CN204347283U - A kind of combination non-spherical lens - Google Patents
A kind of combination non-spherical lens Download PDFInfo
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- CN204347283U CN204347283U CN201420855878.9U CN201420855878U CN204347283U CN 204347283 U CN204347283 U CN 204347283U CN 201420855878 U CN201420855878 U CN 201420855878U CN 204347283 U CN204347283 U CN 204347283U
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- compensating plate
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Abstract
A kind of combination non-spherical lens, comprise at least one spherical glass lens and compensating plate, described spherical glass lens has at least one side to be sphere curved surface, the one side of described compensating plate is non-spherical surface, described spherical glass lens and the substrate of compensating plate are freely separated, and spherical glass lens and compensating plate combination fixed by adjustable clamping structure.Adopt the technical solution of the utility model, ensure that optical element can not be subject to the impact of the stress caused because the material thermal expansion coefficient that the factors such as temperature variation cause differs, ensure that aspheric function is intact.
Description
Technical field
The utility model relates to optical field, refers in particular to a kind of combination non-spherical lens.
Background technology
The relative non-spherical lens of spherical lens, job operation is ripe, and manufacture craft is simple, but application is complicated, needs to correct numerous aberrations, may need various lens combination, cannot realize the miniaturization of camera lens in optical system.Non-spherical lens has unique advantage relative to spherical lens, optical quality can be improved, reduce optical element, there is higher resolution, can design cost etc. be reduced, therefore be widely applied in fields such as optical instruments, make the miniaturization of camera lens become possibility simultaneously.Fibre-optical splice of such as digital camera, zoom lens, satellite infrared telescope, television camera tube, bar code reading head, Medical Instruments, optical fiber communication etc., non-spherical lens has a wide range of applications.
But the structure of current non-spherical lens mainly utilizes injection molding non-spherical lens to combine, aspheric surface rete and substrate glasses material combine, when the temperature varies, substrate of glass and top layer aspheric surface rete thermal expansivity inconsistent thus produce STRESS VARIATION, top layer aspheric surface rete can be caused to be extruded or to stretch and change aspheric curvature, thus destroy the optical property of combination non-spherical lens.
Utility model content
The utility model solves above-mentioned technical matters, provides a kind of combination non-spherical lens.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of combination non-spherical lens, comprise at least one spherical glass lens and compensating plate, described spherical glass lens has at least one side to be sphere curved surface, the one side of described compensating plate is non-spherical surface, described spherical glass lens and the substrate of compensating plate are freely separated, and spherical glass lens and compensating plate combination fixed by adjustable clamping structure.
Further, described spherical glass lens adopts plano-convex, biconvex, concavo-convex or double-concave structure.
Further, described compensating plate adopt plano-convex or the moon dental structure.
Further, described compensating plate adopts optical plastic, optical glass or crystal.
Further, described compensating plate adopts that photoetching technique is shaping, glass hot-pressing technique is shaping, optical clear moulded of plastics material or optical precision machine-shaping.
Adopt the beneficial effect of the technical solution of the utility model:
1. this combination non-spherical lens is separate type, and the compensating plate with non-spherical surface adopts optical plastic, because optical plastic is contrary with the refractive index temperature Changing Pattern of optical glass, temperature compensation can be carried out, ensure that optical element can not be subject to the impact of the stress caused because the material thermal expansion coefficient that the factors such as temperature variation cause differs, therefore ensure that aspheric function is intact;
2. the aspheric surface compensating plate of this Separated type combination non-spherical lens can design and be processed into particular surface profile, realizes aberration correction;
3. the aspheric surface compensating plate of this Separated type combination non-spherical lens, can design and be processed into diffractive optical surfaces, by methods such as holographic or photoetching, the micro optical structure such as grating or lenticule is fabricated on aspheric surface compensating plate, compensating plate is made to have negative dispersion effect, positive dispersion effect compensating with optical glass, realizes chromatic aberration correction.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is that the utility model embodiment one combines schematic diagram;
Fig. 2 is that the utility model embodiment two combines schematic diagram;
Fig. 3 is that the utility model embodiment three combines schematic diagram;
Fig. 4 is that the utility model embodiment four combines schematic diagram;
Fig. 5 is that the utility model embodiment five combines schematic diagram;
Fig. 6 is that the utility model embodiment six combines schematic diagram;
Fig. 7 is that the utility model compensating plate adopts photoetching technique shaping schematic view.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
A kind of combination non-spherical lens, comprise at least one spherical glass lens 10 and compensating plate 20, described spherical glass lens 10 has at least one side to be sphere curved surface 11, the one side of described compensating plate 20 is non-spherical surface 21, described spherical glass lens 10 and the substrate of compensating plate 20 are freely separated, by adjustable clamping structure, spherical glass lens 10 and compensating plate 20 are combined fixing, embodiment shown in Fig. 1 to Fig. 5 is that spherical glass lens 10 adopts plano-convex, biconvex, the array mode of concavo-convex or double-concave structure and compensating plate 20, spherical glass lens 10 can adopt one or more, combine according to actual needs, but be not limited to this, Fig. 1 to embodiment illustrated in fig. 6 be the array mode of the compensating plate 20 of one or more spherical glass lens 10 and plano-convex exterior shape or crescent shape, but be not limited to this.
Compensating plate shown in Fig. 7 adopts photoetching technique shaping, adopt the method for array, a photoetching can produce the compensating plate 20 of up to a hundred, reduce costs, simultaneously compensating plate still can adopt that glass hot-pressing technique is shaping, optical clear moulded of plastics material or optical precision machine-shaping, adopt glass hot-pressing technique shaping, because this kind of aspheric surface compensating plate is close to dull and stereotyped, can do very thin, and eliminate stress completely easily via annealing, can obtain than photoetching or the better optical quality of aerosol process, even can make large-sized aspheric surface; Adopt optical clear moulded of plastics material, because plastics are thin, it is few to absorb, temperature effect greatly reduces; Adopt optical manufacturing method to obtain, available machine work computing machine controls machining precision, also by employ acid corrosion and optical polish even the method such as soft polishing obtain, plano-convex or crescent compensating plate 20 can be made; In addition, compensating plate 20 can adopt optical plastic, optical glass or crystal structure.
Simulated by Zemax, analyze the heat sensitivity of glass spherical mirror composite plastic aspherical film, find: when environment temperature is elevated to 50 DEG C by 20 DEG C, the focal beam spot diameter of aspherical glass lens become greater to 13.7um by 4um, compound non-spherical lens focal beam spot diameter become greater to 10.32um by 4um, by Compensation Design to meet non-spherical lens more insensitive to temperature.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.
Claims (5)
1. a combination non-spherical lens, it is characterized in that: comprise at least one spherical glass lens and compensating plate, described spherical glass lens has at least one side to be sphere curved surface, the one side of described compensating plate is non-spherical surface, described spherical glass lens and the substrate of compensating plate are freely separated, and spherical glass lens and compensating plate combination fixed by adjustable clamping structure.
2. one combination non-spherical lens according to claim 1, is characterized in that: described spherical glass lens adopts plano-convex, biconvex, concavo-convex or double-concave structure.
3. one combination non-spherical lens according to claim 1, is characterized in that: described compensating plate adopt plano-convex or the moon dental structure.
4. one combination non-spherical lens according to claim 1, is characterized in that: described compensating plate adopts optical plastic, optical glass or crystal.
5. one combination non-spherical lens according to claim 1, is characterized in that: described compensating plate adopts that photoetching technique is shaping, glass hot-pressing technique is shaping, optical clear moulded of plastics material or optical precision machine-shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420855878.9U CN204347283U (en) | 2014-12-30 | 2014-12-30 | A kind of combination non-spherical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420855878.9U CN204347283U (en) | 2014-12-30 | 2014-12-30 | A kind of combination non-spherical lens |
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| Publication Number | Publication Date |
|---|---|
| CN204347283U true CN204347283U (en) | 2015-05-20 |
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| CN201420855878.9U Active CN204347283U (en) | 2014-12-30 | 2014-12-30 | A kind of combination non-spherical lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443843A (en) * | 2016-12-07 | 2017-02-22 | 福建福晶科技股份有限公司 | Separated zero-clearance combination lens |
| CN109304540A (en) * | 2018-11-02 | 2019-02-05 | 英诺激光科技股份有限公司 | It is a kind of with arbitrary surface, for difference correction optical device direct production method |
| CN109590602A (en) * | 2017-09-28 | 2019-04-09 | 福州高意光学有限公司 | A method of it makes aspherical |
-
2014
- 2014-12-30 CN CN201420855878.9U patent/CN204347283U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443843A (en) * | 2016-12-07 | 2017-02-22 | 福建福晶科技股份有限公司 | Separated zero-clearance combination lens |
| CN109590602A (en) * | 2017-09-28 | 2019-04-09 | 福州高意光学有限公司 | A method of it makes aspherical |
| CN109590602B (en) * | 2017-09-28 | 2022-02-15 | 福州高意光学有限公司 | Method for manufacturing aspheric surface |
| CN109304540A (en) * | 2018-11-02 | 2019-02-05 | 英诺激光科技股份有限公司 | It is a kind of with arbitrary surface, for difference correction optical device direct production method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |