CN220305164U - A lens testing and clamping device and lens detector - Google Patents

Abstract

The utility model discloses a lens test clamping device and a lens detector, wherein the lens test clamping device comprises a lens fixing seat, the middle part of the lens fixing seat is provided with a mounting through hole for mounting a lens, the front surface of the lens fixing seat is provided with two first avoidance grooves for exposing part of side walls of the front part of the lens, and the rear surface of the lens fixing seat is provided with two second avoidance grooves for exposing part of side walls of the rear part of the lens; the lens detector comprises a test platform, wherein the test platform is respectively provided with a light source, a photoelectric receiver and the lens test clamping device. The utility model aims to solve the problems of inconvenient clamping operation and overlong detection time of the existing lens fixing frame, and realize the detection function of maximizing the angle range of incident and refracted light rays so as to support the detection of reflection and refractive index at all angles.

Description

A lens testing and clamping device and lens detector

Technical field

The utility model relates to lens testing equipment, in particular to a lens testing clamping device and a lens detector.

Background technique

In many important engineering applications and scientific research experiments, it is necessary to carry out high-precision measurement of the transmittance and reflectivity of optical components. Especially in the laser field, the requirements for the technical performance and accuracy of glass cavity plates are very strict. For the transmittance of the lens, And reflectivity are important indicators to measure the performance of a precision lens. When performing transmittance/reflectance testing, a lens holder is required to clamp the lens. Currently, the lens frames on the market, while fixed, will also block incident light and refracted reflected light at a certain angle, causing the lens to be unable to detect reflection and refractive index at all angles. In addition, the installation of lenses in existing lens frames is inconvenient, resulting in long detection times.

Utility model content

Technical problems to be solved by this utility model: Aiming at the above-mentioned problems of the prior art, a lens testing clamping device and a lens detector are provided. The utility model aims to solve the problem of incident, refracted, and reflected light rays being detected at larger and smaller angles. The lens is blocked by the frame, causing the lens to be unable to detect reflection and refractive index at all angles, so as to maximize the detection function of the incident and refracted light angle range of the lens.

In order to solve the above technical problems, the technical solution adopted by this utility model is:

The utility model provides a lens testing and clamping device, which includes a lens holder. The middle part of the lens holder is provided with a mounting through hole for installing lenses. The front surface of the lens holder is provided with two oppositely arranged second holes. An escape groove, two first escape grooves are respectively arranged on both sides of the radial direction of the installation through hole, the first escape groove extends along one side of the radial direction to penetrate the side wall surface of the lens holder, and along all directions The other side in the radial direction extends to communicate with the mounting through hole, so that part of the side wall of the front part of the lens is exposed in the first escape groove, and the rear surface of the lens holder is provided with two second escape grooves , the two second escape grooves correspond to the two first escape grooves one by one, and the second escape grooves extend along one side of the radial direction to penetrate the side wall surface of the lens holder, and along the radial direction Extend to the other side of the direction to communicate with the installation through hole, so that part of the side wall at the rear of the lens is exposed in the second escape groove.

Optionally, the lens holder is provided with a locking mechanism for locking and fixing the lens in the mounting through hole.

Optionally, the locking mechanism includes a threaded hole opened on the side of the lens holder, and a locking screw threadedly matched with the threaded hole. The locking screw passes through the threaded hole and abuts against the lens.

Optionally, it also includes a base, the upper end surface of the base is provided with a slot, the slot penetrates the front surface of the base, and partially penetrates the rear surface of the base, so that the front and rear surfaces of the lens are exposed to the Outside the slot, the lens holder is inserted into the slot, and the front of the lens holder protrudes out of the slot, so that the front of the lens is exposed and part of the side wall outside the mounting through hole is exposed. In addition to the slot, the rear surface of the base is provided with two third escape grooves, the two third escape grooves correspond to the two second escape grooves one by one, and the third escape grooves are arranged along the One side of the radial direction extends to penetrate the side wall of the base, and the other side of the radial direction extends to communicate with the slot, and extends toward the front surface of the base until the rear part of the lens is exposed. Part of the side wall outside the installation through hole is exposed outside the slot.

