CN107402415A - A kind of complex optics angle of wedge piece and preparation method thereof - Google Patents
A kind of complex optics angle of wedge piece and preparation method thereof Download PDFInfo
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- CN107402415A CN107402415A CN201610335919.5A CN201610335919A CN107402415A CN 107402415 A CN107402415 A CN 107402415A CN 201610335919 A CN201610335919 A CN 201610335919A CN 107402415 A CN107402415 A CN 107402415A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
Abstract
The present invention relates to optical field, discloses a kind of complex optics angle of wedge piece and preparation method thereof, and at least two optical elements are deepened into optical cement together, and the optical element is the different materials of refractive index close；To the thang-kng mirror polish of the optical element combination after in-depth optical cement, make the splicing that its exiting surface is the different materials.Half micro- angle of wedge piece that the present invention is combined using the optical material of two or more different refractivity by optical cement splicing two groups or more than two groups different angles of composition, the refractive index close of each optical material is only needed, can be to obtain the small light beam angle of departure in the case of the wide-angle angle of wedge；The wide-angle angle of wedge is easy to process, and avoids the various problems of micro- angle of wedge processing；Micro- angle of wedge piece at any angle can also be produced.
Description
Technical field
The present invention relates to optical field, more particularly to complex optics angle of wedge piece and preparation method thereof.
Background technology
Angle of wedge piece is a kind of optical element for allowing incident beam to change the direction of propagation, and its key technical indexes includes：Angle, finish, face shape, laser damage threshold etc..In optics, optical communication field, angle of wedge piece is commonly employed.
A kind of angle of wedge piece is occurred in the market, and this kind of angle of wedge piece is the half of progress grinding and polishing in upper surface to plain film on the basis of plain film, as shown in figure 1, so as to obtain a micro- angle of wedge in the upper surface of plain film.This kind of micro- angle of wedge product is widely used in field of laser processing, and laser beam is from lower surface vertical incidence, two-beam of the separation with micro- angle when being emitted from upper surface.Laser Processing needs higher power, requires high to the damage from laser of product.But the plane-parallel finish in upper surface can be destroyed because the angle of wedge is small, during using conventional urethane or the micro- angle of wedge in pitch polishing upper surface, so as to reduce laser damage threshold, limits the application and development of this kind of micro- angle of wedge piece.
The content of the invention
It is an object of the present invention to provide a kind of complex optics angle of wedge piece and preparation method thereof, and the small light beam angle of departure can be obtained in the case of the wide-angle angle of wedge, easy to process.
To reach above-mentioned purpose, technical scheme proposed by the present invention is：A kind of preparation method of complex optics angle of wedge piece, comprises the following steps：
（1）By at least two optical elements in-depth optical cement together, the optical element is the different materials of refractive index close；
（2）To the thang-kng mirror polish of the optical element combination after in-depth optical cement, make the splicing that its exiting surface is the different materials；
Wherein the refractive index of the optical element in relatively low one end is less than the refractive index of the optical element of higher end.
Further, it is respectively optical plate and angle of wedge prism to state two optical elements, and the optical plate is abutted and is stacked and placed in the inclined plane of angle of wedge prism, and deepens optical cement and is integrated；It is the exiting surface parallel with lower surface that throwing will be held in the optical element combination level with both hands again, and the exiting surface is spliced by described two materials；The refractive index of the optical plate is more than the refractive index of angle of wedge prism.
Further, two optical element is optical plate, by two optical plates it is horizontal splice and deepen optical cement be integrated；The optical element combination is finished to the angle of wedge prism of combination again, the inclined plane of the angle of wedge prism of the combination is spliced by described two materials；The refractive index of the low one end of the inclined plane is less than the refractive index of high one end.
Further, in addition to one thickens optical plate, after the horizontal splicing of two optical plate, then by the plain film of the combination be stacked in it is described thicken on optical plate, and deepen optical cement and be integrated, the polishing is carried out to two optical plate again afterwards.
Further, two optical element is optical plate, is integrated being stacked above and below two optical plates and deepening optical cement；The optical element combination is finished to the angle of wedge prism of combination again, the inclined plane of the angle of wedge prism of the combination is spliced by described two materials；The refractive index of the low one end of the inclined plane is less than the refractive index of high one end.
