CN203292982U - Device for machining surface of high-precision ultra-thin lens - Google Patents
Device for machining surface of high-precision ultra-thin lens Download PDFInfo
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- CN203292982U CN203292982U CN201320291912XU CN201320291912U CN203292982U CN 203292982 U CN203292982 U CN 203292982U CN 201320291912X U CN201320291912X U CN 201320291912XU CN 201320291912 U CN201320291912 U CN 201320291912U CN 203292982 U CN203292982 U CN 203292982U
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- lens
- thin lens
- die
- mould
- precision ultra
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Abstract
The utility model discloses a device for machining the surface of a high-precision ultra-thin lens. The device is characterized in that the device comprises a swing shaft, a stylus head, a die and a clamp, the swing shaft is connected with a machine tool rocker arm head, the stylus head is connected with the bottom portion of the swing shaft, the die is connected with the stylus head, the clamp plays a role in conducting supporting and fixing, the clamp is arranged under the die, and the circular arc radius of the grinding face of the die is equal to the circular arc radius of the surface to be machined of the lens. The device for machining the surface of the high-precision ultra-thin lens has the advantages that the device is simple in structure, convenient to operate, even in grinding and high in surface figure accuracy of the surface of the lens, the machining process is convenient to control, changes of thermal expansion and variations of stress can be prevented from being inconsistent, and the surface figure accuracy of the surface of the machined lens can be guaranteed.
Description
Technical field
The utility model relates to a kind of surface processing device of ultra-thin lens, belongs to optical instrument spare manufacture field.
Background technology
Development along with science and technology, the photoelectron instrument also make rapid progress the ground development upgrade and changing, optical element structure as the important critical component of photoelectron instrument has also occurred ever-changing, what have has even exceeded the conventional imagination and mentality of designing in the past, and more and more stricter and harsh to the production required precision of part, brought certain difficulty therefore for production and the processing of optical element.As ultra-thin lens actual be a kind of spherical optics part of the serious imbalance of thick and external diameter thickness proportion in a slice, its center thickness and external diameter thickness differ and reach more than 37 millimeters, thinnest part is less than one millimeter.Its processing relies on the grinding from coarse to fine of mould effects on surface to form, and the surface figure accuracy of ultra-thin lens is to be that interference fringe is weighed with light wavelength, and generally in 1-2 λ left and right, and the requirement of high-precision ultra-thin lens is even higher at 1/20-1,/10 one wavelength.Differ too large because the ultra-thin lens center is thick with external diameter thickness, eyeglass is stressed inconsistent and to produce grinding irregular in process of lapping, causes that the surface figure accuracy error is large; In the simultaneous grinding process, eyeglass makes the eyeglass internal heat expand to differ and is directed at surface figure accuracy and changes because thickness does not wait, and even causes the interference fringe distortion, can't reach required precision.Therefore, need a kind of new technical scheme to solve above-mentioned technical problem.
Summary of the invention
The surface processing device that the purpose of this utility model is to provide a kind of high-precision ultra-thin lens utilizes the lens face shape deflection precision of this processing unit (plant) processing high, thermal expansion is consistent with STRESS VARIATION, prevent the interference fringe distortion.
The technical solution adopted in the utility model is:
The surface processing device of high-precision ultra-thin lens, comprise swinging axle, the stylus head, the mould that is connected with the stylus head that are connected with the swinging axle bottom that is connected with the machining tool rocker head and work the fixture that supports fixation, described fixture be arranged at mould under, the abradant surface of described mould equates with the arc radius of to be processed of lens.
The supporting surface of described fixture equates with the arc radius of the loading surface of lens.
The utility model has the advantages that: processing unit (plant) is simple in structure, convenient operation, grinding evenly, the lens surface surface figure accuracy is high; Process is convenient to control, and can avoid the thermal expansion of eyeglass and STRESS VARIATION inconsistent, guarantees machining lens surface surface figure accuracy.
Description of drawings
Fig. 1 is the structural representation of the utility model processing unit (plant).
Fig. 2 is a certain state diagram of the utility model process.
Wherein: 1, machining tool rocker head, 2 swinging axles, 3, the stylus head, 4, mould, 5, fixture, 6, the abradant surface of mould, 7, to be processed of lens, 8, the supporting surface of fixture, the loading surface of 9 lens, 10, lens.
The specific embodiment
As shown in Figure 1, the surface processing device of high-precision ultra-thin lens, comprise the swinging axle 2 that is connected with machining tool rocker head 1, the stylus head 3 that is connected with swinging axle 2 bottoms, the mould 4 that is connected with stylus head 3 and work the fixture 5 that supports fixation, fixture 5 be arranged at mould 4 under, the abradant surface 6 of mould equates with the arc radius of to be processed 7 of lens, and the supporting surface 8 of fixture equates with the arc radius of the loading surface 9 of lens.
Add man-hour: lens 10 are fixed on the supporting surface 8 of described fixture (as shown in Figure 2), adjust machining tool rocker head 1 and aim at the lens centre of sphere, the center-of-curvature line of the axis scioptics of swinging axle 2, the abradant surface 6 that makes mould is done circular swing motion along to be processed 7 of lens, and keeping the constant pressure between lens and mould in swing process is 1kg/cm
2,, to guarantee the uniformity of grinding, guarantee simultaneously the dimensional accuracy of center joint.Add polishing fluid between the abradant surface of mould and lens to be processed in processing, the polishing fluid temperature is controlled between 20-23 ℃,, with thermal expansion and the STRESS VARIATION uniformity that guarantees processed eyeglass, prevent that processed lens surface surface figure accuracy from changing.
Claims (2)
1. the surface processing device of high-precision ultra-thin lens, it is characterized in that: comprise swinging axle, the stylus head, the mould that is connected with the stylus head that are connected with the swinging axle bottom that is connected with the machining tool rocker head and work the fixture that supports fixation, described fixture be arranged at mould under, the abradant surface of described mould equates with the arc radius of to be processed of lens.
2. the surface processing device of high-precision ultra-thin lens according to claim 1, it is characterized in that: the supporting surface of described fixture equates with the arc radius of the loading surface of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320291912XU CN203292982U (en) | 2013-05-27 | 2013-05-27 | Device for machining surface of high-precision ultra-thin lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320291912XU CN203292982U (en) | 2013-05-27 | 2013-05-27 | Device for machining surface of high-precision ultra-thin lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203292982U true CN203292982U (en) | 2013-11-20 |
Family
ID=49569020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320291912XU Expired - Lifetime CN203292982U (en) | 2013-05-27 | 2013-05-27 | Device for machining surface of high-precision ultra-thin lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203292982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175191A (en) * | 2014-08-19 | 2014-12-03 | 江苏双仪光学器材有限公司 | Conjoined pressure head for grinding of lenses |
| CN114839705A (en) * | 2021-01-31 | 2022-08-02 | 福州优恩立光电科技有限公司 | Cold machining process suitable for lens manufacturing |
-
2013
- 2013-05-27 CN CN201320291912XU patent/CN203292982U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175191A (en) * | 2014-08-19 | 2014-12-03 | 江苏双仪光学器材有限公司 | Conjoined pressure head for grinding of lenses |
| CN114839705A (en) * | 2021-01-31 | 2022-08-02 | 福州优恩立光电科技有限公司 | Cold machining process suitable for lens manufacturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |