsorption air duct 3. The adsorption air hole 1 and the external air hole 2 are communicated through the adsorption air duct 3. The external air hole 2 is used for communicating with an external vacuumizing equipment. The adsorption jig 100 is formed with an adsorption surface 41 and a detection hole 4 which is arranged in an up-down penetrating mode. The lens can be adsorbed on the adsorption surface 41 of the adsorption jig 100 through the adsorption air hole 1, and the lens is located at the lower end of the detection hole 4.

[0041] Specifically, the lens core adjusting device provided by the embodiment adsorbs and fixes the lens through the adsorption assembly. The external air hole 2 of the adsorption jig 100 is communicated with the vacuumizing equipment. When the adsorption surface 41 of the adsorption jig 100 approaches the lens, the vacuumizing equipment extracts the gas between the adsorption jig 100 and the lens through the adsorption air hole 1, so as to form a negative pressure space between the adsorption jig 100 and the lens, and then the lens is adsorbed and fixed. The detection hole 4 which is arranged in an up-down penetrating mode is arranged on the adsorption jig 100. The lens is adsorbed and fixed and located at the lower end of the detection hole 4, so as to ensure that the lens can be penetrated by the detection light. In summary, the adsorption assembly provided by the embodiment can stably fix the lens. When the adsorption jig 100 moves, the lens can move synchronously, so as to eliminate the movement error between the lens and the adsorption jig 100, improve the followability of the lens, accurately adjust the installation position between the lens and the lens barrel, and improve the imaging quality of the lens. In addition, the adsorption jig 100 is detachably installed on the pressing plate 30. When the type or size of the lens to be installed is switched, the corresponding size of the adsorption jig 100 can be replaced, so as to be adapted. The use flexibility is high.

[0042] Exemplarily, as shown in the figures, Figure 2 and Figure 3As shown in the drawings, the adsorption air hole 1 is arranged on the wall of the detection hole 4, the lower end of the adsorption air hole 1 protrudes from the lower surface of the adsorption assembly, the adsorption surface 41 is the lower end surface of the adsorption air hole 1, and the adsorption assembly further comprises a sealing lens 200 arranged at the upper end of the detection hole 4. When the adsorption surface 41 is pressed against the lens, a negative pressure space can be formed in the detection hole 4 after the external vacuum device is opened to exhaust air. The sealing lens 200 is arranged at the upper end of the detection hole 4, which can not only play a sealing role to form a negative pressure space in the detection hole 4, but also allow light for detecting lens imaging to penetrate, without affecting the detection result, and fully utilize the internal structure and space of the adsorption jig 100, which is a clever design.

[0043] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, the adsorption air hole 1, the external air hole 2 and the adsorption air duct 3 are each provided with at least two, one end of each adsorption air duct 3 is communicated with one adsorption air hole 1, and the other end is communicated with one external air hole 2. In this embodiment, the adsorption air hole 1, the external air hole 2 and the adsorption air duct 3 are each provided with two, two adsorption air holes 1 are symmetrically arranged on the wall of the detection hole 4, two external air holes 2 are symmetrically arranged on two side edges of the adsorption jig 100, and two adsorption air ducts 3 are symmetrically arranged about the detection hole 4, and each of the two adsorption air ducts 3 extends along a straight line to communicate the corresponding adsorption air hole 1 and external air hole 2. The arrangement of the adsorption air hole 1 and the external air hole 2 is reasonable, the air suction is uniform, and it is convenient to connect the air pipe for connecting the vacuum device. The path of the adsorption air duct 3 is short, and the response speed of air suction is improved.

[0044] As shown in the drawings, Figure 2 and Figure 3 As shown in the drawings, the detection hole 4 is arranged in the middle of the adsorption jig 100, and the adsorption jig 100 further comprises a plurality of light transmission holes 5, the plurality of light transmission holes 5 are distributed around the periphery of the detection hole 4, and the plurality of light transmission holes 5 are each provided with a waist-shaped hole structure. In this embodiment, four light transmission holes 5 are arranged around the periphery of the detection hole 4. Specifically, the lens and the lens barrel are bonded by adhesive, and during the centering process, the lens and the lens barrel are coated with adhesive that has not yet solidified. The light transmission hole 5 is arranged to allow ultraviolet light emitted by a UV lamp to pass through, so as to accelerate the solidification of the adhesive between the lens and the lens barrel after the position of the lens is adjusted in place, so that the lens and the lens barrel are fixed to each other immediately, avoiding errors caused by movement of the lens, and improving the accuracy of centering.

[0045] As shown in the drawings, the adsorption jig 100 is made of cast iron, stainless steel, copper alloy or other metal materials.