Further, the refractive index of the optical element of the refractive index close is less than or equal to 0.1, and coefficient of expansion difference is less than or equal to 5 × 10-6K。
Complex optics angle of wedge piece made of the preparation method of the present invention, optical wedge cornual plate including at least two different refractivities combines, the exiting surface of the combination angle of wedge piece of composition is spliced by the optical wedge cornual plate of the different refractivity, and the light beam incided in it is divided into two-beam outgoing；The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
Further, at least two optical wedges cornual plate has the hypotenuse of same tilt degree；The plain film that the inclined side of at least two optical wedges cornual plate is parallel to each other relative to abutting and deepening optical cement into one group of upper and lower surface, its upper surface are spliced by least two optical wedges cornual plate.
Further, at least two optical wedges cornual plate has the hypotenuse of same tilt degree；At least two optical wedge cornual plates are docked in the horizontal direction, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of at least two optical wedges cornual plate.
Further, in addition to one thickens optical plate, the optical wedge angle prism of the composition be stacked in it is described thicken on optical plate, and deepen optical cement and be integrated.
Further, at least two optical wedges cornual plate has the hypotenuse of same tilt degree；At least two optical wedge cornual plates are stacked up and down, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of at least two optical wedges cornual plate.
Beneficial effects of the present invention are：Half micro- angle of wedge piece of combined using the optical material of two or more different refractivity by optical cement splicing two groups or more than two groups different angles of composition, the refractive index close of each optical material is only needed, can be to obtain the small light beam angle of departure in the case of the wide-angle angle of wedge；The wide-angle angle of wedge is easy to process, and avoids the various problems of micro- angle of wedge processing；Micro- angle of wedge piece at any angle can also be produced.
Brief description of the drawings
Fig. 1 is half micro- angle of wedge piece schematic diagram of prior art；
Fig. 2 is the complex optics angle of wedge piece preparation method one of the present invention；
Fig. 3 is complex optics angle of wedge piece schematic diagram made from method one shown in Fig. 2；
Fig. 4 is the complex optics angle of wedge piece preparation method two of the present invention；
Fig. 5 is complex optics angle of wedge piece schematic diagram made from method two shown in Fig. 4；
Fig. 6 is to increase by one on the basis of method two to thicken optical plate；
Fig. 7 is the complex optics angle of wedge piece preparation method three of the present invention；
Fig. 8 is complex optics angle of wedge piece schematic diagram made from method three shown in Fig. 7.
Reference：11st, angle of wedge prism；12nd, optical plate；21st, optical plate one；22nd, optical plate two；23rd, optical plate is thickened；31st, optical plate three；32nd, optical plate four.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention will be further described.
Half micro- angle of wedge piece that the present invention is combined using the optical material of two or more different refractivity by optical cement splicing two groups or more than two groups different angles of composition, the refractive index close of each optical material is only needed, can be to obtain the small light beam angle of departure in the case of the wide-angle angle of wedge；The wide-angle angle of wedge is easy to process, and avoids the various problems of micro- angle of wedge processing；Micro- angle of wedge piece at any angle can also be produced.
Specifically, the preparation method of the complex optics angle of wedge piece of the present invention, comprises the following steps：（1）By at least two optical elements in-depth optical cement together, the optical element is the different materials of refractive index close；（2）To the thang-kng mirror polish of the optical element combination after in-depth optical cement, make the splicing that its exiting surface is the different materials；Two optical elements after polishing have a gradient identical angle of wedge.
Method one as shown in Figures 2 and 3, combined using the optical plate 12 and angle of wedge prism 11 of refractive index close, angle of wedge prism 11 has the △ θ angle of wedge；Optical plate 12 is abutted and is stacked and placed in the inclined plane of angle of wedge prism 11, and deepens optical cement and is integrated；It is the exiting surface parallel with lower surface that throwing will be held in the optical element combination level with both hands again, and the exiting surface is spliced by above two material, and the optical plate after flat throwing is also processed a △ θ angle of wedge.Wherein, the refractive index n2 of optical plate is more than the refractive index n1 of angle of wedge prism, and n2-n1 is less than or equal to 0.1, preferably less than 0.02, and the coefficient of expansion difference of the two is less than or equal to 5 × 10-6K.When needing to obtain certain light beam angle of departure, if the refractive index of two optical materials is smaller, the △ θ angles of wedge needed are bigger, therefore are easier to process, and are more easy to accurate control.
