A lens imaging detection device and its usage method

Abstract

The present invention discloses a lens imaging detection device and a method for using the same. The lens imaging detection device includes a fixing frame, which is provided with an installation hole for clamping with a lens, and the contact surface with a preset installation ring of the lens is an installation surface; a plurality of pressing components, each pressing component includes a driving member and a pressing claw, the output shaft of the driving member is connected to the pressing claw and can drive the pressing claw to rotate, and the pressing claw can contact the installation ring and together with the vertical plate clamp the installation ring; a switch, which is electrically connected to each driving member and is used to control the opening and closing of each driving member; an imaging component, which includes an imaging chip, the imaging chip is fixedly connected to the fixing frame, and the central axes of the lens, the installation hole and the imaging chip all coincide with each other. The present invention quickly clamps the lens through the pressing component and is not limited to lenses of specific models, so as to be able to complete the clamping and imaging detection work of different types of lenses. The present invention relates to the technical field of lenses.

Description

Technical Field

[0001] The present invention relates to a lens imaging detection device and a method for using the same in the technical field of lenses. Background Art

[0002] A lens is a product with high requirements for production processes and production precision. Generally, after the assembly of each component of the lens is completed, the lens needs to be subjected to imaging detection to inspect its imaging quality. Generally, the lens is connected to an imaging detector through a matching fixture, and after the imaging detector is turned on, the imaging quality of the lens can be detected.

[0003] In order to ensure the stable installation of the lens, traditional lens fixtures generally fix the lens by means of screwing or manually pressing with a clamping jaw, and the structure of the fixture is also adaptively designed according to the shape of the lens to ensure that the lens can be stably installed in the fixture without loosening.

[0004] However, traditional lens fixtures generally only target fixed lens models. Different models of lenses require different types of fixtures. This is suitable for the application scenario of imaging detection of a large number of the same type of lenses. However, for lenses produced in small batches or customized lenses, using a fixed lens fixture has a high production cost and is inconvenient to replace, and the replacement process also consumes working hours, reducing the detection efficiency. Summary of the Invention

[0005] An object of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a lens imaging detection device and a method for using the same, which can clamp different types of lenses and complete the lens imaging detection work.

[0006] According to a first aspect embodiment of the present invention, there is provided a lens imaging detection device, including:

[0007] A fixing frame, which includes a vertical plate and a bottom plate. The vertical plate and the bottom plate are connected by bolts and jointly form an L-shaped structure. The vertical plate is provided with mounting holes for clamping the lens, and the contact surface between the vertical plate and the preset mounting ring of the lens is the mounting surface;

[0008] A plurality of pressing components, each pressing component includes a driving member and a pressing claw. The output shaft of the driving member is connected to the pressing claw and can drive the pressing claw to rotate. The pressing claw can contact the mounting ring and jointly clamp the mounting ring with the vertical plate;

[0009] A switch, which is electrically connected to each driving member and is used to control the opening and closing of each driving member;

[0010] An imaging component, which includes an imaging chip. The imaging chip is fixedly connected to the bottom plate, and the central axes of the lens, the mounting hole, and the imaging chip all coincide with each other.

[0011] According to an embodiment of the first aspect of the present invention, further, the lens imaging detection device further includes a centering ring. One side of the centering ring can be attached to the mounting surface. The other side of the centering ring is provided with a groove that can be adaptively installed with the mounting ring of the lens. The centering ring can be clamped by the pressing claws together with the mounting ring of the lens. A plurality of centering holes are circumferentially and arrayedly distributed on the side surface of the centering ring. The centering holes are used for a screwdriver to pass through and center the lens.

[0012] According to an embodiment of the first aspect of the present invention, further, the number of the centering holes is four.

[0013] According to an embodiment of the first aspect of the present invention, further, a positioning pin is installed on the vertical plate. Pin holes are provided on both the mounting ring of the lens and the centering ring. The positioning pin can extend into the pin holes to fix the position of the mounting ring of the lens or the centering ring.

[0014] According to an embodiment of the first aspect of the present invention, further, the fixing frame further includes an L-shaped connecting piece. The vertical plate and the bottom plate are respectively connected to two sides of the L-shaped connecting piece.

[0015] According to an embodiment of the first aspect of the present invention, further, the pressing assembly further includes a positioning post. The positioning post is installed on the vertical plate and is used to limit the rotation angle of the pressing claws.

[0016] According to an embodiment of the first aspect of the present invention, further, the number of the pressing assemblies is four.

[0017] According to an embodiment of the first aspect of the present invention, further, the driving member is specifically a rotary cylinder, and the switch is pneumatically connected to the rotary cylinder.

[0018] According to an embodiment of the first aspect of the present invention, further, the imaging assembly further includes a sliding table. The sliding table is slidably connected to the bottom plate and the sliding direction is parallel to the central axis direction of the lens. The imaging chip is installed on the sliding table. The sliding table is provided with a fine adjustment knob. By screwing the fine adjustment knob, the sliding table can be driven to move.

[0019] According to an embodiment of the second aspect of the present invention, a method for using a lens imaging detection device is provided, including:

[0020] Install the 6D autocollimator on the bottom plate so that the 6D autocollimator faces the mounting hole and the imaging chip;

[0021] Attach a plane mirror to the mounting surface, turn on the 6D autocollimator and adjust the 6D autocollimator so that the light crosshair reflected from the plane mirror in the 6D autocollimator coincides with the cross scale center line to complete the calibration of the optical path.

[0022] Remove the plane mirror on the mounting surface, and adjust the position of the imaging chip so that the light crosshair reflected from the imaging chip in the 6D autocollimator differs from the center line of the cross scale by less than 1 / 4 grid, so that the parallelism between the mounting surface and the imaging chip is below 15″, and complete the parallelism calibration of the mounting surface and the imaging chip;

[0023] Turn off the 6D autocollimator and remove it;

[0024] Place the lens in the mounting hole;

[0025] Turn on the switch, and multiple pressing components are activated. The driving member drives the pressing claws to rotate and clamp the lens;

[0026] Conduct imaging detection of the lens;

[0027] After the imaging detection of the lens is completed, turn off the switch. The driving member drives the pressing claws to rotate and release the clamping of the lens, remove the lens and prepare for the imaging detection of the next lens.

[0028] The beneficial effects of the embodiments of the present invention at least include: The present invention quickly clamps the lens through the pressing component, and is not limited to lenses of specific models, so that the clamping and imaging detection of different types of lenses can be completed. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0030] Figure 1 is the structural diagram of the lens imaging detection device according to the first aspect embodiment of the present invention;

[0031] Figure 2 is the structural diagram of the lens imaging detection device after installing the alignment ring according to the first aspect embodiment of the present invention;

[0032] Figure 3 is Figure 2 the exploded view of.

[0033] Reference numerals: 100 - fixing bracket, 110 - vertical plate, 111 - mounting hole, 112 - mounting surface, 113 - positioning pin, 120 - bottom plate, 130 - L-shaped connecting member, 200 - pressing assembly, 210 - driving member, 220 - pressing claw, 230 - positioning post, 300 - switch, 400 - imaging assembly, 410 - imaging chip, 420 - sliding table, 421 - fine adjustment knob, 500 - centering ring, 510 - groove, 520 - centering hole, 530 - pin hole, 600 - lens, 610 - mounting ring. Detailed implementation manners

[0034] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0035] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0036] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two. Understand greater than, less than, exceeding, etc. as not including the present number, and understand above, below, within, etc. as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] An embodiment of the first aspect of the present invention provides a lens imaging detection device, which can realize the rapid clamping of the lens through the pressing assembly. It does not limit the specific model of the lens and can clamp the mounting ring of the lens together with the fixing bracket to fix the lens. Moreover, the rotational pressing of the pressing claw is driven by the driving member, which reduces the labor burden of manual fixing and improves the efficiency of lens clamping.

[0039] The second aspect of the embodiments of the present invention provides a method for using the lens imaging detection device, and introduces the operation processes of the optical path calibration and imaging detection of the lens imaging detection device.

[0040] The attached drawings of the specification Figure 1 Show the structural diagram of the lens imaging detection device. The main component of the lens imaging detection device is the fixing frame 100, which includes a vertical plate 110, a bottom plate 120 and an L-shaped connecting piece 130. The vertical plate 110 and the bottom plate 120 together form an L-shaped structure. The L-shaped connecting piece 130 is installed at the corner of the vertical plate 110 and the bottom plate 120. The three are connected to each other by bolts to form an integral body, providing a stable supporting effect for other components.

