Interference detection system and interference detection method of aspheric optical lens

Abstract

The invention provides an interference detection system and an interference detection method and system of an aspheric optical lens, the interference detection system is used for interference detection of the aspheric optical lens, the interference detection system comprises an interference detection platform and a laser interferometer, and the laser interferometer and the aspheric optical lens are both located on the interference detection platform. The laser interferometer and the aspheric optical lens are arranged at an interval, and the light emitting surface of the laser interferometer is opposite to the aspheric optical lens. Therefore, the detection effect of the aspheric optical lens is enhanced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of optical technology, and in particular to an interference detection system and an interference detection method for aspheric optical lenses. Background Art

[0002] With the continuous development of optical technology, aspheric optical lenses are increasingly used in people's lives. The current interference detection method for aspheric optical lenses is usually a contact profilometer detection method, that is, the position information of each point on the mirror surface of the aspheric optical lens is obtained by contacting the profilometer probe with the mirror surface of the aspheric optical lens, and then the profilometer generates the detection information of the aspheric optical lens. However, in the above detection method, since the mirror surface of the aspheric optical lens contacts the profilometer probe, the probe can easily scratch the mirror surface of the aspheric optical lens, resulting in a decrease in the performance of the aspheric optical lens or even causing the aspheric optical lens to be scrapped. It can be seen that the current detection effect of aspheric optical lenses is poor. Summary of the Invention

[0003] The embodiments of the present application provide an interference detection system and an interference detection method for aspheric optical lenses to solve the current problem of poor detection effect on aspheric optical lenses.

[0004] To solve the above problems, this application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides an interference detection system for interference detection of aspheric optical lenses, the interference detection system comprising an interference detection platform and a laser interferometer, the laser interferometer and the aspheric optical lens being both located on the interference detection platform, and the laser interferometer and the aspheric optical lens being spaced apart, the light emitting surface of the laser interferometer being arranged opposite to the aspheric optical lens.

[0006] As an optional embodiment, the interference detection system further includes an optical compensator, which is located on the interference detection platform and between the laser interferometer and the aspheric optical lens.

[0007] As an optional implementation, the interference detection platform is a pneumatic platform.

[0008] In a second aspect, an embodiment of the present application provides an interference detection method for an aspheric optical lens, which is applied to the interference detection system described in the first aspect, and the method includes:

[0009] Controlling a laser interferometer in the interference detection system to emit a first detection light toward the aspherical optical lens;

[0010] When the laser interferometer receives a second detection light and interference fringes appear on the laser interferometer, the laser interferometer is controlled to generate detection information of the aspheric optical lens based on the second detection light, where the second detection light is the detection light in the first detection light that encounters the aspheric optical lens and is reflected back to the laser interferometer.

[0011] As an optional embodiment, when the interference detection system includes an optical compensator, controlling the laser interferometer in the interference detection system to emit the first detection light toward the aspheric optical lens includes:

[0012] When it is detected that the laser interferometer meets a preset condition, controlling the laser interferometer to emit a first detection light toward the optical compensator;

[0013] The optical compensator is used to optically compensate the first detection light and emit the optically compensated first detection light to the aspheric optical lens.

[0014] As an optional implementation, the preset condition includes: the center point of the laser interferometer, the center point of the optical compensator and the center point of the aspheric optical lens are located on the same horizontal line.

[0015] As an optional implementation, the preset condition includes: a rated intensity value of the detection light emitted by the laser interferometer is less than a preset threshold value for interference detection of the aspheric optical lens.

[0016] As an optional implementation, before controlling the laser interferometer in the interference detection system to emit the first detection light toward the aspheric optical lens, the method further includes:

[0017] controlling the laser interferometer to emit a first debugging light toward the optical compensator;

[0018] When the laser interferometer receives a second debugging light, a prompt message is generated and output according to the second debugging light, wherein the prompt message is suggestion information for adjusting the first parameter of the optical compensator and / or the second parameter of the aspheric optical lens. The second debugging light is the debugging light in the first debugging light after optical compensation by the optical compensator, which encounters the aspheric optical lens and is reflected back to the laser interferometer.