Optionally, a threaded through hole is provided on the rear surface of the base, and a fastening screw is provided in the threaded through hole for pressing and fixing the lens holder to the base.

Optionally, a mounting hole is provided at the end of the fastening screw, a pressing ball is embedded in the opening of the mounting hole, a spring is provided inside the mounting hole, and one end of the spring resists the mounting hole. The bottom and other end of the lens are connected to the pressing ball. The fastening screw is threaded with the threaded through hole on the base and the pressing ball presses on the lens holder.

Optionally, the side wall of the slot is provided with two slide grooves arranged oppositely, and slider bars are provided on both sides of the lens holder. The slider bars of the lens holder are slidably arranged on the corresponding slide. slot to achieve a sliding plug-in connection with the base.

Optionally, the second relief groove extends toward the corresponding slider bar and penetrates the side wall surface of the slider bar.

Optionally, the chute is arranged in a vertical direction and runs through the upper and lower end surfaces of the base, and a supporting plate for lifting and fixing the lens holder is fixed on the lower end surface of the chute.

The utility model also provides a lens detector, which includes a test platform. The test platform is provided with a light source, a photoelectric receiver, and the aforementioned lens test clamping device.

Compared with the prior art, this utility model mainly has the following advantages: the front surface of the lens holder of the utility model is provided with two first escape grooves to expose part of the side wall of the front part of the lens, and the rear surface of the lens holder is Two second escape grooves are provided on the surface to expose part of the side wall at the rear of the lens. The lens holder is designed to have a symmetrically arranged escape groove structure on the left and right sides, and the escape groove structure allows part of the front and rear of the lens to be exposed. The side wall is exposed, so that during the detection process of the lens, light with a larger incident angle can be incident from the first escape groove, and reflected light with a larger reflection angle can be emitted through the first escape groove to be detected, and the refraction angle is larger The refracted light can be emitted through the second avoidance groove to be detected, so as to maximize the detection function of the angle range of incident, reflected and refracted light and improve the accuracy of lens transmittance and reflectivity detection.

Description of drawings

Figure 1 is a schematic three-dimensional structural diagram of a lens installed on a lens holder according to an embodiment of the present invention.

Figure 2 is a schematic three-dimensional structural diagram of the lens holder according to the embodiment of the present invention.

Figure 3 is a schematic three-dimensional structural view from the front side of the lens installed on the lens holder according to the embodiment of the present invention.

Figure 4 is a schematic three-dimensional structural diagram of the lens installed on the lens holder in the back side direction according to the embodiment of the present invention.

Figure 5 is a schematic three-dimensional structural diagram of the front surface side of the base according to the embodiment of the present invention.

Figure 6 is a schematic three-dimensional structural diagram of the rear surface side of the base according to the embodiment of the present invention.

Figure 7 is a schematic three-dimensional structural diagram from the front side of the lens testing and clamping device according to the embodiment of the present invention.

Figure 8 is a schematic three-dimensional structural diagram from the back side of the lens testing and clamping device according to the embodiment of the present invention.

Figure 9 is a schematic front structural view of the lens testing and clamping device according to the embodiment of the present invention.

Figure 10 is a schematic cross-sectional structural diagram along line A-A in Figure 9 .

Figure 11 is a schematic rear structural view of the lens testing and clamping device according to the embodiment of the present invention.

Fig. 12 is a schematic structural diagram of the B-B cross-section in Fig. 11.

Legend: 1. Base; 11. Slot; 12. Third escapement groove; 13. Slide groove; 14. Threaded through hole; 2. Lens holder; 21. Installation through hole; 22. First escapement position groove; 23. Second escape groove; 24. Threaded hole; 25. Slider strip; 4. Fastening screw; 41. Mounting hole; 42. Pressing ball; 43. Spring; 5. Supporting plate.

