CN100371272C - Modelling optical element production method - Google Patents
Modelling optical element production method Download PDFInfo
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- CN100371272C CN100371272C CNB2004100806226A CN200410080622A CN100371272C CN 100371272 C CN100371272 C CN 100371272C CN B2004100806226 A CNB2004100806226 A CN B2004100806226A CN 200410080622 A CN200410080622 A CN 200410080622A CN 100371272 C CN100371272 C CN 100371272C
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Abstract
The present invention relates to a manufacturing method for molding optical elements, which comprises the main steps of the manufacture of a preformed body which is a glass preformed body similar to a finished product, fire polishing: the preformed body is arranged in a press mould and is heated at a temperature above the softening point of material to cause slight crack damages on the surface of the preformed body to automatically recover, press: the preformed body experiencing the fire polishing is implemented with second-stage press molding in the same mould to conform to the objective specification, and annealing: a molded lens is shaped in the mould and the lens finished product is taken out by opening the mould after the temperature is slowly lowered to the ordinary temperature. Accordingly, spherical, aspherical or specially shaped glass optical elements of high mirror surface quality can be quickly manufactured.
Description
Technical field
The manufacture method of the relevant a kind of modelling optical element of the present invention, especially refer to a kind of glass optical component that can be used to make sphere, aspheric surface or the special shape of high mirror surface accuracy, carry out in same mould mainly that fire is thrown, pressure is made and annealed is always worked, can make the trickle knife mark or the concave point on preform surface produce the self-regeneration function, and the making that can reach aspherical mirror or other special lens fast; Can increase the precision and the economic worth thereof of this product according to this.
Background technology
The manufacture method of general existing glass optical component (eyeglass), all the mode manufacturing through repeatedly stage grinding forms, should have optical mirror slip now with lapping mode, because belong to the contact friction, so all can stay the grinding vestige on its surface, more serious with naked eyes can see very clear, cause the quality of this currently available products to be difficult to control, and then manufacturing cost also and then improved.
In addition, when making optical mirror slip with lapping mode, it is to manufacturing of the eyeglass of aspheric surface or asymmetric shape difficulty and can't reach the tolerance range of expection comparatively, not only like this, even the spherical mirror at general radius-of-curvature less (being that the number of degrees are bigger) grinds, its periphery at eyeglass also causes the situation of curvature distortion easily; Therefore, this existing manufacture method is not a best way to the manufacturing of some special lens, and causing right reality has the necessity of improvement.
In addition, in the industry cycle also there is optical mirror slip to make mode manufacturing at present with pressure, its employed material is all made with the resin material of acryl material or polymkeric substance, causing its obtained finished product (is commonly called as: glass lens) more easy to wear, wearing quality is relatively poor, its light transmission is also not as the glass optical mirror slip simultaneously, so it is not suitable for some accurate instrumentations, and the processing procedure of this manufacture method is not suitable for the use of glass optical mirror slip yet.
This case contriver is because above-mentionedly existingly make the shortcoming of optical mirror slip with lapping mode, and makes mode with pressure and make the method for glass lens and be unsuitable for making glass mirror and use, and invents out a kind of manufacture method of brand-new modelling optical element eventually.
Summary of the invention
Main purpose of the present invention is providing a kind of manufacture method of modelling optical element, its can be effectively and repair fast the glass preform surface made from Ginding process residual mill line or choice refreshments, can obtain the best mirror surface accuracy of this optical mirror slip.
Another object of the present invention is providing a kind of manufacture method of modelling optical element, and it can produce the high precision eyeglass of sphere, aspheric surface or other special shape or specification simple and easy and fast.
In order to achieve the above object, step of manufacturing of the present invention includes: a. preform, earlier make extremely glass preform (work in-process) near trimmed size in grinding and polishing (or die casting) mode; B. fire is thrown, and this preform is inserted to press in the modeling tool heat to the softening point temperature of material, allow the microgroove damage on preform surface produce self-regeneration after, cool to again and press needed working temperature when making; C. press and make, when in same mould, making previous step be cooled to working temperature and make it keep for some time, and after in this time, providing the extrusion forming for the first time of operational pressure do to arrive near goal standard, make temperature reduce to annealing temperature slowly again, and pressure to second pressure greater than operational pressure that promptly rises sharply at the beginning of cooling is done extrusion forming for the second time, and after said temperature was reduced to annealing temperature, the 3rd pressure that at this moment pressure is brought down below operational pressure carried out the pressurize operation; D. annealing, drop to normal temperature slowly in finishing the relief of extrusion forming for the second time temperature, so that eyeglass (finished product) is taken out in die sinking, and allow die pressure drop to for the previous period to be lower than the 3rd pressure status in this annealing process, so that optical mirror slip typing in it, and then pressure is discharged fully in the back segment time of annealing process.
In view of the above, can utilize this method to make the glass optical component of the high minute surface quality of sphere, aspheric surface or special shape.
Description of drawings
Fig. 1 is the block flow diagram of the manufacture method of modelling optical element of the present invention.
Fig. 2 is the working temperature in the method for the present invention and the graphic representation of pressure.
Embodiment
At first see also Figure 1 and Figure 2, the manufacture method of modelling optical element of the present invention, this making step includes:
A. preform is made extremely glass preform near trimmed size in the grinding and polishing mode earlier;
B. fire is thrown, and this preform is inserted to press in the modeling tool heat to T
1(more than the softening temperature of material), allow the microgroove damage on preform surface produce self-regeneration after, cool to again and press needed work temperature when making
2
C. press and make, in same mould, make previous step be cooled to work temperature
2The time and make it keep for some time, and in this time, provide an operational pressure P
1Do extrusion forming for the first time near behind the goal standard, make temperature reduce to annealing temperature T slowly again
3, and pressure to the second pressure P that at the beginning of cooling, promptly rises sharply
2(greater than P
1More than) do extrusion forming for the second time, and reduce to annealing temperature T at said temperature
3After, at this moment pressure is reduced to the 3rd pressure P
3(be lower than P
1) carry out the pressurize operation;
D. annealing, extrusion forming relief temperature drops to normal temperature slowly in finishing for the second time, so that eyeglass is taken out in die sinking, and allows die pressure drop to for the previous period to be lower than the 3rd pressure P in this annealing process
3State so that optical mirror slip typing in it, and then pressure is discharged fully in the back segment time of annealing process.