[0019] As an optional embodiment, the first parameter includes at least one of the following: an eccentric position of the optical compensator, a tilt angle of the optical compensator, and a position of the optical compensator on the interference detection platform;

[0020] The second parameter includes at least one of the following: an eccentric position of the aspheric optical lens, an inclination angle of the aspheric optical lens, and a position of the aspheric optical lens on the interference detection platform.

[0021] As an optional implementation, the detection information is surface shape information of the aspherical optical lens.

[0022] In the embodiment of the present application, since the interference detection system includes an interference detection platform and a laser interferometer, the laser interferometer can realize non-contact detection of the aspheric optical lens by emitting a first detection light to the aspheric optical lens and reflecting a second detection light back to the laser interferometer based on the first detection light encountering the aspheric optical lens, thereby enhancing the detection effect of the aspheric optical lens and reducing the occurrence of the phenomenon that the contact detection in the related art leads to performance degradation of the aspheric optical lens or even scrapping of the aspheric optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 is a structural diagram of an interference detection system provided in an embodiment of the present application;

[0025] Figure 2 It is a flow chart of the interference detection method of the aspheric optical lens provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] The terms "first", "second" etc. in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. In addition, the terms "comprise" and "have" and any deformation thereof are intended to cover non-exclusive inclusions, such as, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are intrinsic to these processes, methods, products or equipment. In addition, "and / or" is used in the present application to represent at least one of connected objects, such as A and / or B and / or C, and represents comprising independent A, independent B, independent C, and A and B all exist, B and C all exist, A and C all exist, and 7 situations that A, B and C all exist.

[0028] See also Figure 1 , Figure 1 Schematic diagram of the structure of the interference detection system provided in the embodiment of the present application. Figure 1 As shown, an interference detection system is used for interference detection of aspheric optical lenses. The interference detection system includes: an interference detection platform 10 and a laser interferometer 20. The laser interferometer 20 and the aspheric optical lens 30 are both located on the interference detection platform 10, and the laser interferometer 20 and the aspheric optical lens 30 are arranged at intervals, and the light-emitting surface of the laser interferometer 20 is arranged opposite to the aspheric optical lens 30.

[0029] The working principle of the embodiment of the present application can be described as follows:

[0030] Since the interference detection system includes an interference detection platform 10 and a laser interferometer 20, and the laser interferometer 20 can realize non-contact detection of the aspheric optical lens 30 by emitting a first detection light to the aspheric optical lens 30 and reflecting a second detection light back to the laser interferometer 20 according to the first detection light encountering the aspheric optical lens 30, the detection effect of the aspheric optical lens 30 is enhanced, and at the same time, the occurrence of the phenomenon that the contact detection in the related technology causes the performance of the aspheric optical lens 30 to deteriorate or even the aspheric optical lens 30 to be scrapped is reduced, thereby ensuring the good surface quality and measurement efficiency of the aspheric optical lens 30.

[0031] Among them, the specific way in which the laser interferometer 20 and the aspheric optical lens 30 are arranged on the interference detection platform 10 is not limited here. Optionally, the laser interferometer 20 and the aspheric optical lens 30 are detachably arranged on the interference detection platform 10, so that the position of the laser interferometer 20 and the aspheric optical lens 30 on the interference detection platform 10 can be conveniently adjusted.

[0032] The light-emitting surface and the light-incoming surface of the laser interferometer 20 may be the same optical component, that is, the optical component can be used for both emitting and receiving light. Optionally, the optical component can switch between emitting and receiving light in different time periods. For example, at a first moment, the optical component can be used for emitting light, and at a second moment, the optical component can be used for receiving light.

[0033] Optionally, the center point of the light-emitting surface is arranged relative to the center point of the aspheric optical lens 30, and the center point of the light-emitting surface and the center point of the aspheric optical lens 30 can be located on the same straight line. In this way, the loss of the first detection light during transmission between the light-emitting surface and the aspheric optical lens 30 can be reduced, thereby enhancing the transmission effect of the first detection light between the light-emitting surface and the aspheric optical lens 30.

[0034] As an optional implementation, see Figure 1 The interference detection system further includes an optical compensator 40 , which is located on the interference detection platform 10 , and the optical compensator 40 is located between the laser interferometer 20 and the aspheric optical lens 30 .

[0035] The optical compensator 40 may also be detachably disposed on the interference detection platform 10 , so that the position of the optical compensator 40 on the interference detection platform 10 can be easily adjusted.

[0036] In the embodiment of the present application, since the optical compensator 40 is located between the laser interferometer 20 and the aspheric optical lens 30, the optical compensator 40 can compensate for the first detection light emitted by the laser interferometer 20, thereby enhancing the transmission quality of the first detection light, and further enhancing the detection effect of the aspheric optical lens 30.

[0037] It should be noted that the optical compensator 40 does not limit the parameters of the first detection light compensation. Optionally, the optical compensator 40 can compensate for at least one of the parameters of the first detection light, such as intensity, transmission direction, and color.

[0038] As an optional implementation, the interference detection platform 10 is a pneumatic platform.

[0039] Among them, since the interference detection platform 10 is a pneumatic platform, a driving component, a connecting component and a supporting component can be provided on the interference detection platform 10. The driving component is connected to the supporting component through the connecting component, and the driving component can drive the connecting component to move to drive the supporting component to move, and the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40 can all be set on different supporting components. In this way, the driving component can realize the position movement of the laser interferometer 20, the aspheric optical lens 30 or the optical compensator 40 set on different supporting components by driving different supporting components to move.

[0040] The specific type of the driving component is not limited here. Optionally, the driving component may be a cylinder piston assembly.

[0041] In an embodiment of the present application, when the interference detection platform 10 is a pneumatic platform, the position movement of the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40 on the interference detection platform 10 can be driven pneumatically, thereby enhancing the accuracy and movement efficiency of the position movement results of the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40.

[0042] In addition, when the interference detection platform 10 is a pneumatic platform, and the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40 are located on the interference detection platform 10, the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40 can be stably set on the interference detection platform 10, reducing the occurrence of jitter and other phenomena of the laser interferometer 20, the aspheric optical lens 30 and the optical compensator 40.

[0043] See also Figure 2 , Figure 2 The interference detection method of an aspheric optical lens provided in the embodiment of the present application is a flow chart. The interference detection method of an aspheric optical lens can be applied to the interference detection system described in the above embodiment, such as Figure 2 As shown, the interference detection method of the aspheric optical lens may include the following steps:

[0044] Step 201: Control the laser interferometer in the interference detection system to emit a first detection light toward the aspheric optical lens.

[0045] Among them, the execution entity of the embodiment of the present application can be a controller of a laser interferometer, or it can also be a controller of an interference detection system.

[0046] Step 202: When the laser interferometer receives a second detection light and interference fringes appear on the laser interferometer, control the laser interferometer to generate detection information of the aspheric optical lens based on the second detection light, where the second detection light is the detection light in the first detection light that encounters the aspheric optical lens and is reflected back to the laser interferometer.

[0047] Optionally, when interference fringes appear on the laser interferometer and the clarity of the interference fringes needs to be greater than a preset clarity, the laser interferometer is controlled to generate detection information of the aspherical optical lens according to the second detection light.

[0048] The specific type of detection information is not limited here. Optionally, the detection information may include at least one of the following: surface information, thickness information, shape information, etc. of the aspheric optical lens.

[0049] For example, as an optional embodiment, the detection information is the surface shape information of the aspheric optical lens. In this way, the detection effect of the surface shape information of the aspheric optical lens can be enhanced through the embodiment of the present application.

[0050] It should be noted that, optionally, the detection information of the aspheric optical lens is generated based on the second detection light, which can be understood as: the detection information of the aspheric optical lens can be directly generated based on the number, direction and other information of the second detection light; or, the detection information of the aspheric optical lens can be generated by combining the difference between the number of the first detection light and the number of the second detection light, as well as the difference between the direction of the first detection light and the direction of the second detection light.

