CN109623558A - A kind of method for precisely forming of off-axis aspheric surface lens - Google Patents
A kind of method for precisely forming of off-axis aspheric surface lens Download PDFInfo
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- CN109623558A CN109623558A CN201811471952.6A CN201811471952A CN109623558A CN 109623558 A CN109623558 A CN 109623558A CN 201811471952 A CN201811471952 A CN 201811471952A CN 109623558 A CN109623558 A CN 109623558A
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- lens
- aspheric surface
- surface lens
- axis
- axis aspheric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a kind of method for precisely forming of off-axis aspheric surface lens, process flows are as follows: lens coating protective paint, rigid fixture bonding, inner circle cutting machine, which are cut, to be separated, take next half circle lens, accurate milling off-axis aspheric surface lens, another pellicle mirror of bonding, accurate milling off-axis aspheric surface lens etc..Invention is solved in such glass material non-spherical lens molding process in technique because of position inaccurate easily generates optical axis deviation and inclination causes lens to be scrapped result；Invention is bonded using precision location clamp, effectively prevents movement of the lens in forming process, solves the problems, such as that usual method is also easy to produce scratch and destroys surface accuracy.Realize the effect that quality is stable, efficiency improves and cost reduces in batch production.
Description
Technical field
The invention belongs to optical element manufacturing technology fields, are related to a kind of method for precisely forming of off-axis aspheric surface lens,
Precise forming after being mainly used for the off-axis double surface non-spherical lens grinding and polishing of rectangle.
Background technique
Currently, for the optical manufacturing of off-axis aspheric surface lens, main means still first carry out the corase grinding of lens, fine grinding and
Polishing finally carries out precise forming according still further to outer dimension.Invent the off-axis aspheric surface precise forming being related to, technical process
Are as follows:
Under normal conditions, round off-axis aspheric surface lens can be processed using centering-edging machine, and edge special-shaped lens then need
Design reasonable tooling secondary process.Since part to be processed is the double surface non-spherical lens for having been completed polishing, it is subsequent at
Surface damage is easily generated in type process；Furthermore inventing the off-axis aspheric surface being related to is two to off-axis rectangle lens,
And off-axis lens Y-direction edge only has 0.439mm far from lens axis, and inner circle cutting machine saw blade is with a thickness of 0.3mm, using other sides
Method molding, can not be able to achieve invention achievement, i.e. a circular aspheric lenses remove two rectangle off-axis aspheric surface lens.
Summary of the invention
(1) goal of the invention
The object of the present invention is to provide a kind of method for precisely forming of off-axis aspheric surface lens, double off axis for rectangle
The precise forming of face non-spherical lens, and ensure the position precision and surface face form quality amount of off-axis aspheric surface lens.
(2) technical solution
In order to solve the above technical problem, the present invention provides the method for precisely forming of off-axis aspheric surface lens comprising with
Lower step:
Step 1: lens protection by paints and lacquers
Good two surfaces of circular aspheric lenses of grinding and polishing are coated protective paint, pastes protect on protection lacquer painting again later
Retaining tape；
Step 2: bonding
Circular aspheric lenses through overprotection are bonded on rigid fixture adhesion die；
Step 3: cutting
Adhesion die is fixed on inner circle cutting machine and is cut, circular aspheric lenses is made to be divided into two from centre, is added
It is aspherical that one of semicircle is removed after heat；
Step 4: accurate milling
It is fixed on numerical control machining center workbench the aspherical adhesion die of another semicircle is had, it is aspherical to semicircle
Carry out milling；
Step 5: lower wall and upper disk
First off-axis aspheric surface lens that milling is formed well heat lower wall, while another semicircle of upper disk is aspherical；
Step 6: accurate milling
The 4th step is repeated, second off-axis aspheric surface lens milling is completed；
Step 7: examining
With the outer dimension of universal tool-measuring microscope measurement off-axis aspheric surface lens；
Step 8: packaging
Enter packing box after qualified parts camera lens paper wrapper.
