An apparatus for detecting a lens

Abstract

The application discloses a lens detection device, which comprises a detection head vertically downwardly facing a to-be-detected lens, the to-be-detected lens is horizontally supported in a lens jig with an axial hollow, the lens jig is clamped in a fixed seat with an axial hollow, the fixed seat is installed on a fixed platform, the inside of the fixed platform is formed with a horizontal light path projection channel, one end of the light path projection channel is provided with a projection light pipe, and the other end is provided with a reflecting element, the reflecting element vertically upwardly reflects the horizontal light path projected by the projection light pipe, and sequentially passes through the fixed seat, the lens jig and the to-be-detected lens, and is received by the detection head to realize detection. The utility model discloses the structure when detecting the lens, is suitable for reflecting the lens simultaneously, and applies multiple displacement platforms to the moving structure of the detection device, and realizes relatively precise lens detection.

Description

Technical Field

[0001] This application relates to lens testing, and more particularly to a lens testing device. Background Technology

[0002] Current lens inspection generally involves a detection head emitting light, which is then reflected back to the detection head by a reflecting lens to perform the inspection. For example, this can be used to detect the eccentricity of a reflecting lens. However, when the lens is a lens, it is generally not possible to detect it by emitting light through the detection head.

[0003] In addition, when existing precision instruments require displacement adjustment, they are generally installed on a displacement platform. The existing displacement platform is generally set up with two plates connected by a track. A compression spring or torsion spring is usually set between the two plates to achieve reset. One of the two plates is usually a fixed plate and the other is a sliding plate. When adjustment is required, the sliding plate is usually pushed away by a knob on one side. When the knob is turned in the opposite direction, the torsion spring or compression spring will reset the sliding plate, thereby achieving adjustment. Utility Model Content

[0004] The purpose of this invention is to provide a lens detection device, which is designed with a structure for detecting lenses and is also applicable to reflective lenses. Multiple displacement platforms are applied to the moving structure of the detection device to achieve more precise lens detection.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] This application discloses a lens testing device, including a testing head, which is vertically downward facing the lens to be tested. The lens to be tested is horizontally supported by a lens fixture with a hollow core. The lens fixture is clamped in a fixed base with a hollow core. The fixed base is mounted on a fixed platform. A horizontal light path projection channel is formed inside the fixed platform. A projection tube is provided at one end of the light path projection channel, and a reflective element is provided at the other end. The reflective element reflects the horizontal light path projected by the projection tube vertically upward, and the light passes through the fixed base, the lens fixture, and the lens to be tested in sequence, and is received and detected by the testing head.

[0007] Preferably, in the above-mentioned lens detection device, the detection head emits a vertically downward beam and projects it onto the lens to be tested.

[0008] Preferably, in the above-mentioned lens detection device, the reflective element is mounted on a mounting plate, and the mounting plate is adjustablely mounted on a mounting base by bolts arranged in a triangular pattern.

[0009] Preferably, in the above-mentioned lens testing device, the side of the fixing seat is formed with an adsorption hole for drawing a vacuum inside the fixing seat and adsorbing the lens to be tested onto the lens fixture.

[0010] Preferably, in the above-mentioned lens testing device, a lens driving assembly is provided on one side of the lens to be tested. The lens driving assembly includes a first belt that drives the lens to be tested to rotate horizontally. The first belt is disposed between one of the first single rotating wheel and the double rotating wheel. A second belt is disposed between the other rotating wheel of the double rotating wheel and the second single rotating wheel. A drive motor drives the second single rotating wheel.

[0011] Preferably, in the above-mentioned lens detection device, the lens driving assembly is mounted on the fourth vertical displacement platform to achieve height displacement adjustment; the fourth vertical displacement platform is mounted on the horizontal slide rail to achieve horizontal displacement adjustment.

[0012] Preferably, in the above-mentioned lens testing device, the lens to be tested includes different sizes, and the lens fixture that carries the lens to be tested is formed with different sizes to match, and the bottom of the lens fixture of different sizes is engaged with the fixing seat.

