Tool for auxiliary measurement of lens wave aberration

Abstract

The utility model belongs to the technical field of lens wave aberration auxiliary measurement devices, and particularly relates to a tool for auxiliary measurement of lens wave aberration, which comprises a lens and a tool body connected with the lens, the tool body comprises a fixed plate and a transmission assembly connected with the fixed plate, one end of the transmission assembly is connected with a rotating assembly, and the other end of the transmission assembly is connected with a rotating shaft. The rotating assembly is connected with the lens; the transmission assembly comprises a first fixing flange and a ratchet wheel arranged at one end of the first fixing flange. The outer side of the ratchet wheel is engaged with a pawl. The other end of the first fixing flange is connected with the rotating assembly. The rotating assembly comprises a sliding bearing connected with the first fixing flange, and the sliding bearing is connected with a rotating indicating dial. According to the auxiliary measuring tool, the lens is rotated through the ratchet wheel and pawl structure, the structure is simple and efficient, the fixing screws do not need to be disassembled frequently, the production efficiency is effectively improved, the accuracy of the rotation angle of the lens is guaranteed through the machining and assembling precision of the ratchet wheel and the pawl, and the accuracy of the measured wave aberration numerical value is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lens wave aberration auxiliary measurement devices, and in particular relates to a tool used for auxiliary measurement of lens wave aberration. Background Art

[0002] After the optical lens is assembled and adjusted, the ZYGO laser interferometer is needed to measure the wave aberration of the lens to detect whether the optical lens meets the design requirements.

[0003] During the wavefront aberration measurement process, the lens needs to be rotated counterclockwise in the same direction of the optical axis to four positions (90° each time), and the corresponding data is measured at each position. The tooling currently used for lens wavefront aberration measurement mainly uses four screw holes evenly distributed on the lens to achieve the purpose of fixing the lens, such as Figure 1 As shown, the optical lens 1 is fixed to the flange 2 by four screws 3, 4, 5, and 6, and the flange 2 is fixed to the five-dimensional adjustment frame by a fixing plate, and the whole is placed on the test platform; when the lens is located at a position and the corresponding aberration value is measured, the lens needs to be rotated 90° along the optical axis to measure again. The whole measurement process needs to rotate the lens four times in the clockwise direction and measure the wave aberration respectively; each time the lens rotates, the four screws need to be removed, and after the lens rotates 90°, the lens is fixed to the flange again with these four screws. The positions of the screws and the lens are set to remain relatively unchanged. Initially, the corresponding relationship between the screws and the screw holes on the flange is 3-3', 4-4', 5-5', 6-6'; after the lens rotates 90° clockwise, the corresponding relationship between the screws and the screw holes on the flange is 3-4', 4-5', 5-6', 6-3'; and so on, the screws are removed 4 times, and the lens is rotated 4 times to measure the wave aberration respectively.

[0004] The above-mentioned method of fixing the lens by fixing screws requires frequent removal of the fixing screws, which can easily cause scratches on the optical lens, and the removal is cumbersome, affecting the measurement efficiency. In addition, the angle of lens rotation during each measurement is determined by the position of the screw hole, and the measurement accuracy is not high. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a tool for assisting in measuring the wave aberration of a lens, which solves the problem that the existing auxiliary fixing device needs to frequently disassemble the fixing screws to rotate the lens, thus affecting the measurement efficiency and measurement accuracy.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] Provided is a tool for assisting in measuring the wave aberration of a lens, comprising a lens and a tool body connected to the lens, the tool body comprising a fixed plate and a transmission assembly connected to the fixed plate, one end of the transmission assembly is connected to a rotating assembly, and the rotating assembly is connected to the lens;

[0008] The transmission assembly includes a first fixed flange and a ratchet wheel arranged at one end of the first fixed flange, and a ratchet pawl is meshedly connected to the outer side of the ratchet wheel; the other end of the first fixed flange is connected to the rotating assembly;

[0009] The rotating assembly comprises a sliding bearing connected to the first fixed flange, and the sliding bearing is connected to a rotating indicating disk.

[0010] The beneficial effects of adopting the above technical scheme are as follows: the lens is connected to the transmission assembly through the rotating assembly, and the transmission assembly is fixed on the five-dimensional adjustment frame through the fixing plate, so that the lens and the five-dimensional adjustment frame are fixed; first, the fixing plate is fixed on the five-dimensional adjustment frame, and the lens is fixed on the sliding bearing of the rotating assembly through the fixing screw to complete a wave aberration measurement, and then the rotating indicator disk is manually rotated clockwise, and the rotating indicator disk drives the ratchet to rotate, and then drives the lens to rotate, so as to realize the wave aberration measurement of different positions of the lens; the rotation of the lens is realized by using the transmission assembly composed of a ratchet and a pawl in coordination with the rotating assembly, and the transmission accuracy between the ratchet and the pawl is higher than that of the fixing screw, which helps to improve the accuracy of the lens wave aberration measurement, and there is no need to frequently disassemble the fixing screw to rotate the lens, so that the whole measurement process is simple and efficient.

[0011] Furthermore, a fixed pressure ring is arranged between the sliding bearing and the first fixed flange.

[0012] The beneficial effect of adopting the above technical solution is that the fixed pressure ring can be used to axially limit the first fixed flange and the sliding bearing to ensure that when the rotating indicator disk is rotated, the transmission assembly can be driven to rotate through the sliding bearing.

[0013] Furthermore, a scale plate is arranged outside the rotating indicator plate.

[0014] The beneficial effects of adopting the above technical solution are: the scale set on the dial can be used to determine the rotation angle of the lens when rotating, and the sliding bearing can be further fixed by the dial, ensuring the rotation consistency between the rotating indicator disk and the sliding bearing.

[0015] Furthermore, a tooling ring is provided on one side of the dial, and a threaded hole is provided on the tooling ring.

[0016] The beneficial effects of adopting the above technical solution are: the lens can be fixed on the tooling ring through the threaded hole on the tooling ring, and the tooling ring can also be replaced by the tooling ring or additional holes are punched on the tooling ring to achieve matching of different lenses, which effectively improves the practicality of the auxiliary measurement tooling.

[0017] Furthermore, a knurled pattern is provided on the rotating indicator disk.

[0018] The beneficial effect of adopting the above technical solution is: by arranging the knurled pattern on the rotating indicator disk, the friction between the rotating indicator disk and the rotating indicator disk can be increased during rotation, which is conducive to manually rotating the rotating indicator disk and realizing precise control of the rotation angle.

[0019] Furthermore, a second fixing flange is arranged on one side of the lens, and a first fixing through hole matching the threaded hole is arranged at one end of the second fixing flange.

[0020] The beneficial effect of adopting the above technical solution is that the first fixing through hole provided at one end of the second fixing flange can be used to fix the lens and the auxiliary measuring tooling by fixing screws, which is convenient for installation and disassembly.

[0021] Furthermore, a mounting groove is provided on the fixing plate, and a second fixing through hole is provided at the vertex of the fixing plate.

[0022] The beneficial effects of adopting the above technical solution are: the transmission assembly is arranged in the mounting groove on the fixed plate, and the lens can be fixed on the five-dimensional adjustment frame through the auxiliary measurement tooling through the second fixing through hole.

[0023] In summary, the tooling for assisting in measuring the wave aberration of a lens provided by the utility model has the following beneficial effects: the auxiliary measuring tooling rotates the lens through a ratchet and pawl structure, and the structure is simple and efficient, and there is no need to frequently disassemble the fixing screws, thereby effectively improving the production efficiency. The machining and assembly accuracy of the ratchet and pawl ensure the accuracy of the lens rotation angle, which helps to improve the accuracy of the measured wave aberration value. During measurement, the lens can be rotated by rotating the rotating indicator disk to drive the ratchet to rotate, and the dial can be used to indicate the rotation angle of the lens. The control of the 90° rotation of the lens can be achieved by simply controlling the rotation of the ratchet by controlling the rotating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the auxiliary measurement tool structure in the prior art;

