Eccentricity measuring device for aspheric lens

Abstract

The utility model provides an aspheric lens eccentricity measuring device, which comprises a measuring table, supporting blocks, an electric telescopic rod, a light path frame plate, a connecting plate, an autocollimator, an adjustable measuring vertical fixing frame structure and an adjustable rotating reflecting frame structure, and the supporting blocks are respectively fixed at four corners of the bottom end of the measuring table through bolts. According to the utility model, the first fixing frame, the sliding hole, the sliding block, the arc-shaped fixing plate, the L-shaped guide rod and the vertical measuring bead are arranged, so that a straight ruler or an angle square can be used to contact the aspherical lens and the L-shaped guide rod in the measuring process, and the influence on the measuring accuracy after the lens is inclined in the measuring process can be prevented; through arrangement of a connecting pipe, a rotating rod, a second fixing frame, a refractor, a connecting pipe, an adjusting column, a light pipe emitter and a wing-shaped bolt, the angle of the light pipe emitter can be adjusted in the measurement process, and the purpose of measurement is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of eccentricity measuring equipment for aspheric lenses, and in particular relates to an eccentricity measuring device for aspheric lenses. Background Art

[0002] At present, domestic aspheric lens manufacturers mainly use micrometers for contact measurement when measuring the eccentricity of mass-produced aspheric lenses, which often damages the surface of the parts. If a protective layer is added between the probe of the micrometer and the contact surface of the aspheric surface, the measurement accuracy cannot be guaranteed due to the elasticity of paper. The working principle of the eccentricity measuring device of the aspheric lens is: when the lens to be tested rotates around the mechanical rotation axis, the displacement measuring device records the two-dimensional coordinate change of the laser spot reflected by the aspheric surface on the CCD, and calculates the corresponding eccentricity according to the change and the aspheric surface shape. The existing eccentricity measuring device of the aspheric lens is easy to tilt when fixing the aspheric lens during the measurement process, which affects the measurement results and the problem that the angle of the light tube emitter cannot be adjusted according to the measurement needs during the measurement process. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an eccentricity measuring device for an aspheric lens. By improving the fixing mechanism of the aspheric lens during the measurement process, the aspheric lens is prevented from tilting during the fixing process and affecting the measurement work, and the light-emitting mechanism is improved during the measurement process to facilitate the purpose of angle adjustment during the measurement process.

[0004] A device for measuring the eccentricity of an aspheric lens comprises a measuring platform, wherein support blocks are bolted to the four corners of the bottom end of the measuring platform; electric telescopic rods are bolted to the left and right sides of the upper end of the measuring platform; the upper ends of the electric telescopic rods are respectively fixed to the middle positions of the bottom ends of optical path frame plates; a connecting plate is bolted to the right side of the bottom end of the optical path frame plate arranged on the right side; an autocollimator is fixed to the middle position of the upper end of the connecting plate, characterized in that an adjustable measuring vertical fixing frame structure is arranged between the optical path frame plates; and an adjustable rotating reflecting frame structure is arranged on the left side of the upper end of the measuring platform.

[0005] Preferably, the adjustable measuring vertical fixing frame structure includes a first fixing frame, and sliding holes are respectively opened in the middle positions of the upper and lower ends of the first fixing frame; sliding blocks are respectively arranged on the inner walls of the upper and lower ends of the first fixing frame; the sliding blocks are respectively bolted to the middle position of the outer wall of the arc-shaped fixing plate; an L-shaped guide rod is bolted to the middle position of the right side of the arc-shaped fixing plate; and vertical measuring beads are respectively inlaid on the top right side of the L-shaped guide rod.

[0006] Preferably, the adjustable rotating reflector frame structure includes a connecting tube, the upper end of which is internally threadedly connected to a rotating rod; the upper end of the rotating rod is bolted to the middle position of the bottom end of the second fixed frame; the upper end of the second fixed frame is internally pin-connected to a refractor; the right upper part of the connecting tube is bolted to a connecting tube; the right end of the connecting tube is internally threadedly connected to an adjustment column; a light tube emitter is arranged inside the right end of the adjustment column; and wing bolts are respectively passed through the right side of the front surface and the right side of the rear surface of the adjustment column.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. In the utility model, the arrangement of the first fixing frame, the sliding hole, the sliding block, the arc-shaped fixing plate, the L-shaped guide rod and the vertical measuring bead is conducive to contacting the aspheric lens and the L-shaped guide rod with a ruler or a square during the measurement process, so as to prevent the lens from tilting during the measurement process and affecting the measurement accuracy.