Detailed ways

As shown in Figures 1, 2, 3 and 4, the lens test fixture of this embodiment includes a lens holder 2. The middle of the lens holder 2 is provided with a mounting through hole 21 for mounting the lens. The lens holder 2 The front surface is provided with two first escape grooves 22 arranged oppositely. The two first escape grooves 22 are located on both sides of the mounting through hole 21 in the radial direction. One of the first escape grooves 22 is along one side of the radial direction. One side extends to penetrate the side wall surface of the lens holder 2, and the other side along the radial direction extends to communicate with the mounting through hole 21, so that part of the side wall of the front part of the lens (shown as a in Figure 1) is exposed. The first escape groove 22 is provided with two second escape grooves 23 on the rear surface of the lens holder 2. The two second escape grooves 23 correspond to the two first escape grooves 22 one by one, and the second escape grooves 23 correspond to the first escape grooves 22. One side of the slot 23 along the radial direction extends to penetrate the side wall surface of the lens holder 2 , and the other side along the radial direction extends to communicate with the mounting through hole 21 , so that part of the side wall at the rear of the lens (such as (shown as a1 in FIG. 4 ) is exposed in the second escape groove 23 . Through the above structure, the lens holder 2 is designed to have a symmetrically arranged escape groove structure on the left and right sides, and the escape groove structure exposes part of the front and rear side walls of the lens, so that during the detection process of the lens, light with a larger incident angle can It can be incident from the first escape groove, the reflected light with a larger reflection angle can be emitted through the first escape groove to be detected, and the refracted light with a larger refraction angle can be emitted through the second escape groove to be detected, so as to realize The angle range of incident, reflected and refracted light maximizes the detection function and improves the accuracy of lens transmittance and reflectivity detection.

The lens can be directly inserted and fixed in the mounting through hole 21 to facilitate the installation and removal of the lens. Furthermore, considering that the lens is easy to loosen in this way, it will affect the accuracy of the lens test. In order to solve the above problem, in this embodiment, the lens holder 2 is provided with a locking mechanism for locking and fixing the lens in the mounting through hole 21, which is beneficial to improving the firmness of the lens installation. There is no doubt that the number of locking mechanisms can be single or multiple as required.

As an optional implementation, as shown in Figures 2 and 4, the locking mechanism in this embodiment includes a threaded hole 24 opened on the side of the lens holder 2, and a locking screw threadedly matched with the threaded hole 24. The locking screw passes through the threaded hole 24 and then contacts the lens, thereby locking and fixing the lens in the mounting through hole 21 . In addition, the locking mechanism 3 can also use a locking rod and a through hole inserted into the lens holder 2. The locking rod is inserted into the through hole and has a spring between it and the lens holder 2. The locking rod provides locking force to press and fix the lens in the mounting through hole 21 .

As shown in Figures 5 and 6, the lens test fixture of this embodiment also includes a base 1. The upper end surface of the base 1 is provided with a slot 11. The slot 11 penetrates the front surface of the base 1 and partially penetrates the base. The rear surface of the base 1, so that the front and rear surfaces of the lens are exposed outside the slot 11, the lens holder 2 is inserted into the slot 11, and the front part of the lens holder 2 protrudes outside the slot 11, so that the front part of the lens Part of the side wall exposed outside the mounting through hole 21 is exposed outside the slot 11. The rear surface of the base 1 is provided with two third escape grooves 12, two third escape grooves 12 and two second escape grooves 23. one-to-one correspondence, and one side of the third relief groove 12 along the radial direction extends to penetrate the side wall of the base 1 , and the other side along the radial direction extends to communicate with the slot 11 and faces the base 1 The front surface of the lens extends to the rear of the lens and is exposed outside the mounting through hole 21, and part of the side wall is exposed outside the slot 11. After the lens is inspected, if you need to inspect a new lens, you need to remove the lens holder 2 from the inspection instrument, install the new lens and then re-adjust the position of the lens holder 2 on the inspection instrument so that the lens orientation meets the inspection requirements. . As shown in Figures 7, 8, 9, 10, 11 and 12, this embodiment adds a base 1 with a slot 11. The base 1 is fixed on the detection instrument, and the base 1 is fixed to the lens. The base 2 adopts a plug-in assembly method (the lens holder 2 is inserted into the slot 11), so when replacing a new detection lens, you only need to pull out the lens holder 2 from the base 1 and install the lens externally. Finally, insert the lens holder 2 into the base 1, thereby making the installation of the lens more convenient. Moreover, when the base 1 is plugged into the lens holder 2, the front part of the lens holder 2 protrudes out of the slot 11, and two symmetrical escape grooves 12 are also provided on the rear surface of the base 1, so that Part of the side wall of the front and rear of the lens is exposed outside the mounting through hole and is exposed outside the slot 11 to avoid the base from blocking incident, reflected and refracted light at larger angles, and to maximize the detection function of the incident, reflected and refracted light angle range. . B and d in Figure 10 show the boundaries of the angle range of incident, reflected and refracted light rays, and the angle range of incident, reflected and refracted light rays is shown as c in Figure 10 .

As shown in Figure 12, the rear surface of the base 1 is provided with a threaded through hole 14, and the threaded through hole 14 is provided with a fastening screw 4 for pressing and fixing the lens holder 2 to the base 1, so that the base On the basis of sliding fit, the connection between 1 and the lens holder 2 is more solid and reliable, which is conducive to improving the accuracy of lens detection.

As shown in Figure 12, a mounting hole 41 is provided at the end of the fastening screw 4. A pressing ball 42 is embedded in the opening of the mounting hole 41. A spring 43 is provided inside the mounting hole 41. One end of the spring 43 resists the mounting surface. The bottom and other end of the hole 41 are connected to the pressing ball 42. The fastening screw 4 is threadedly matched with the threaded through hole 14 on the base 1 and the pressing ball 42 is pressed against the lens holder 2. Through the force of the spring 43 The elasticity ensures that the base 1 and the lens holder 2 are firm and reliable in the vertical direction of the sliding surface without affecting the sliding between the base 1 and the lens holder 2.

As shown in Figures 5 and 6, two opposite slide grooves 13 are provided on the side wall of the slot 11, and slider bars 25 are provided on both sides of the lens holder 2. The slider bars 25 of the lens holder 2 slide It is arranged in the corresponding slide groove 13 to achieve a sliding plug-in connection with the base 1, so that the sliding between the base 1 and the lens holder 2 is stable and reliable. In this embodiment, the second escape groove 23 extends toward the corresponding slider bar 25 and penetrates the side wall surface of the slider bar 25 to avoid the base from blocking incident, reflected and refracted light at larger angles, thereby achieving incident, Reflected and refracted light angular range maximizes detection capabilities.

As shown in Figures 7, 8 and 10, in this embodiment, the chute 13 is arranged in the vertical direction and runs through the upper and lower end surfaces of the base 1. The lower end surface of the chute 13 is fixed on the base 1 for lifting and fixing. The purpose of the supporting plate 5 of the lens holder 2 is to lift and fix the lens holder 2 inserted into the base 1 .

It should be noted that the "front" and "back" in the front and rear surfaces, and the "upper" and "lower" in the upper and lower end surfaces involved in the text description of this embodiment are all used to express the relative relationship between the above-mentioned surfaces or end surfaces. relationship, and should not be understood as a description of the absolute positional relationship of the above-mentioned surfaces or end faces, which may be expressed differently in different directions and perspectives. In addition, “first”, “second” and “third” in the first escape groove 22, the second escape groove 23 and the third escape groove 12 are all used to distinguish the above escape grooves and should not be used. It is regarded as a naming or functional restriction on the above-mentioned escape grooves. Therefore, other methods that can distinguish the above-mentioned escape grooves can also be used to name them as needed.

In addition, this embodiment also provides a lens tester, which includes a test platform. The test platform is provided with a light source, a photoelectric receiver, and the lens test clamping device as mentioned above. When working, the light emitted by the light source is refracted/reflected by the lens fixed on the lens holder and then received by the photoelectric receiver. Therefore, through the light intensity received by the photoelectric receiver, some detection of the lens can be achieved, including refractive index and reflectivity detection. wait.

The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above-mentioned embodiments. All technical solutions falling under the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications may be made without departing from the principles of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (10)

1. A lens testing and clamping device, characterized in that it includes a lens holder (2), and a mounting through hole (21) for installing lenses is provided in the middle of the lens holder (2). The lens holder (2) The front surface of (2) is provided with two first escape grooves (22) arranged oppositely. The two first escape grooves (22) are located on both sides of the radial direction of the installation through hole (21). The slot (22) extends along one side of the radial direction to penetrate the side wall surface of the lens holder (2), and extends along the other side of the radial direction to communicate with the mounting through hole (21), so as to Part of the side wall of the front part of the lens is exposed in the first escape groove (22). The rear surface of the lens holder (2) is provided with two second escape grooves (23). The two second escape grooves are (23) corresponds to the two first relief grooves (22), and the second relief groove (23) extends along one side of the radial direction to penetrate the side wall surface of the lens holder (2), and The other side along the radial direction extends to communicate with the mounting through hole (21), so that part of the side wall at the rear of the lens is exposed in the second escape groove (23). 2. The lens testing and clamping device according to claim 1, characterized in that the lens holder (2) is provided with a locking mechanism for locking and fixing the lens in the mounting through hole (21). 3. The lens testing and clamping device according to claim 2, characterized in that the locking mechanism includes a threaded hole (24) opened on the side of the lens holder (2), and the threaded hole (24) is connected to the threaded hole (24). The locking screw is threaded, and the locking screw passes through the threaded hole (24) and contacts the lens. 4. The lens testing and clamping device according to any one of claims 1 to 3, characterized in that it also includes a base (1), the upper end surface of the base (1) is provided with a slot (11), The slot (11) penetrates the front surface of the base (1), and partially penetrates the rear surface of the base (1), so that the front and rear surfaces of the lens are exposed outside the slot (11), and the lens holder (2) Insert into the slot (11), and the front part of the lens holder (2) protrudes out of the slot (11), so that the front part of the lens exposes the mounting through hole (21) Part of the outer side wall is exposed outside the slot (11). The rear surface of the base (1) is provided with two third escape grooves (12). The two third escape grooves (12) and two The second relief grooves (23) correspond one to one, and the third relief groove (12) extends along one side of the radial direction to penetrate the side wall of the base (1), and extends along the radial direction. The other side extends to communicate with the slot (11), and extends toward the front surface of the base (1) to the rear of the lens, exposing part of the side wall outside the mounting through hole (21) and exposing the slot. (11) Outside. 5. The lens testing and clamping device according to claim 4, characterized in that a threaded through hole (14) is provided on the rear surface of the base (1), and a threaded through hole (14) is provided inside the threaded through hole (14). Press the lens holder (2) against the fastening screws (4) fixed on the base (1). 6. The lens testing and clamping device according to claim 5, characterized in that the end of the fastening screw (4) is provided with a mounting hole (41), and the opening of the mounting hole (41) is embedded with There is a pressing ball (42), and a spring (43) is provided inside the mounting hole (41). One end of the spring (43) resists the bottom of the mounting hole (41), and the other end is in contact with the pressing ball (42). 42), the fastening screw (4) is threadedly matched with the threaded through hole (14) on the base (1) and the pressing ball (42) is pressed on the lens holder (2). 7. The lens testing and clamping device according to claim 4, characterized in that two oppositely arranged slide grooves (13) are provided on the side wall of the slot (11), and the lens holder (2) There are slider bars (25) on both sides of the lens holder (2), and the slider bars (25) of the lens holder (2) are slidably arranged in the corresponding chute (13) to achieve sliding insertion with the base (1). connected. 8. The lens testing and clamping device according to claim 7, characterized in that the second escape groove (23) extends toward the corresponding slider bar (25) to penetrate through the slider bar (25). Side wall surface. 9. The lens testing and clamping device according to claim 8, characterized in that the chute (13) is arranged in the vertical direction and penetrates the upper and lower end surfaces of the base (1). A supporting plate (5) for lifting and fixing the lens holder (2) is fixed on the lower end surface of the chute (13). 10. A lens detector, characterized in that it includes a test platform, and the test platform is respectively provided with a light source, a photoelectric receiver, and a lens test clamping device as claimed in any one of claims 1 to 9.