[0041] One side of the vertical plate 110 is an installation surface 112 for installing the lens 600, and the installation ring 610 on the lens 600 is attached to the installation surface 112. The pressing component 200 is installed on the vertical plate 110, and the number of the pressing components 200 is multiple, and can perform multi-point fixation on the lens 600. The pressing component 200 includes a driving member 210, a pressing claw 220 and a positioning column 230. The driving member 210 is installed on the other side of the vertical plate 110, and its output shaft passes through a preset through hole on the vertical plate 110 and exposes from the installation surface 112. The pressing claw 220 is connected to the output shaft of the driving member 210 and can be driven by it to rotate. The positioning column 230 is installed on the vertical plate 110 to limit the rotation of the pressing claw 220.

[0042] The switch 300 is installed on the fixing frame 100, and is electrically connected to each driving member 210. In some embodiments, the driving member 210 is a motor, which is electrically connected to the switch 300 and powered by an external power supply. When the switch 300 is turned on or off, the motor can move. In other embodiments, the driving member 210 is a rotary cylinder, which is pneumatically connected to the switch 300 and supplied with gas by an external gas source. When the switch 300 is turned on or off, the rotary cylinder moves under gas pressure, so as to drive the pressing claw 220.

[0043] When the lens 600 is installed in place, the switch is closed, and the driving member 210 drives the pressing claw 220 to rotate and abut against the installation ring 610 on the lens 600. The pressing claw 220 and the vertical plate 110 respectively clamp both sides of the installation ring 610, so as to realize the stable clamping of the lens 600.

[0044] The attached drawings of the specification Figure 2The structure diagram of the present lens imaging detection device after installing the centering ring 500 is shown. When it is found that there is an error in the internal optical chip of the lens 600 and angle adjustment is required, the centering ring 500 and the mounting ring 610 of the lens 600 are fixed to each other and then installed together on the vertical plate 110, and the pressing claw 220 is replaced so that the lens 600 can be fixed together with the centering ring 500 when the pressing claw 220 rotates and presses. It should be noted that a plurality of centering holes 520 are preset on the centering ring 500, and each centering hole 520 needs to correspond to the centering groove preset on the lens 600, so that the worker can operate a screwdriver or other adjustment tools to pass through the centering hole 520 and enter the inside of the lens 600 for centering.

[0045] Instruction manual attachment Figure 3 The explosion diagram of the present lens imaging detection device is shown, which can clearly show the connection relationship of each component. The mounting hole 111 preset on the vertical plate 110 can allow the lens 600 part to pass through, and also serves as an indication for the worker when installing the lens 600. Moreover, a plurality of positioning pins 113 are provided around the mounting hole 111, which protrude outwards. Corresponding pin holes 530 are provided on both the mounting ring 610 of the lens 600 and the centering ring 500, and the positioning pins 113 can extend into the pin holes 530 to achieve positioning. A groove 510 is provided on one side of the centering ring 500 where it is docked with the lens 600, and its shape is adapted to the outer shape of the mounting ring 610 of the lens 600, so that the mounting ring 610 can be stably fixed after being placed in the groove 510.

[0046] An imaging component 400 for imaging detection is also installed on the fixing frame 100, which includes an imaging chip 410 and a sliding table 420. The sliding table 420 is slidably connected to the bottom plate 120, and its sliding direction is parallel to the central axis direction of the lens 600. The imaging chip 410 is installed on the sliding table 420, so that the distance between the imaging chip 410 and the lens 600 can be adjusted by adjusting the position of the sliding table 420 for lenses with different focal lengths. For the convenience of adjustment, a fine adjustment knob 421 is provided on the sliding table 420, and the position of the sliding table 420 can be finely adjusted by screwing the fine adjustment knob 421.

[0047] Refer to Figures 1 to 3, the lens imaging detection device in the first aspect embodiment of the present invention includes a fixing frame 100, a plurality of pressing components 200, a switch 300, and an imaging component 400. The fixing frame 100 is the main structure of this lens imaging detection device, which includes a vertical plate 110, a bottom plate 120, and an L-shaped connecting piece 130. The vertical plate 110 and the bottom plate 120 are connected by bolts and form an L-shaped structure. The L-shaped connecting piece 130 is installed at the corner of the two, and the vertical plate 110 and the bottom plate 120 are respectively installed on both sides of the L-shaped connecting piece 130 to enhance the overall structural strength. An installation hole 111 for clamping with the lens 600 is provided on the vertical plate 110, and the contact surface between the vertical plate 110 and the mounting ring 610 on the lens 600 is the mounting surface 112.