[0009] 2. In the utility model, the arrangement of the connecting tube, the rotating rod, the second fixing frame, the refractor, the connecting tube, the adjusting column, the light tube emitter and the wing bolt is conducive to adjusting the angle of the light tube emitter during the measurement process, so as to facilitate the purpose of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the adjustable measuring vertical fixing frame structure of the utility model.

[0012] Figure 3 It is a structural schematic diagram of the adjustable rotating reflection frame structure of the utility model.

[0013] In the figure:

[0014] 1. Measuring table; 2. Support block; 3. Electric telescopic rod; 4. Optical path frame; 5. Connecting plate; 6. Autocollimator; 7. Adjustable measuring vertical fixing frame structure; 71. First fixing frame; 72. Sliding hole; 73. Sliding block; 74. Arc fixing plate; 75. L-shaped guide rod; 76. Vertical measuring bead; 8. Adjustable rotating reflector frame structure; 81. Connecting pipe; 82. Rotating rod; 83. Second fixing frame; 84. Refractor; 85. Connecting pipe; 86. Adjusting column; 87. Light tube emitter; 88. Wing bolt. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 and attached Figure 2As shown, a device for measuring the eccentricity of an aspheric lens comprises a measuring platform 1, a support block 2, an electric telescopic rod 3, an optical path frame plate 4, a connecting plate 5, an autocollimator 6, an adjustable measuring vertical fixing frame structure 7 and an adjustable rotating reflection frame structure 8, wherein the four corners of the bottom end of the measuring platform 1 are respectively bolted with support blocks 2; the left and right sides of the upper end of the measuring platform 1 are respectively bolted with electric telescopic rods 3; the upper ends of the electric telescopic rods 3 are respectively fixed to the middle position of the bottom end of the optical path frame plate 4; the right side of the bottom end of the optical path frame plate 4 arranged on the right side is bolted with a connecting plate 5; the middle position of the upper end of the connecting plate 5 is fixed with an autocollimator 6; an adjustable measuring vertical fixing frame structure 7 is arranged between the optical path frame plates 4; an adjustable rotating reflection frame structure 8 is arranged on the left side of the upper end of the measuring platform 1; the adjustable measuring vertical fixing frame structure 7 comprises a first fixing frame 71, a sliding hole 72, a sliding block 73, an arc-shaped fixing plate 74, L-shaped guide rod 75 and vertical measuring bead 76, the middle positions of the upper and lower ends of the first fixing frame 71 are respectively provided with sliding holes 72; the inner walls of the upper and lower ends of the first fixing frame 71 are respectively provided with sliding blocks 73; the sliding blocks 73 are respectively bolted to the middle position of the outer wall of the arc-shaped fixing plate 74; the L-shaped guide rod 75 is bolted to the middle position of the right side of the arc-shaped fixing plate 74; the top of the right side of the L-shaped guide rod 75 is respectively inlaid with vertical measuring beads 76; when measuring, the measuring platform 1 is placed in a suitable position, and the external power supply is connected using an external wire, and then the aspheric lens to be measured is placed between the arc-shaped fixing plates 74, and the arc-shaped fixing plates 74 are pushed to a suitable position according to the detection needs, and the vertical measuring bead 76 is observed before measurement, and then a ruler or angle ruler and other tools are used to contact the lens and the L-shaped guide rod 75 to prevent the lens from tilting during the measurement and affecting the measurement results.

[0016] In this embodiment, combined with the Figure 3As shown, the adjustable rotating reflector frame structure 8 includes a connecting tube 81, a rotating rod 82, a second fixed frame 83, a refractor 84, a connecting tube 85, an adjustment column 86, a light tube emitter 87 and a wing bolt 88. The upper end of the connecting tube 81 is internally threadedly connected with the rotating rod 82; the upper end of the rotating rod 82 is bolted to the middle position of the bottom end of the second fixed frame 83; the upper end of the second fixed frame 83 is internally pin-connected with the refractor 84; the upper right part of the connecting tube 81 is bolted with the connecting tube 85; The right end of the connecting tube 85 is internally threadedly connected with an adjustment column 86; the right end of the adjustment column 86 is internally provided with a light tube emitter 87; the right side of the front surface and the right side of the rear surface of the adjustment column 86 are respectively penetrated by wing bolts 88; after fixing the aspheric lens, the rotating rod 82 is rotated to adjust the height of the second fixing frame 83 and the refractor 84, and the angle of the refractor 84 is adjusted, and then the wing bolt 88 is loosened to adjust the angle of the light tube emitter 87, so as to facilitate the purpose of angle adjustment during the measurement process, thereby completing the measurement work.

[0017] In this embodiment, specifically, the optical path frame plate 4 is a rectangular stainless steel frame; the autocollimator 6 is arranged at the middle position on the right side of the optical path frame plate 4 arranged on the right side.