Method two as shown in Figures 4 and 5, using two optical plates of refractive index close（Optical plate 1 and optical plate 2 22）Level, which is spliced and deepens optical cement, to be integrated；The optical element combination is finished to the angle of wedge prism of combination again, the combination after flat throwing has a △ θ angle of wedge, and the inclined plane of the angle of wedge prism of the combination is spliced by above two material.The Refractive Index of Material n1 of the optical plate 2 22 of one end low in the inclined plane is less than the Refractive Index of Material n2 of the optical plate 1 of high one end, and same, n2-n1 is less than or equal to 0.1, preferably less than 0.02, and the coefficient of expansion difference of the two is less than or equal to 5 × 10-6K.When needing to obtain certain light beam angle of departure, if the refractive index of two optical materials is smaller, the △ θ angles of wedge needed are bigger, therefore are easier to process, and are more easy to accurate control.
The complex optics angle of wedge piece as made from method two, incident light might have slight reflected light of plunderring at two optical plate optical cements, therefore be processed preferably with optical plate as thin as possible, reduce the light path for plunderring reflection.But excessively thin optical plate adds the difficulty for being finished to angle of wedge prism, therefore, adding one thickens optical plate 23.As shown in fig. 6, by after the horizontal splicing of two optical plates, then by the plain film of the combination be stacked in it is described thicken on optical plate 23, and deepen optical cement and be integrated, above-mentioned polishing is carried out to the combination of two optical plates again afterwards.In this method, the thickness of two optical plates can control 20-50 microns.
Method three as shown in FIG. 7 and 8, using two optical plates of refractive index close（Optical plate 3 31 and optical plate 4 32）It is stacked up and down and deepens optical cement and is integrated；The optical element combination is finished to the angle of wedge prism of combination again, the combination after flat throwing has a △ θ angle of wedge, and the inclined plane of the angle of wedge prism of the combination is spliced by above two material.The refractive index n1 of the optical plate 4 32 of one end low in the inclined plane is less than the refractive index n2 of the optical plate 3 31 of high one end, and likewise, n2-n1 is less than or equal to 0.1, preferably less than 0.02, the coefficient of expansion difference of the two is less than or equal to 5 × 10-6K.When needing to obtain certain light beam angle of departure, if the refractive index of two optical materials is smaller, the △ θ angles of wedge needed are bigger, therefore are easier to process, and are more easy to accurate control.
Utilize complex optics angle of wedge piece made of the above method, optical wedge cornual plate including at least two different refractivities combines, the exiting surface of the combination angle of wedge piece of composition is spliced by the optical wedge cornual plate of above-mentioned different refractivity, and the light beam incided in it is divided into two-beam outgoing；The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
Specifically, structure one as shown in Figure 3, the complex optics angle of wedge piece as made from method one includes two optical wedge cornual plates, and two optical wedge cornual plates have the hypotenuse of same tilt degree；The plain film that the inclined side of the two optical wedge cornual plates is parallel to each other relative to abutting and deepening optical cement into one group of upper and lower surface, its upper surface are spliced by above-mentioned two optical wedge cornual plate, and the light beam incided in it is divided into two-beam outgoing.The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
Structure two as shown in Figure 5, the complex optics angle of wedge piece as made from method two include two optical wedge cornual plates, and two optical wedge cornual plates have the hypotenuse of same tilt degree；The two optical wedge cornual plates are docked in the horizontal direction, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of above-mentioned two optical wedge cornual plate, and the light beam incided in it is divided into two-beam outgoing.The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
In order that as far as possible thin thickness can be used by obtaining above-mentioned two optical wedges cornual plate, one can also be increased in the bottom of said structure two and thicken optical plate, thickened as shown in fig. 6, the optical wedge angle prism of said structure two is stacked in into this on optical plate, and deepen optical cement and be integrated.
Structure three as shown in Figure 8, the complex optics angle of wedge piece as made from method three include two optical wedge cornual plates, and two optical wedge cornual plates have the hypotenuse of same tilt degree；The two optical wedge cornual plates are stacked up and down, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of above-mentioned two optical wedge cornual plate, and the light beam incided in it is divided into two-beam outgoing.The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
Although the present invention is specifically shown and described with reference to preferred embodiment; but those skilled in the art should be understood that; do not departing from the spirit and scope of the present invention that appended claims are limited; the various change made in the form and details to the present invention, is protection scope of the present invention.
Claims (10)
1. a kind of preparation method of complex optics angle of wedge piece, it is characterised in that comprise the following steps：
(1) at least two optical elements are deepened into optical cement together, the optical element is the different materials of refractive index close；
(2) to the thang-kng mirror polish of the optical element combination after in-depth optical cement, the splicing that its exiting surface is the different materials is made；
Wherein the refractive index of the optical element in relatively low one end is less than the refractive index of the optical element of higher end.
2. the preparation method of complex optics angle of wedge piece as claimed in claim 1, it is characterised in that：Two optical element is respectively optical plate and angle of wedge prism, and the optical plate is abutted and is stacked and placed in the inclined plane of angle of wedge prism, and deepens optical cement and is integrated；It is the exiting surface parallel with lower surface that throwing will be held in the optical element combination level with both hands again, and the exiting surface is spliced by described two materials；The refractive index of the optical plate is more than the refractive index of angle of wedge prism.
3. the preparation method of complex optics angle of wedge piece as claimed in claim 1, it is characterised in that：Two optical element is optical plate, by two optical plates it is horizontal splice and deepen optical cement be integrated；The optical element combination is finished to the angle of wedge prism of combination again, the inclined plane of the angle of wedge prism of the combination is spliced by described two materials；The refractive index of the low one end of the inclined plane is less than the refractive index of high one end.
4. the preparation method of complex optics angle of wedge piece as claimed in claim 3, it is characterised in that：Also thicken optical plate including one, after the horizontal splicing of two optical plate, then by the plain film of the combination be stacked in it is described thicken on optical plate, and deepen optical cement and be integrated, the polishing is carried out to two optical plate again afterwards.
5. the preparation method of complex optics angle of wedge piece as claimed in claim 1, it is characterised in that：Two optical element is optical plate, is integrated being stacked above and below two optical plates and deepening optical cement；The optical element combination is finished to the angle of wedge prism of combination again, the inclined plane of the angle of wedge prism of the combination is spliced by described two materials；The refractive index of the low one end of the inclined plane is less than the refractive index of high one end.
6. the preparation method of complex optics angle of wedge piece as described in claim any one of 1-5, it is characterised in that：The refractive index of the optical element of the refractive index close is less than or equal to 0.1；Coefficient of expansion difference is less than or equal to 5 × 10-6K。
A kind of 7. complex optics angle of wedge piece, it is characterised in that：Optical wedge cornual plate including at least two different refractivities is combined, and the exiting surface of the combination angle of wedge piece of composition is spliced by the optical wedge cornual plate of the different refractivity, and the light beam incided in it is divided into two-beam outgoing；The refractive index of the optical wedge cornual plate of wherein relatively low one end is less than the refractive index of the optical wedge cornual plate of higher end.
8. complex optics angle of wedge piece as claimed in claim 7, it is characterised in that：At least two optical wedges cornual plate has the hypotenuse of same tilt degree；The plain film that the inclined side of at least two optical wedges cornual plate is parallel to each other relative to abutting and deepening optical cement into one group of upper and lower surface, its upper surface are spliced by least two optical wedges cornual plate；Or at least two optical wedges cornual plate has the hypotenuse of same tilt degree；At least two optical wedge cornual plates are stacked up and down, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of at least two optical wedges cornual plate.
9. complex optics angle of wedge piece as claimed in claim 7, it is characterised in that：At least two optical wedges cornual plate has the hypotenuse of same tilt degree；At least two optical wedge cornual plates are docked in the horizontal direction, and it is one group of new optical wedge angle prism to deepen optical cement, the inclined-plane of the optical wedge angle prism of composition is along inclined direction spliced by the inclined-plane of at least two optical wedges cornual plate.
10. complex optics angle of wedge piece as claimed in claim 9, it is characterised in that：Also thicken optical plate including one, the optical wedge angle prism of the composition be stacked in it is described thicken on optical plate, and deepen optical cement and be integrated.
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| CN201610335919.5A CN107402415B (en) | 2016-05-20 | 2016-05-20 | Composite optical wedge angle sheet and manufacturing method thereof |
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| CN201610335919.5A CN107402415B (en) | 2016-05-20 | 2016-05-20 | Composite optical wedge angle sheet and manufacturing method thereof |
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| CN107402415B CN107402415B (en) | 2020-10-30 |
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