[0048] The number of the pressing components 200 is specifically four, which includes a driving member 210 and a pressing claw 220. The output shaft of the driving member 210 is connected to the pressing claw 220 and can drive the pressing claw 220 to rotate. The pressing claw 220 can rotate to contact the mounting ring 610 and clamp the mounting ring 610 together with the vertical plate 110.

[0049] The switch 300 is connected to each driving member 210 by a circuit for controlling the opening and closing of each driving member 210. In some embodiments, the driving member 210 is a motor, and the switch 300 is electrically connected to each driving member 210 and powered by an external power supply, so as to realize the control of each driving member 210 by the switch 300. In this embodiment, the driving member 210 is a rotary cylinder, and the switch 300 is pneumatically connected to each driving member 210 and supplied with air by an external air source, which can also realize the control of each driving member 210 by the switch 300.

[0050] The imaging component 400 is used for imaging detection of the lens 600, which includes an imaging chip 410 and a sliding table 420. The imaging chip 410 is slidably connected to the bottom plate 120 through the sliding table 420, and the central axes of the lens 600, the installation hole 111, and the imaging chip 410 coincide, so that the three are on the same straight line, and the moving direction of the sliding table 420 is also parallel to the straight line direction. A fine adjustment knob 421 is also provided on the sliding table 420, and the position of the sliding table 420 can be finely adjusted when it is turned.

[0051] Further, this lens imaging detection device further includes an alignment ring 500. One side of it can be attached to the mounting surface 112, and the other side is provided with a groove 510 adapted to the mounting ring 610 of the lens 600, so as to play a role in limiting the lens 600. When the pressing claw 220 clamps, the lens 600 together with the alignment ring 500 can be fixed. A plurality of alignment holes 520, specifically four, are circumferentially and arrayedly distributed on the side surface of the alignment ring 500, corresponding to the preset alignment grooves on the lens 600 respectively, so that workers can use a screwdriver or other alignment tools to extend into the lens 600 for alignment.

[0052] Further, a positioning pin 113 is installed on the vertical plate 110, specifically arranged around the mounting hole 111 and protruding outward. Corresponding pin holes 530 are provided on the mounting ring 610 of the lens 600 and the centering ring 500, which can guide workers to install correctly and play an auxiliary limiting role for the lens 600 or the centering ring 500.

[0053] The second aspect embodiment of the present invention provides a method for using a lens imaging detection device, including the following steps:

[0054] S1. First, calibrate the parallelism between the mounting surface 112 and the imaging chip 410. Install the 6D autocollimator on the bottom plate 120 so that the 6D autocollimator faces the mounting hole 111 and the imaging chip 410;

[0055] S2. Attach a plane mirror to the mounting surface 112, turn on the 6D autocollimator and adjust the 6D autocollimator so that the light crosshair reflected from the plane mirror in the 6D autocollimator coincides with the cross-scale center line inside it, completing the calibration of the optical path;

[0056] S3. Remove the plane mirror on the mounting surface 112. At this time, the light emitted from the 6D autocollimator can irradiate the imaging chip 410. Adjust the position of the imaging chip 410 so that the light crosshair reflected from the imaging chip 410 in the 6D autocollimator is within 1 / 4 grid difference from the cross-scale center line inside it, so that the parallelism between the mounting surface 112 and the imaging chip 410 is below 15″, completing the calibration of the parallelism between the mounting surface 112 and the imaging chip 410;

[0057] S4. Turn off the 6D autocollimator and remove it, and prepare to start the imaging detection of the lens 600;

[0058] S5. Place the lens 600 in the mounting hole 111;

[0059] S6. Turn on the switch 300, and multiple pressing components 200 are activated. The driving member 210 drives the pressing claw 220 to rotate and clamp the lens 600;

[0060] S7. Perform the imaging detection of the lens 600;

[0061] S8. When the imaging detection of the lens 600 is completed, turn off the switch 300. The driving member 210 drives the pressing claw 220 to rotate and release the clamping of the lens 600. Remove the lens 600 and prepare to perform the imaging detection of the next lens 600.

[0062] In this application, the 6D autocollimator is a precision measuring instrument. It emits light internally, and by the reflection of the light by the surface to be measured, information such as the differences, changes, and deviations of the microscopic edges of an object can be read, and deviations in aspects such as straightness, perpendicularity, parallelism, and flatness can be measured in various ways. This is prior art and will not be elaborated here.

[0063] The above has specifically described the preferred embodiments of the present invention. However, the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A lens imaging detection device, characterized in that, it includes: A fixing frame, which includes a vertical plate and a bottom plate. The vertical plate and the bottom plate are connected by bolts and jointly form an L-shaped structure. The vertical plate is provided with mounting holes for clamping with the lens, and the contact surface between the vertical plate and the preset mounting ring of the lens is the mounting surface; A plurality of pressing components, the pressing component includes a driving member and a pressing claw. The output shaft of the driving member is connected to the pressing claw and can drive the pressing claw to rotate. The pressing claw can contact the mounting ring and, together with the vertical plate, clamp the mounting ring; A switch, which is electrically connected to each of the driving members and is used to control the opening and closing of each of the driving members; An imaging component, which includes an imaging chip. The imaging chip is fixedly connected to the bottom plate, and the central axes of the lens, the mounting hole, and the imaging chip all coincide with each other; Among them, the lens imaging detection device further includes an alignment ring. One side of the alignment ring can be attached to the mounting surface, and the other side of the alignment ring is provided with a groove that can be adaptively installed with the mounting ring of the lens. The alignment ring can be clamped by the pressing claw together with the mounting ring of the lens. A plurality of alignment holes are circumferentially arranged on the side surface of the alignment ring, and the alignment holes are used for a screwdriver to pass through and align the lens; The imaging component further includes a sliding table. The sliding table is slidably connected to the bottom plate and the sliding direction is parallel to the central axis direction of the lens. The imaging chip is installed on the sliding table, and the sliding table is provided with a fine adjustment knob. By screwing the fine adjustment knob, the sliding table can be driven to move.

2. The lens imaging detection device according to claim 1, characterized in that: The number of the alignment holes is four.

3. The lens imaging detection device according to claim 1, characterized in that: A positioning pin is installed on the vertical plate, and pin holes are provided on both the mounting ring of the lens and the alignment ring. The positioning pin can extend into the pin hole to fix the position of the mounting ring of the lens or the alignment ring.

4. The lens imaging detection device according to claim 1, characterized in that: The fixing frame further includes an L-shaped connecting piece, and the vertical plate and the bottom plate are respectively connected to both sides of the L-shaped connecting piece.

5. The lens imaging detection device according to claim 1, characterized in that: The pressing component further includes a positioning column, and the positioning column is installed on the vertical plate and is used to limit the rotation angle of the pressing claw.

6. The lens imaging detection device according to claim 1, characterized in that: The number of the pressing components is four.

7. The lens imaging detection device according to claim 1, characterized in that: The driving member is specifically a rotary cylinder, and the switch is pneumatically connected to the rotary cylinder.

8. A method of using the lens imaging detection device according to any one of claims 1 to 7, characterized in that, it includes: Install the 6D autocollimator on the bottom plate so that the 6D autocollimator faces the mounting hole and the imaging chip; Attach a plane mirror to the installation surface, turn on the 6D autocollimator and adjust the 6D autocollimator so that the light crosshair reflected from the plane mirror in the 6D autocollimator coincides with the center line of the cross scale, completing the calibration of the optical path; Remove the plane mirror on the installation surface, adjust the position of the imaging chip so that the light crosshair reflected from the imaging chip in the 6D autocollimator is within 1 / 4 grid difference from the center line of the cross scale, thereby making the parallelism between the installation surface and the imaging chip below 15″, completing the parallelism calibration between the installation surface and the imaging chip; Turn off the 6D autocollimator and remove it; Place the lens in the installation hole; Turn on the switch, multiple pressing components are activated, and the driving member drives the pressing claws to rotate and clamp the lens; Perform imaging detection of the lens; When the imaging detection of the lens is completed, turn off the switch, the driving member drives the pressing claws to rotate and release the clamping of the lens, remove the lens and prepare for the imaging detection of the next lens.

Images