[0051] It should be noted that since the interference detection method of the aspheric optical lens in the embodiment of the present application can be applied to the interference detection system described in the above embodiment, the various technical features can refer to the corresponding descriptions in the above embodiment, and the details will not be repeated here.

[0052] In the embodiment of the present application, through steps 201 to 202, since the interference detection system includes an interference detection platform and a laser interferometer, and the laser interferometer can transmit a first detection light to the aspheric optical lens, and realize non-contact detection of the aspheric optical lens based on the second detection light in the first detection light that encounters the aspheric optical lens and is reflected back to the laser interferometer, thereby enhancing the detection effect of the aspheric optical lens and reducing the phenomenon in the related art that the contact detection leads to performance degradation of the aspheric optical lens or even the scrapping of the aspheric optical lens.

[0053] As an optional embodiment, when the interference detection system includes an optical compensator, controlling the laser interferometer in the interference detection system to emit the first detection light toward the aspheric optical lens includes:

[0054] When it is detected that the laser interferometer meets a preset condition, controlling the laser interferometer to emit a first detection light toward the optical compensator;

[0055] The optical compensator is used to optically compensate the first detection light and emit the optically compensated first detection light to the aspheric optical lens.

[0056] In the embodiment of the present application, the optical compensator can compensate for the first detection light emitted by the laser interferometer, thereby enhancing the transmission quality of the first detection light and further enhancing the detection effect of the aspheric optical lens.

[0057] It should be noted that the specific content of the preset conditions is not limited here. As an optional implementation, the preset conditions can be: receiving user input on the control button on the laser interferometer for controlling the laser interferometer to emit the first detection light, and the input can be a press input, touch input or knob input, etc., which is not specifically limited here.

[0058] As another optional implementation, the preset condition includes: the center point of the laser interferometer, the center point of the optical compensator and the center point of the aspheric optical lens are located on the same horizontal line.

[0059] In the embodiment of the present application, when the center point of the laser interferometer, the center point of the optical compensator and the center point of the aspheric optical lens are located on the same horizontal line, it can be understood that the laser interferometer, the optical compensator and the aspheric optical lens are coaxial and have the conditions to form an interference detection light path. In this way, the accuracy of the detection results of the aspheric optical lens can be improved.

[0060] As another optional implementation, the preset condition includes: a rated intensity value of the detection light emitted by the laser interferometer is less than a preset threshold value for interference detection of the aspheric optical lens.

[0061] In the embodiment of the present application, the rated intensity value of the detection light emitted by the laser interferometer is less than the preset threshold value for interference detection of the aspheric optical lens, indicating that the intensity of the detection light emitted by the laser interferometer at this time does not meet the requirements for interference detection of the aspheric optical lens, and the intensity of the detection light emitted by the laser interferometer needs to be reinforced. Therefore, the intensity of the first detection light can be compensated by an optical compensator to meet the requirements for interference detection of the aspheric optical lens, thereby enhancing the accuracy of the detection results of the aspheric optical lens.

[0062] In addition, through the above-mentioned different implementations, the diversity and flexibility of the preset conditions are increased, making the manner of controlling the laser interferometer to emit the first detection light toward the optical compensator more diverse and flexible.

[0063] As an optional implementation, before controlling the laser interferometer in the interference detection system to emit the first detection light toward the aspheric optical lens, the method further includes:

[0064] controlling the laser interferometer to emit a first debugging light toward the optical compensator;

[0065] When the laser interferometer receives a second debugging light, a prompt message is generated and output according to the second debugging light, wherein the prompt message is suggestion information for adjusting the first parameter of the optical compensator and / or the second parameter of the aspheric optical lens. The second debugging light is the debugging light in the first debugging light after optical compensation by the optical compensator, which encounters the aspheric optical lens and is reflected back to the laser interferometer.