[0013] Preferably, in the above-mentioned lens testing device, a lateral limiting fixture is provided on one side of the lens to be tested. The lateral limiting fixture has a V-shaped clamping opening at one end that contacts the lens to be tested, and an adjusting groove at the other end. The lateral limiting fixture is slidably mounted on a fixture mounting base below and also includes a locking screw. The locking screw is inserted into the adjusting groove to lock the lateral limiting fixture and the fixture mounting base.

[0014] Preferably, in the above-mentioned lens testing device, the fixture mounting base is mounted on a first vertical displacement platform, the first vertical displacement platform is mounted on a first horizontal displacement platform, the first horizontal displacement platform is mounted on a second vertical displacement platform, and the second vertical displacement platform is fixedly mounted on the fixed platform through multiple rows of parallel fixing holes.

[0015] Preferably, in the above-mentioned lens detection device, the detection head is mounted on the clamping seat, the clamping seat is mounted on the third vertical displacement platform, the third vertical displacement platform is mounted on the adapter plate, the adapter plate is mounted on the lead screw connector, the lead screw connector is fixed to the lead screw, and the lead screw is driven by a motor.

[0016] Compared with existing technologies, the advantage of this technical solution is that it enables high-efficiency and high-precision measurement of lenses of various specifications, significantly improving the efficiency and accuracy of lens measurement work. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 The diagram shown is a schematic diagram of the lens detection device in an embodiment of this utility model;

[0019] Figure 2 As shown Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 The image shown is an enlarged view of the lens driving assembly in an embodiment of this utility model;

[0021] Figure 4 As shown Figure 3 Enlarged view at point B in the middle;

[0022] Figure 5 The image shown is an enlarged view of the reflective element in an embodiment of this utility model;

[0023] Figure 6 The image shown is an enlarged view of the lateral limiting fixture in an embodiment of this utility model;

[0024] Figure 7 The image shown is a cross-sectional view of the lens detection device in an embodiment of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Combination Figure 1-7As shown, the lens detection device 100 includes a detection head 101, which is vertically downward facing the lens 102 to be tested. The lens 102 to be tested is horizontally supported by a lens fixture 103 with a hollow shaft. The lens fixture 103 is locked in a fixed seat 104 with a hollow shaft. The fixed seat 104 is mounted on a fixed platform 105. A horizontal light path projection channel 106 is formed inside the fixed platform 105. One end of the light path projection channel 106 is provided with a projection light tube 107, and the other end is provided with a reflective element 108. The reflective element 108 reflects the horizontal light path projected by the projection light tube 107 vertically upward, and the light passes through the fixed seat 104, the lens fixture 103, and the lens 102 to be tested in sequence, and is received by the detection head 101 for detection.

[0027] In this embodiment, a horizontal light path is projected through a projection light tube, and after being reflected vertically upward by a reflective element (which can be a plane mirror) at a set angle, the light passes through the lens to be tested (which is generally a lens in this case). At this point, the geometric parameters of the lens, such as eccentricity and focal length, can be detected, thus achieving the detection.

[0028] Furthermore, the detection head 101 emits a vertically downward beam and projects it onto the lens 102 under test.

[0029] In this embodiment, the device also has the function of detecting a typical reflective lens. When the lens is a reflective lens rather than a traditional lens, light needs to be emitted from the detection head and reflected by the lens to detect the corresponding parameters of the lens.

[0030] Furthermore, the reflective element 108 is mounted on the mounting plate 109, which is adjustablely mounted on the mounting base 110 by bolts arranged in a triangular pattern.

[0031] In this embodiment, since the horizontal light path needs to be reflected vertically upwards, the reflective element needs to be installed in a specific position and needs to have a certain fine-tuning function to prevent manufacturing errors from causing ineffective reflection.

[0032] Furthermore, the side of the fixing seat 104 is formed with an adsorption hole 111, which is used to draw a vacuum inside the fixing seat 104 and to adsorb the lens to be tested 102 onto the lens fixture 103.

[0033] In this embodiment, since the lens needs to be rotated when testing it, an adsorption function is designed to keep the lens in the correct position while it is rotating, thus maintaining its stability.

[0034] Furthermore, a lens driving assembly is provided on one side of the lens under test 102. The lens driving assembly includes a first belt 112 that drives the lens under test 102 to rotate horizontally. The first belt 112 is disposed between one of the first single rotating wheel 113 and the double rotating wheel 114. A second belt 116 is disposed between the other rotating wheel of the double rotating wheel 114 and the second single rotating wheel 115. A drive motor drives the second single rotating wheel 115.

[0035] In this embodiment, the rotation of the lens is driven by a belt. Since it is necessary to effectively drive the lens by the elasticity and friction of the belt, a belt between two wheels is required. Therefore, three wheels are designed. One active wheel drives one of the double wheels, and the belt between the other double wheel and the other single wheel drives the lens to rotate.

[0036] Furthermore, the lens drive assembly is installed on the fourth vertical displacement platform 117 to achieve height displacement adjustment; the fourth vertical displacement platform 117 is installed on the horizontal slide rail 118 to achieve horizontal displacement adjustment.

[0037] In this embodiment, the horizontal slide rail is first adjusted to bring the first belt close to the lens. Then, the height is adjusted by the fourth vertical displacement platform so that the first belt is exactly on one side of the lens to be tested. Then, the horizontal slide rail is moved to make the first belt drive the lens to rotate.

[0038] Furthermore, the lens to be tested 102 includes different sizes and specifications, and the lens fixture 103 that carries the lens to be tested 102 is formed with different sizes and specifications to match. The bottom of the lens fixture 103 of different sizes is engaged with the fixing seat 104.

[0039] In this embodiment, the device is designed with replaceable lens fixtures to adapt to the detection of different lenses. Different lens fixtures support the lenses through different sized structures, while the bottom of the lens fixture remains unchanged and is always engaged with the fixed seat. In this way, only the lens fixture needs to be adjusted when detecting different lenses.

[0040] Furthermore, a lateral limiting fixture 119 is provided on one side of the lens 102 to be tested. The end of the lateral limiting fixture 119 that contacts the lens 102 to be tested forms a V-shaped clamping opening 120, and the other end forms an adjusting groove 121. The lower part of the lateral limiting fixture 119 is slidably mounted on the fixture mounting base 122. It also includes a locking screw (not shown in the figure). The locking screw is inserted into the adjusting groove 121 to lock the lateral limiting fixture 119 and the fixture mounting base 122.

[0041] In this embodiment, when the lens under test rotates, one side is driven by a belt and the other side is clamped by a V-shaped clamping port to further stabilize it and prevent it from shaking. It can also help the lens to be concentric with the testing device. During operation, the lateral limiting fixture that drives the V-shaped clamping port is first brought close to the lens under test, and then locked by a locking screw.

[0042] Furthermore, the fixture mounting base 122 is mounted on the first vertical displacement platform 123, the first vertical displacement platform 123 is mounted on the first horizontal displacement platform 124, the first horizontal displacement platform 124 is mounted on the second vertical displacement platform 125, and the second vertical displacement platform 125 is fixedly mounted on the fixed platform 105 through multiple rows of fixing holes 126.

[0043] In this embodiment, after the locking screw is locked, the position of the limit is finely adjusted by adjusting two vertical displacement platforms and one horizontal displacement platform. Here, the first vertical displacement platform is for coarse adjustment, while the first horizontal displacement platform and the second vertical displacement platform are for fine adjustment, ultimately adjusting the height of the clamping opening and the horizontal distance of the fit.

[0044] Furthermore, the detection head 101 is mounted on the clamping seat 127, the clamping seat 127 is mounted on the third vertical displacement platform 128, the third vertical displacement platform 128 is mounted on the adapter plate 129, the adapter plate 129 is mounted on the lead screw connector 130, the lead screw connector 130 is fixed to the lead screw 131, and the lead screw 131 is driven by a motor.

[0045] In this embodiment, the vertical position of the detection head is finely adjusted by the third vertical displacement platform, and the automatic adjustment function can be designed through the motor and the lead screw to automatically achieve the vertical position.

[0046] This technical solution enables convenient installation and stable clamping of lenses through the installation components, and achieves dual-optical-path detection. The limiting components and lens driving components limit and rotate the lens, while adapting to lenses of different specifications. The detection device quickly and accurately focuses and images through the detection components, which greatly improves the accuracy, efficiency and adaptability of the lens detection device.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A lens testing device, comprising a testing head, characterized in that, The detection head is vertically downward facing the lens to be tested. The lens to be tested is horizontally supported by a lens fixture with a hollow core. The lens fixture is clamped in a fixed base with a hollow core. The fixed base is installed on a fixed platform. A horizontal light path projection channel is formed inside the fixed platform. A projection tube is provided at one end of the light path projection channel, and a reflective element is provided at the other end. The reflective element reflects the horizontal light path projected by the projection tube vertically upward, and the light path passes through the fixed base, the lens fixture, and the lens to be tested in sequence, and is received by the detection head for detection.

2. The lens detection device according to claim 1, characterized in that, The detection head emits a vertically downward beam of light and projects it onto the lens under test.

3. The lens detection device according to claim 1, characterized in that, The reflective element is mounted on a mounting plate, which is adjustablely mounted to a mounting base using bolts arranged in a triangular pattern.

4. The lens detection device according to claim 1, characterized in that, The side of the fixture has an adsorption hole for drawing a vacuum inside the fixture to adsorb the lens to be tested onto the lens fixture.

5. The lens detection device according to claim 1, characterized in that, A lens driving assembly is provided on one side of the lens to be tested. The lens driving assembly includes a first belt that drives the lens to be tested to rotate horizontally. The first belt is disposed between one of the first single rotating wheel and the double rotating wheel. A second belt is disposed between the other rotating wheel of the double rotating wheel and the second single rotating wheel. A drive motor drives the second single rotating wheel.

6. The lens testing device according to claim 5, characterized in that, The lens driving assembly is installed on the fourth vertical displacement platform to achieve height displacement adjustment; the fourth vertical displacement platform is installed on the horizontal slide rail to achieve horizontal displacement adjustment.

7. The lens detection device according to claim 1, characterized in that, The lens to be tested includes different sizes and specifications, and the lens fixture that carries the lens to be tested is formed with different sizes and specifications to match. The bottom of the lens fixture of different sizes is engaged with the fixing seat.

8. The lens testing device according to claim 1, characterized in that, A lateral limiting fixture is provided on one side of the lens to be tested. The lateral limiting fixture has a V-shaped clamping opening at one end that contacts the lens to be tested, and an adjustment groove at the other end. The lateral limiting fixture is slidably mounted on a fixture mounting base below and also includes a locking screw. The locking screw is inserted into the adjustment groove to lock the lateral limiting fixture and the fixture mounting base.

9. The lens testing device according to claim 8, characterized in that, The fixture mounting base is installed on the first vertical displacement platform, the first vertical displacement platform is installed on the first horizontal displacement platform, the first horizontal displacement platform is installed on the second vertical displacement platform, and the second vertical displacement platform is fixedly installed on the fixed platform through multiple rows of fixing holes.

10. The lens detection device according to claim 1, characterized in that, The detection head is mounted on the clamping seat, the clamping seat is mounted on the third vertical displacement platform, the third vertical displacement platform is mounted on the adapter plate, the adapter plate is mounted on the lead screw connector, the lead screw connector is fixed to the lead screw, and the lead screw is driven by a motor.

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