[0018] In the present embodiment, specifically, bolts are slidably penetrated inside the sliding hole 72, and the bolts are threadedly connected to the middle positions inside the upper and lower ends of the sliding block 73; aspheric lenses to be detected are arranged between the arc-shaped fixing plates 74; and through holes are respectively opened at the middle positions of the left and right ends of the first fixing frame 71.

[0019] In this embodiment, specifically, the optical path frame plate 4 is bolted to the middle position of the left and right ends of the first fixing frame 71 respectively, and the optical path frame plate 4 is respectively arranged corresponding to the through holes opened at the left and right ends of the first fixing frame 71.

[0020] In this embodiment, specifically, the wing bolts 88 are threadedly connected to the middle position of the front surface and the middle position of the rear surface of the light pipe emitter 87 respectively.

[0021] In this embodiment, specifically, the connecting pipe 81 is bolted to the middle position on the left side of the upper end of the measuring platform 1 .

[0022] How it works

[0023] In the utility model, when measuring, the measuring platform 1 is placed in a suitable position, and an external power supply is connected using an external wire, then the aspheric lens to be measured is placed between the arc fixing plates 74, and the arc fixing plates 74 are pushed to move to a suitable position according to the detection needs, and the vertical measuring beads 76 are observed before measurement, and then a tool such as a ruler or a square is used to contact the lens and the L-shaped guide rod 75 to prevent the lens from tilting during the measurement and affecting the measurement result. After the aspheric lens is fixed, the rotating rod 82 is rotated to adjust the height of the second fixing frame 83 and the refractor 84, and the angle of the refractor 84 is adjusted, and then the wing bolt 88 is loosened, and the angle of the light tube emitter 87 is adjusted, so as to facilitate the purpose of angle adjustment during the measurement process, thereby completing the measurement work.

[0024] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. An eccentricity measuring device for an aspheric lens, comprising a measuring platform (1), wherein support blocks (2) are bolted to the four corners of the bottom end of the measuring platform (1); electric telescopic rods (3) are bolted to the left and right sides of the upper end of the measuring platform (1); the upper ends of the electric telescopic rods (3) are respectively fixed to the middle position of the bottom end of an optical path frame plate (4); a connecting plate (5) is bolted to the right side of the bottom end of the optical path frame plate (4) arranged on the right side; an autocollimator (6) is fixed to the middle position of the upper end of the connecting plate (5); characterized in that: An adjustable measuring vertical fixing frame structure (7) is arranged between the optical path frame plates (4) in the eccentricity measuring device for an aspherical lens; and an adjustable rotating reflecting frame structure (8) is arranged on the left side of the upper end of the measuring platform (1).

2. The eccentricity measuring device of an aspheric lens according to claim 1, characterized in that: The adjustable measuring vertical fixing frame structure (7) comprises a first fixing frame (71), wherein sliding holes (72) are respectively provided at the middle positions of the upper and lower ends of the first fixing frame (71); sliding blocks (73) are respectively provided at the inner walls of the upper and lower ends of the first fixing frame (71); the sliding blocks (73) are respectively bolted to the middle position of the outer wall of the arc-shaped fixing plate (74); an L-shaped guiding rod (75) is bolted to the middle position of the right side of the arc-shaped fixing plate (74); and a vertical measuring bead (76) is respectively inlaid at the top of the right side of the L-shaped guiding rod (75).

3. The eccentricity measuring device of an aspheric lens according to claim 1, characterized in that: The adjustable rotatable reflector frame structure (8) comprises a connecting tube (81), the upper end of the connecting tube (81) is internally threadedly connected to a rotating rod (82); the upper end of the rotating rod (82) is bolted to the middle position of the bottom end of the second fixing frame (83); the upper end of the second fixing frame (83) is internally pin-connected to a refractor (84); the upper right part of the connecting tube (81) is bolted to a connecting tube (85); the right end of the connecting tube (85) is internally threadedly connected to an adjustment column (86); the right end of the adjustment column (86) is internally provided with a light tube emitter (87); the right side of the front surface and the right side of the rear surface of the adjustment column (86) are respectively penetrated by wing bolts (88).

4. The eccentricity measuring device of an aspheric lens according to claim 2, characterized in that: The optical path frame plate (4) is bolted to the middle position of the left and right ends of the first fixing frame (71), and the optical path frame plate (4) is arranged corresponding to the through holes opened at the left and right ends of the first fixing frame (71).

5. The eccentricity measuring device of an aspheric lens according to claim 3, characterized in that: The connecting pipe (81) is bolted to the middle position on the left side of the upper end of the measuring platform (1).

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