[0046] As shown in the drawings, the lifting slide 20 adopts a high-precision linear slide in the prior art, the specific structure and working principle of which are well known, and will not be described here again. The lifting slide 20 can drive the adsorption assembly to lift in a high-precision and high-stability state.

[0047] As shown in Figure 1 The lens core adjusting device further comprises a high-precision guide rail assembly, which comprises a lifting slide rail 81, a lifting slide block 82 and a lifting connecting plate 83. The lifting slide rail 81 extends in the vertical direction and is fixed to the mounting seat 10. The lifting slide block 82 is in sliding connection with the lifting slide rail 81. The lifting connecting plate 83 is fixed to the lifting slide block 82. The first end portion 301 of the pressing plate 30 is fixedly connected to the lifting connecting plate 83 through bolts. The high-precision guide rail assembly has high action precision, small sliding friction, excellent wear resistance and reliability, and can provide precise and reliable guidance for the lifting of the pressing plate 30 and the adsorption assembly.

[0048] As shown in Figure 1 The first end portion 301 and the second end portion 302 of the pressing plate 30 are both in the form of horizontal plates, and are connected by a plate-shaped structure arranged obliquely. From the first end portion 301 to the second end portion 302 of the pressing plate 30, the plate-shaped structure extends obliquely downward away from the lifting slide 20.

[0049] As shown in Figure 1 The second end portion 302 of the pressing plate 30 is provided with a clearance hole 303, which is in communication with the detection hole 4 and the light transmission holes 5 on the adsorption jig 100.

[0050] As shown in Figure 2 and Figure 3 The adsorption jig 100 is detachably connected to the second end portion 302 of the pressing plate 30 by means of bolts or clamping. In this embodiment, the adsorption jig 100 is detachably connected to the second end portion 302 of the pressing plate 30 by means of multiple bolts. The adsorption jig 100 is provided with multiple mounting holes 6. The bolts are screwed into the mounting holes 6 and are in threaded connection with the threaded holes on the second end portion 302.

[0051] As shown in Figure 1 The lens core adjusting device further comprises a first connecting plate 40 and a second connecting plate 50, which are both connected to the output end of the lifting slide 20. Specifically, the first connecting plate 40 is directly locked to the slide plate of the lifting slide 20 by means of bolts. The second connecting plate 50 is locked to the first connecting plate 40 by means of bolts. When the lifting slide 20 is driven upward, the first connecting plate 40 supports the first end portion 301 of the pressing plate 30 upward, thereby driving the pressing plate 30 and the adsorption assembly to be lifted upward together. When the lifting slide 20 is driven downward, the second connecting plate 50 can push the first end portion 301 downward, thereby driving the pressing plate 30 and the adsorption assembly to be pressed downward together.

[0052] As shown in Figure 1As shown, the first connecting plate 40 is provided with a first pressure sensor 61, which is arranged between the first connecting plate 40 and the lower surface of the lower pressing plate 30. When the output end of the lifting slide 20 moves upward, the first pressure sensor 61 can be pressed against the lower surface of the lower pressing plate 30, i.e. the first connecting plate 40 is pressed against the lower surface of the first end portion 301 of the lower pressing plate 30 through the first pressure sensor 61, and the first pressure sensor 61 can detect the lifting force output to the lower pressing plate 30.

[0053] As shown in the figure, Figure 1 As shown, the second connecting plate 50 is provided with a second pressure sensor 62, which is arranged between the second connecting plate 50 and the upper surface of the lower pressing plate 30. When the output end of the lifting slide 20 moves downward, the second pressure sensor 62 can be pressed against the upper surface of the lower pressing plate 30, i.e. the second connecting plate 50 is pressed against the upper surface of the first end portion 301 of the lower pressing plate 30 through the second pressure sensor 62, and the second pressure sensor 62 can detect the downward pressure output to the lower pressing plate 30 to detect the pressure of the adsorption jig 100 pressing against the lens and avoid the case that the pressure is too large to damage the lens or the adsorption jig 100 does not press against the lens.

[0054] As shown in the figure, Figure 1 As shown, the lens core adjusting device further comprises a floating connection assembly 70, which comprises a floating shaft and a floating spring. The lower end of the floating shaft is connected to the first end portion 301, and the upper end of the floating shaft is arranged in the second connecting plate 50 through a linear bearing. The floating spring is sleeved outside the floating shaft, and the two ends of the floating spring are respectively abutted or connected with the second connecting plate 50 and the lower pressing plate 30. When the second connecting plate 50 is pressed downward, the distance between the second connecting plate 50 and the lower pressing plate 30 gradually decreases, the floating spring is compressed, and the downward pressure provided by the second pressure sensor 62 to the lower pressing plate 30 gradually increases until the downward pressure increases to a preset range, and the lifting slide 20 stops the downward movement to realize the adjustment of the downward pressure.