In the and for example above-mentioned manufacture method, it also can be according to optical element to the residual stress tolerance range, and annealing steps therein, change (acceleration) its cooling rate, and the physical phenomenon and the step of residual stress are eliminated in formation, replace annealing steps with tempering step, can reach intended purposes of the present invention equally.
When implementing according to above-mentioned manufacture method, it at first utilizes in the step of implementing the fire throwing, make preform softening and make its surface produce the ion dissociation, to reach the effect of its surface fine crack of self-regeneration, make its optical articles, and can save man-hour comparatively easily and fast with high-quality specular surface; Secondly, present method utilizes mould to press the mode of making to produce can accurately reach the optical mirror slip of goal standard, and can break through general existing Ginding process to make the glass optical component of sphere, aspheric surface or special shape simply, fast.So manufacture method of the present invention also can effectively reduce manufacturing cost, with the increase competitiveness of product.
Claims (2)
1. the manufacture method of a modelling optical element is characterized in that, step includes:
A. preform is made extremely glass preform near trimmed size in the grinding and polishing mode earlier;
B. fire is thrown, and this preform is inserted to press in the modeling tool heat to the softening point temperature (T of material
1) more than, allow the microgroove damage on preform surface produce self-regeneration after, cool to again and press needed working temperature (T when making
2);
C. press and make, in same mould, make previous step be cooled to working temperature (T
2) time and make it keep for some time, and in this time, provide an operational pressure (P
1) do extrusion forming for the first time near behind the goal standard, make temperature reduce to annealing temperature (T slowly again
3), and the pressure that promptly rises sharply at the beginning of cooling is extremely greater than operational pressure (P
1) the second pressure (P
2) do extrusion forming for the second time, and reduce to annealing temperature (T at said temperature
3) after, at this moment pressure is brought down below operational pressure (P
1) the 3rd pressure (P
3) carry out the pressurize operation;
D. annealing, extrusion forming relief temperature drops to normal temperature slowly in finishing for the second time, so that eyeglass is taken out in die sinking, and allows die pressure drop to for the previous period to be lower than the 3rd pressure (P in this annealing process
3) state so that optical mirror slip typing in it, and then pressure is discharged fully in the back segment time of annealing process.
2. the manufacture method of modelling optical element as claimed in claim 1 is characterized in that, described annealing steps can replace by tempering step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100806226A CN100371272C (en) | 2004-09-29 | 2004-09-29 | Modelling optical element production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100806226A CN100371272C (en) | 2004-09-29 | 2004-09-29 | Modelling optical element production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1754846A CN1754846A (en) | 2006-04-05 |
| CN100371272C true CN100371272C (en) | 2008-02-27 |
Family
ID=36688442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100806226A Expired - Fee Related CN100371272C (en) | 2004-09-29 | 2004-09-29 | Modelling optical element production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371272C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100872A (en) * | 2006-10-19 | 2008-05-01 | Hoya Corp | Method of manufacturing glass preform and method of manufacturing optical element |
| CN100422786C (en) * | 2006-12-01 | 2008-10-01 | 苏州大学 | Manufacturing method of aspheric optical element |
| CN101555091B (en) * | 2009-05-15 | 2011-10-26 | 四川省丹棱明宏光学有限责任公司 | Thermal processing molding method of optical imaging glass |
| CN103214161B (en) * | 2013-05-06 | 2016-10-05 | 吴佑林 | A kind of non-isothermal mould pressing method for glass optical component |
| CN105819672B (en) * | 2016-03-21 | 2018-04-06 | 广东健诚高科玻璃制品股份有限公司 | The smooth domestic glass ceramic production methods in surface |
| CN109206000B (en) * | 2017-07-03 | 2021-01-19 | 比亚迪股份有限公司 | Curved glass and forming method thereof |
| CN108689590A (en) * | 2018-06-26 | 2018-10-23 | 中国建筑材料科学研究总院有限公司 | The method of chalcogenide glass precision moulded formation |
| CN113562961B (en) * | 2021-07-12 | 2022-12-20 | 三瑞科技(江西)有限公司 | Low-defective-rate glass insulator compression molding process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340467A (en) * | 2000-09-01 | 2002-03-20 | 保谷株式会社 | Method and equipment for mould-pressed glass product |
| CN1345267A (en) * | 1999-02-24 | 2002-04-17 | 罗克赞恩·F·怀特 | Compression molding of optical lenses |
| CN1427767A (en) * | 2000-03-30 | 2003-07-02 | Q2100有限公司 | Apparatus and system for production of plastic lenses |
-
2004
- 2004-09-29 CN CNB2004100806226A patent/CN100371272C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345267A (en) * | 1999-02-24 | 2002-04-17 | 罗克赞恩·F·怀特 | Compression molding of optical lenses |
| CN1427767A (en) * | 2000-03-30 | 2003-07-02 | Q2100有限公司 | Apparatus and system for production of plastic lenses |
| CN1340467A (en) * | 2000-09-01 | 2002-03-20 | 保谷株式会社 | Method and equipment for mould-pressed glass product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1754846A (en) | 2006-04-05 |
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Granted publication date: 20080227 Termination date: 20110929 |