(3) beneficial effect
The method for precisely forming of off-axis aspheric surface lens provided by above-mentioned technical proposal, to guarantee to make to complete grinding and polishing
The surface accuracies of circular aspheric lenses be not damaged in precise forming process, it is often more important that guarantee molding off-axis non-
Spherical lens is in strict conformity with drawing technical requirements, the i.e. optical axis and its parent circular aspheric lenses of realization off-axis aspheric surface lens
Optical axis coincidence and gradient within the tolerance of drawing requirement.Invention devises rigid fixture and is accurately positioned bonding；Inner circle is cut
Cutting mill cutting separation；It is rectangular off-axis to be finally completed a circular aspheric lenses acquirement two for numerically controlled processing equipment precision milling
The optimum of non-spherical lens；The present invention is solved in technique in such glass material non-spherical lens molding process
Because of the result that position inaccurate easily generates optical axis deviation and inclination causes lens to be scrapped；Invention is viscous using precision location clamp
It connects, effectively prevents movement of the lens in forming process, solve usual method and be also easy to produce asking for scratch destruction surface accuracy
Topic.Realize the effect that quality is stable, efficiency improves and cost reduces in batch production.
Detailed description of the invention
Fig. 1, process flow chart are the main technical schemes block diagrams of invention.
Fig. 2, off-axis aspheric surface lens exemplary diagram.Wherein, I is perspective view, and II is main view, and III is side view.
Fig. 3, off-axis aspheric surface lens bonding cutting constitutional diagram.
Fig. 4, off-axis aspheric surface project shaping schematic view.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
The precise forming of double surface non-spherical lens off-axis for rectangle is accurately positioned using rigid fixture and is bonded, within
Circle cutting machine cutting separation, then it is aided with diamond fixed abrasive material grinding tool precision milling with numerically controlled processing equipment, it is finally completed one
Circular aspheric lenses obtain the result of two rectangular off-axis aspheric surface lens.
Specifically, shown in referring to Fig.1, the method for precisely forming of off-axis aspheric surface lens of the present invention the following steps are included:
Step 1: lens protection by paints and lacquers
Good two surfaces of circular aspheric lenses of grinding and polishing are coated protective paint, pastes protect on protection lacquer painting again later
Retaining tape；
Required equipment: workbench.
Step 2: bonding
Circular aspheric lenses through overprotection are bonded on rigid fixture adhesion die.
Adhesion die be it is cylindric, top curve surface matches with circular aspheric lenses concave surface.
Referring to Fig. 3, adhesion die periphery is arranged with a positioning ring, and the prominent adhesion die periphery of positioning ring guarantees round
Accurate concentric locating of the non-spherical lens on adhesion die.
Required equipment: electric hot plate, workbench.
Step 3: cutting
Adhesion die is fixed on inner circle cutting machine and is cut, circular aspheric lenses is made to be divided into two from centre, is added
It is aspherical that one of semicircle is removed after heat.
Referring to Fig. 3, adhesion die sphere centre is provided with the cutting function slot of a 1mm width, convenient for cast-cutting saw slice in metal
Adhesion die center passes through without generating interference.
Required equipment: inner circle cutting machine.
Step 4: accurate milling
It is fixed on numerical control machining center workbench the aspherical adhesion die of another semicircle is had, it is aspherical to semicircle
Carry out milling.
Referring to Fig. 4, milling function trough has been pre-machined with respect to off-axis aspheric surface lens off-axis position in adhesion die, is milling
Diamond fixed abrasive material grinding tool is not contacted with metal adhesive mould in the process.
Required equipment: numerically controlled processing equipment.
Step 5: lower wall and upper disk
First off-axis aspheric surface lens that milling is formed well heat lower wall, while another semicircle of upper disk is aspherical；
Referring to Fig. 4, semicircle aspherical requirements covering milling function trough when upper disk.
Required equipment: electric hot plate, workbench.
Step 6: accurate milling
The 4th step is repeated, second off-axis aspheric surface lens milling is completed；
Required equipment: numerically controlled processing equipment.
Step 7: examining
With the outer dimension of universal tool-measuring microscope measurement off-axis aspheric surface lens；
Step 8: packaging
Enter packing box after qualified parts camera lens paper wrapper.
Required equipment: workbench.
The present invention devises rigid fixture and is accurately positioned bonding lens, inner circle cutting machine heartcut, numerical control machining center
Accurate milling completes the result that a circular aspheric lenses obtain two rectangular off-axis aspheric surface lens.Both ensure that from
Precision and the outer dimension requirement that axis lens on light axis deviates, also ensure the polishing grade of lens surface precision.It achieves very
Good economy and technical benefits.
Through retrieving, the public technology report same or similar with this process is not found.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of method for precisely forming of off-axis aspheric surface lens, which comprises the following steps:
Step 1: lens protection by paints and lacquers
Good two surfaces of circular aspheric lenses of grinding and polishing are coated protective paint, paste protective glue on protection lacquer painting again later
Band；
Step 2: bonding
Circular aspheric lenses through overprotection are bonded on rigid fixture adhesion die；
Step 3: cutting
Adhesion die is fixed on inner circle cutting machine and is cut, circular aspheric lenses is made to be divided into two from centre, after heating
It is aspherical to remove one of semicircle；
Step 4: accurate milling
It is fixed on numerical control machining center workbench the aspherical adhesion die of another semicircle is had, progress aspherical to semicircle
Milling；
Step 5: lower wall and upper disk
First off-axis aspheric surface lens that milling is formed well heat lower wall, while another semicircle of upper disk is aspherical；
Step 6: accurate milling
The 4th step is repeated, second off-axis aspheric surface lens milling is completed；
Step 7: examining
With the outer dimension of universal tool-measuring microscope measurement off-axis aspheric surface lens；
Step 8: packaging
Enter packing box after qualified parts camera lens paper wrapper.
2. the method for precisely forming of off-axis aspheric surface lens as described in claim 1, which is characterized in that in the second step,
Adhesion die be it is cylindric, top curve surface matches with circular aspheric lenses concave surface.
3. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 2, which is characterized in that in the second step,
Adhesion die periphery is arranged with a positioning ring, and the prominent adhesion die periphery of positioning ring guarantees that circular aspheric lenses are being bonded
Concentric locating on mould.
4. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 3, which is characterized in that in the third step,
Adhesion die sphere centre is provided with the cutting function slot of a 1mm width.
5. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 4, which is characterized in that in the 4th step,
Milling function trough has been pre-machined with respect to off-axis aspheric surface lens off-axis position in adhesion die.
6. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 5, which is characterized in that in the first step
Lens protection by paints and lacquers carries out on the table.
7. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 6, which is characterized in that the second step operation
It carries out on the table, while also needing electric hot plate.
8. the method for precisely forming of off-axis aspheric surface lens as claimed in claim 7, which is characterized in that the 5th step operation
It carries out on the table, while also needing electric hot plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811471952.6A CN109623558B (en) | 2018-12-04 | 2018-12-04 | Precision forming method of off-axis aspheric lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471952.6A CN109623558B (en) | 2018-12-04 | 2018-12-04 | Precision forming method of off-axis aspheric lens |
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| CN109623558A true CN109623558A (en) | 2019-04-16 |
| CN109623558B CN109623558B (en) | 2020-04-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002493A (en) * | 2019-11-26 | 2020-04-14 | 天津津航技术物理研究所 | Diamond turning method for large-caliber germanium single crystal lens |
| CN112157497A (en) * | 2020-09-24 | 2021-01-01 | 天津津航技术物理研究所 | Precision grinding and polishing method for inner hole of large-diameter glass cylindrical window |
| CN116442055A (en) * | 2023-04-07 | 2023-07-18 | 北京创思工贸有限公司 | Wedge lens processing method |
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| CN107188401A (en) * | 2017-05-17 | 2017-09-22 | 莱特巴斯光学仪器（镇江）有限公司 | The processing tool and processing method of a kind of on-right angle special-shaped lens |
| CN109366291A (en) * | 2018-11-23 | 2019-02-22 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of high-precision processing method of Schmidt prism |
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| EP0739683A1 (en) * | 1995-04-27 | 1996-10-30 | Armando Rattaro | Workpiece holder, particularly adapted for holding eyeglasses lenses |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111002493A (en) * | 2019-11-26 | 2020-04-14 | 天津津航技术物理研究所 | Diamond turning method for large-caliber germanium single crystal lens |
| CN111002493B (en) * | 2019-11-26 | 2022-03-29 | 天津津航技术物理研究所 | Diamond turning method for large-caliber germanium single crystal lens |
| CN112157497A (en) * | 2020-09-24 | 2021-01-01 | 天津津航技术物理研究所 | Precision grinding and polishing method for inner hole of large-diameter glass cylindrical window |
| CN116442055A (en) * | 2023-04-07 | 2023-07-18 | 北京创思工贸有限公司 | Wedge lens processing method |
| CN116442055B (en) * | 2023-04-07 | 2024-01-30 | 北京创思工贸有限公司 | Wedge lens processing method |
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| CN109623558B (en) | 2020-04-24 |
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