[0055] As shown in the figure, Figure 1 As shown, the second connecting plate 50 is provided with a height adjusting hole 501, and the first connecting plate 40 is correspondingly provided with a mounting threaded hole. The height adjusting hole 501 is arranged in a waist-shaped hole structure extending in the height direction, and the second connecting plate 50 and the first connecting plate 40 are fixedly connected through a bolt arranged in the height adjusting hole 501 and screw-connected to the mounting threaded hole. By adjusting the relative height position of the height adjusting hole 501 and the mounting threaded hole, the fixed height of the second connecting plate 50 relative to the first connecting plate 40 can be adjusted, so as to adjust the pre-pressing amount of the floating spring and the size of the floating pressure. In this embodiment, two height adjusting holes 501 are arranged on the second connecting plate 50.

[0056] As an example, as shown in Figure 1 The floating connection assembly 70 is symmetrically provided with two groups, as shown.

[0057] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An adsorption assembly, characterized by, The adsorption tool (100) is provided with an adsorption air hole (1), an external air hole (2) and an adsorption air duct (3), the adsorption air hole (1) and the external air hole (2) are communicated through the adsorption air duct (3), the external air hole (2) is used for communicating with an external vacuum equipment, an adsorption surface (41) and a detection hole (4) are formed in the adsorption tool (100), the adsorption tool (100) can adsorb a lens on the adsorption surface (41) through the adsorption air hole (1), and the lens is located at the lower end of the detection hole (4).

2. The adsorption assembly of claim 1, wherein, The adsorption air hole (1) is arranged on the hole wall of the detection hole (4), the lower end of the adsorption air hole (1) protrudes from the lower surface of the adsorption assembly, the adsorption surface (41) is the lower end surface of the adsorption air hole (1), the adsorption assembly further comprises a sealing lens (200), the sealing lens (200) is sealingly arranged at the upper end of the detection hole (4), when the adsorption surface (41) presses against the lens, a negative pressure space can be formed in the detection hole (4).

3. The adsorption assembly of claim 1, wherein, The adsorption air hole (1), the external air hole (2) and the adsorption air duct (3) are each provided with at least two, one end of each adsorption air duct (3) is communicated with one adsorption air hole (1), and the other end is communicated with one external air hole (2).

4. The adsorption assembly of claim 1, wherein, The detection hole (4) is arranged at the middle of the adsorption tool (100), a plurality of light transmission holes (5) are further arranged on the adsorption tool (100), the plurality of light transmission holes (5) are distributed around the periphery of the detection hole (4), and the plurality of light transmission holes (5) are all provided with a waist-shaped hole structure.

5. The adsorption assembly according to any one of claims 1 to 4, characterized in that The adsorption tool (100) is made of a metal material.

6. A lens centering device characterized by, It comprises: a mounting seat (10); a lifting slide table (20) mounted on the mounting seat (10), the output end of the lifting slide table (20) can be lifted in the vertical direction; a lower pressing plate (30) slidingly arranged on the mounting seat (10) in the vertical direction, the first end (301) of the lower pressing plate (30) is in transmission connection with the output end of the lifting slide table (20); and the adsorption tool (100) of any one of claims 1-5 can be detachably mounted on the second end (302) of the lower pressing plate (30).

7. The lens centering device of claim 6, wherein, The lens core adjusting device further comprises a first connecting plate (40) and a second connecting plate (50), the first connecting plate (40) and the second connecting plate (50) are both connected to the output end of the lifting slide table (20); the first connecting plate (40) can support the first end (301) upwardly; the second connecting plate (50) can push the first end (301) downwardly.

8. The lens centering device of claim 7, wherein, A first pressure sensor (61) is mounted on the first connecting plate (40), and the first pressure sensor (61) is arranged between the first connecting plate (40) and the lower surface of the lower pressing plate (30); when the output end of the lifting slide table (20) moves upwardly, the first pressure sensor (61) can press against the lower surface of the lower pressing plate (30).

9. The lens centering device of claim 7, wherein, A second pressure sensor (62) is mounted on the second connecting plate (50) and arranged between the second connecting plate (50) and the upper surface of the lower pressing plate (30); When the output end of the lifting slide (20) moves downward, the second pressure sensor (62) can press against the upper surface of the lower pressing plate (30).

10. The lens centering device of claim 9, wherein, Further comprising a floating connecting assembly (70) which comprises a floating shaft and a floating spring, the lower end of the floating shaft is connected to the first end (301), the upper end of the floating shaft is arranged through a linear bearing in the second connecting plate (50), the floating spring is sleeved outside the floating shaft, and the two ends of the floating spring are respectively abutted or connected with the second connecting plate (50) and the lower pressing plate (30).

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