[0025] Figure 2 It is a schematic diagram of the assembly of the utility model;

[0026] Figure 3 It is a disassembly schematic diagram of the utility model;

[0027] Among them, 1. lens; 2. tooling body; 3. fixing plate; 4. first fixing flange; 5. ratchet; 6. pawl; 7. sliding bearing; 8. rotating indicator plate; 9. fixed pressure ring; 10. dial; 11. tooling ring; 12. threaded hole; 13. second fixing flange; 14. first fixing through hole; 15. mounting groove; 16. second fixing through hole. DETAILED DESCRIPTION

[0028] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0029] like Figure 2 and Figure 3 As shown, the tooling for assisting in measuring the wave aberration of a lens provided by the utility model comprises a lens 1 and a tooling body 2 connected to the lens 1, a second fixing flange 13 is arranged on one side of the lens 1, a first fixing through hole 14 matching the threaded hole 12 is arranged at one end of the second fixing flange 13, the tooling body 2 comprises a fixing plate 3 and a transmission assembly connected to the fixing plate 3, a rotating assembly is connected to one end of the transmission assembly, and the rotating assembly is connected to the lens 1; the lens 1 is connected to the transmission assembly through the rotating assembly, and the transmission assembly is fixed on the five-dimensional adjustment frame through the fixing plate 3, and the transmission assembly can be driven to rotate by rotating the rotating assembly to realize the control of the rotation angle of the lens 1, the structure is simple and efficient, which can not only ensure the measurement accuracy, but also simplify the tooling structure and avoid the frequent disassembly of the lens 1.

[0030] like Figure 3 As shown, the transmission assembly includes a first fixed flange 4 and a ratchet 5 arranged at one end of the first fixed flange 4, and a pawl 6 is meshed and connected on the outer side of the ratchet 5; the other end of the first fixed flange 4 is connected to the rotating assembly; the rotating assembly includes a sliding bearing 7 connected to the first fixed flange 4, and the sliding bearing 7 is connected to a rotating indicator plate 8; a fixed pressure ring 9 is arranged between the sliding bearing 7 and the first fixed flange 4; when in use, first fix the fixed plate 3 on the five-dimensional adjustment frame, fix the lens 1 on the sliding bearing 7 of the rotating assembly by fixing screws, complete a wave aberration measurement, and then manually rotate the rotating indicator plate 8 clockwise to rotate the rotating indicator plate 8. The ratchet 5 is driven to rotate, and then the lens 1 is driven to rotate, so as to realize the wave aberration measurement of different positions of the lens 1; the rotation of the lens 1 is realized by utilizing the cooperation between the transmission component composed of the ratchet 5 and the pawl 6 and the rotating component. The transmission accuracy between the ratchet 5 and the pawl 6 is higher than that of the fixing screw, which is helpful to improve the accuracy of the wave aberration measurement of the lens 1, and there is no need to frequently disassemble the fixing screw to rotate the lens 1, so that the whole measurement process is simple and efficient, and the fixed pressure ring 9 can be used to axially limit the first fixed flange 4 and the sliding bearing 7 to ensure that when the rotating indicator disk 8 is rotated, the transmission component can be driven to rotate through the sliding bearing 7.

[0031] like Figure 2 and Figure 3As shown, a scale plate 10 is arranged outside the rotating indicator plate 8, a tooling ring 11 is arranged on one side of the scale plate 10, and a threaded hole 12 is arranged on the tooling ring 11; the lens 1 can be fixed on the tooling ring 11 through the threaded hole 12 on the tooling ring 11, and the tooling ring 11 can also be replaced by replacing the tooling ring 11 or punching additional holes on the tooling ring 11 to achieve matching of different lenses 1, effectively improving the practicality of the auxiliary measurement tool. The scale set on the scale plate 10 can be used to determine the rotation angle of the lens 1 when rotating, and the sliding bearing 7 can also be further fixed by the scale plate 10, ensuring the rotation consistency between the rotating indicator plate 8 and the sliding bearing 7.

[0032] In this embodiment, a knurled pattern is provided on the rotating indicator disk 8; by providing the knurled pattern on the rotating indicator disk 8, the friction between the rotating indicator disk 8 and the rotating indicator disk 8 can be increased during rotation, which is conducive to manual rotation of the rotating indicator disk 8 and realizes precise control of the rotation angle.

[0033] like Figure 2 and Figure 3 As shown, a mounting groove 15 is provided on the fixing plate 3, and a second fixing through hole 16 is provided at the vertex of the fixing plate 3; the transmission assembly is arranged in the mounting groove 15 on the fixing plate 3, and through the second fixing through hole 16, the lens 1 can be fixed on the five-dimensional adjustment frame through the auxiliary measurement tooling.

[0034] The specific working method of the embodiment of the utility model is: the auxiliary measurement tooling and the lens 1 are fixed on the five-dimensional adjustment frame by the fixing plate 3, and then the lens 1 is fixed on the tooling ring 11 by the fixing screws to complete a measurement, and then the rotating indicator disk is manually rotated clockwise by 8 to 90° to complete the second wave aberration measurement, and so on, the rotating indicator disk is rotated clockwise by 8 to 90° twice to complete the third and fourth wave aberration measurements. After the entire measurement is completed, the lens 1 is removed from the tooling ring 11.

[0035] In summary, the tooling provided by the utility model for assisting in measuring the wave aberration of a lens has a simple structure and low manufacturing cost. The lens 1 is rotated by means of the ratchet 5 and pawl 6 structure. The structure is simple and efficient, and there is no need to frequently disassemble the fixing screws, thereby effectively improving the production efficiency. The processing and assembly accuracy of the ratchet 5 and pawl 6 ensures the accuracy of the rotation angle of the lens 1, which helps to improve the accuracy of the measured wave aberration value.

Claims

1. A tool for assisting in measuring the wavefront aberration of a lens, comprising a lens (1) and a tool body (2) connected to the lens (1), characterized in that: The tool body (2) comprises a fixed plate (3) and a transmission assembly connected to the fixed plate (3), one end of the transmission assembly is connected to a rotating assembly, and the rotating assembly is connected to the lens (1); The transmission assembly comprises a first fixed flange (4) and a ratchet (5) arranged at one end of the first fixed flange (4), and a ratchet pawl (6) is meshedly connected to the outer side of the ratchet (5); the other end of the first fixed flange (4) is connected to the rotating assembly; The rotating assembly comprises a sliding bearing (7) connected to the first fixed flange (4), and the sliding bearing (7) is connected to a rotating indicator disk (8).

2. The tool for assisting in measuring the wave aberration of a lens according to claim 1, characterized in that: A fixed pressure ring (9) is provided between the sliding bearing (7) and the first fixed flange (4).

3. The tool for assisting in measuring the wave aberration of a lens according to claim 1, characterized in that: A scale plate (10) is arranged outside the rotating indicator plate (8).

4. The tool for assisting in measuring the wave aberration of a lens according to claim 3, characterized in that: A tooling ring (11) is provided on one side of the scale plate (10), and a threaded hole (12) is provided on the tooling ring (11).

5. The tool for assisting in measuring the wave aberration of a lens according to claim 3, characterized in that: The rotating indicator disc (8) is provided with a knurling pattern.

6. The tool for assisting in measuring the wave aberration of a lens according to claim 1, characterized in that: A second fixing flange (13) is provided on one side of the lens (1), and a first fixing through hole (14) matching the threaded hole (12) is provided on one end of the second fixing flange (13).

7. The tool for assisting in measuring the wave aberration of a lens according to claim 1, characterized in that: The fixing plate (3) is provided with a mounting groove (15), and a second fixing through hole (16) is provided at the vertex of the fixing plate (3).

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