[0066] The prompt information can be displayed on the display screen of the laser interferometer, and / or can also be sent to an electronic device that is communicatively connected to the laser interferometer, and the electronic device can be an electronic device used by the user. In this way, it can prompt the user to adjust the first parameter of the optical compensator and / or the second parameter of the aspheric optical lens in a timely and accurate manner.

[0067] In the embodiments of the present application, the prompt effect of adjusting the first parameter of the optical compensator and / or the second parameter of the aspherical optical lens can be enhanced.

[0068] As an optional embodiment, the first parameter includes at least one of the following: an eccentric position of the optical compensator, a tilt angle of the optical compensator, and a position of the optical compensator on the interference detection platform;

[0069] The second parameter includes at least one of the following: an eccentric position of the aspheric optical lens, an inclination angle of the aspheric optical lens, and a position of the aspheric optical lens on the interference detection platform.

[0070] In the embodiments of the present application, the diversity and flexibility of the first parameter and the second parameter can be increased. At the same time, by adjusting the first parameter and / or the second parameter, the effect of detecting aspherical optical lenses can be enhanced.

[0071] The above is a preferred implementation of the embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An interference detection system for interference detection of aspheric optical lenses, characterized in that: The interference detection system includes an interference detection platform and a laser interferometer. The laser interferometer and the aspheric optical lens are both located on the interference detection platform. The laser interferometer and the aspheric optical lens are arranged at intervals. The light-emitting surface of the laser interferometer is arranged opposite to the aspheric optical lens.

2. The interference detection system according to claim 1, characterized in that: The interference detection system further includes an optical compensator, which is located on the interference detection platform and between the laser interferometer and the aspherical optical lens.

3. The interference detection system according to claim 1 or 2, characterized in that: The interference detection platform is a pneumatic platform.

4. An interference detection method for aspherical optical lenses, characterized in that: The interference detection system applied to any one of claims 1 to 3, the method comprising: Controlling a laser interferometer in the interference detection system to emit a first detection light beam toward the aspherical optical lens; When the laser interferometer receives a second detection light and interference fringes appear on the laser interferometer, the laser interferometer is controlled to generate detection information of the aspheric optical lens according to the second detection light, where the second detection light is the detection light in the first detection light that encounters the aspheric optical lens and is reflected back to the laser interferometer.

5. The method according to claim 4, characterized in that In the case where the interference detection system includes an optical compensator, controlling a laser interferometer in the interference detection system to emit a first detection light toward an aspherical optical lens includes: When it is detected that the laser interferometer meets a preset condition, controlling the laser interferometer to emit a first detection light toward the optical compensator; The optical compensator is used for optically compensating the first detection light and emitting the optically compensated first detection light to the aspherical optical lens.

6. The method according to claim 5, characterized in that The preset condition includes: the center point of the laser interferometer, the center point of the optical compensator and the center point of the aspherical optical lens are located on the same horizontal line.

7. The method according to claim 5, characterized in that The preset condition includes: a rated intensity value of the detection light emitted by the laser interferometer is less than a preset threshold value for interference detection of the aspherical optical lens.

8. The method according to any one of claims 5 to 7, characterized in that Before controlling the laser interferometer in the interference detection system to emit a first detection light beam toward the aspherical optical lens, the method further includes: Controlling the laser interferometer to emit a first debugging light toward the optical compensator; When the laser interferometer receives a second debugging light, a prompt message is generated and output according to the second debugging light, wherein the prompt message is suggestion information for adjusting the first parameter of the optical compensator and / or the second parameter of the aspheric optical lens, and the second debugging light is the debugging light that is reflected back to the laser interferometer by the aspheric optical lens in the first debugging light after optical compensation by the optical compensator.

9. The method according to claim 8, characterized in that The first parameter includes at least one of the following: an eccentric position of the optical compensator, a tilt angle of the optical compensator, and a position of the optical compensator on the interference detection platform; The second parameter includes at least one of the following: an eccentric position of the aspheric optical lens, an inclination angle of the aspheric optical lens, and a position of the aspheric optical lens on the interference detection platform.

10. The method according to any one of claims 5 to 7, characterized in that The detection information is the surface shape information of the aspherical optical lens.

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