CN106154363A - A kind of sunlight converges Fresnel Lenses that hot spot is strip plane and preparation method thereof - Google Patents
A kind of sunlight converges Fresnel Lenses that hot spot is strip plane and preparation method thereof Download PDFInfo
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- CN106154363A CN106154363A CN201510179385.7A CN201510179385A CN106154363A CN 106154363 A CN106154363 A CN 106154363A CN 201510179385 A CN201510179385 A CN 201510179385A CN 106154363 A CN106154363 A CN 106154363A
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- sawtooth
- tooth
- fresnel lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
- G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
Abstract
The invention belongs to Fresnel Lenses technical field, particularly relate to Fresnel Lenses that a kind of sunlight convergence hot spot is strip plane and preparation method thereof, including substrate, saw-tooth-type structures, described substrate be arranged over saw-tooth-type structures, sawtooth, lens plane it is provided with in described saw-tooth-type structures, being set to pitch between described sawtooth and sawtooth, the angle between described profile of tooth inclined plane and lens plane is set to operating angle.The present invention is by the micro optical structure of a light-focusing Fresnel lens, by, in computer simulation to the running roller of a column type, being processed the micro structure of the Fresnel Lenses of rotary type on roller by diamond cutter.It is the Fresnel Lenses of strip that strip hot spot line style Phenanthrine mould roller recycles the hot-forming convergence solar facula that makes of the roller with Fresnel micro structure, and global formation length can infinitely extend, hot spot is controlled, energy conversion efficiency is high in employing, convergence hot spot is accurate, low cost of manufacture.
Description
Technical field
The invention belongs to Fresnel Lenses technical field, particularly relate to Fresnel Lenses that a kind of sunlight convergence hot spot is strip plane and preparation method thereof.
Background technology
Fresnel Lenses is invention before more than 200 year, and the aspects such as it is at projection screen and rear projection screen, infrared induction supervision equipment are widely applied, and meanwhile, in solar energy power generating, solar light-heat power-generation, the field such as solar thermal utilization also has wide application prospect.Development along with science and technology, the production material of Fresnel Lenses is by being initially unorganic glass, develop into employing high-molecular organic material, inorganic--organic polymer composite, and the material of multiple combination, and along with producing difference and the difference of product requirement of material, its processing method is the most different, such as hot pressing, heat cure, photocuring, moulding by casting etc..From cost, performance, from the point of view of the aspect such as environmental protection, with unorganic glass as transparent substrates, transparent silicone rubber is that the Fresnel Lenses of moulding material has been widely used, particularly particularly manifests in Application of Solar Energy field.
As shown in Figure 1 and Figure 2, traditional Fresnel Lenses surface is made up of a series of sawtooth pattern grooves, and core is ellipse camber line.Between each groove part and adjacent grooves, angle is different, but all concentrates at one by light, forms gonglion, the namely focus of lens.But, this traditional Fresnel Lenses, there is the shortcomings such as energy conversion efficiency is low.
Summary of the invention
, to solve Fresnel Lenses traditional in above-mentioned background technology, there is the shortcomings such as energy conversion efficiency is low in Fresnel Lenses that the present invention provides a kind of sunlight convergence hot spot to be strip plane and preparation method thereof.
nullTechnical problem solved by the invention realizes by the following technical solutions: the Fresnel Lenses that the present invention provides a kind of sunlight convergence hot spot to be strip plane，It is characterized in that: include substrate、Saw-tooth-type structures，Described substrate be arranged over saw-tooth-type structures，And lower surface is provided with exit facet，It is provided with sawtooth in described saw-tooth-type structures、Lens plane，Described lens plane is arranged over sawtooth，It is set to pitch between described sawtooth and sawtooth，And include interference surface、Profile of tooth inclined plane、Interference angle、Operating angle，Angle between described profile of tooth inclined plane and lens plane is set to operating angle，And and interference surface between angle be acute angle，Described operating angle is acute angle，Angle between described interference surface and lens plane is set to Interference angle，Described Interference angle is obtuse angle,Described saw-tooth-type structures is by sawtooth compact district、Sawtooth district、Sawtooth rarefaction forms，Described sawtooth compact district is positioned at the centre of saw-tooth-type structures，Described sawtooth district is positioned at both sides, sawtooth compact district，And it is symmetrical about sawtooth compact district，Described sawtooth rarefaction is positioned at the two ends of saw-tooth-type structures，And it is positioned at the outside in sawtooth district and about sawtooth compact district symmetry.
The tooth depth of described sawtooth is set to more than 0.8mm.
A kind of sunlight converges the manufacture method of the Fresnel Lenses that hot spot is strip plane, it is characterised in that it is as follows that the method comprising the steps of:
A, calculating parameter, require the parameter needed for computational manufacturing Fresnel Lenses according to the difference of client, and be the Fresnel structure of round dot converging hot spot, by the running roller of computer simulation a to column type, this hot spot is between 2mm-5mm and can to adjust；
B, co-extrusion saw lumber, be made Fresnel Lenses material by UVPC material and PC material co-extrusion, effectively prevents the ultraviolet injury to eyeglass, improves the transmittance of eyeglass, extends the service life of eyeglass；
C, electroforming mould, roller surface at mould forms one layer of nickel-phosphorus alloy with high cutting ability by electrocasting method, phosphorus content in alloy material must reach between 11% 14%, thickness of coating >=the 1mm of nickel-phosphorus alloy, the degree of depth of guarantee Fresnel Lenses tooth is to be processed to form in nickel-phosphorus alloy material, it is ensured that roughness reaches >=10nm；
D, engraved die, use the diamond cutter of the shape customization of a tool Fresnel structure tooth, nano level high-accuracy optical machine tool is utilized to machine the micro structure of strip Fresnel Lenses in the nickel-phosphorus alloy material of die roller, the dimensional accuracy of its pitch reaches ± 0.0001, tooth surface roughness≤10nm；
Thickness deviation is made in E, roll-in, utilizes the die processed, makes, in thermal forming device roll-in, the Fresnel Lenses thickness deviation that hot spot is strip plane；
F, process sizing, be placed in organic material after-treatment device, use 200,000 grades of purifications, and carry out heat treatment under stationary temperature and humidity, it is ensured that be the most contaminated in eyeglass manufacturing process.
The invention have the benefit that
1, the sunlight of this patent converge hot spot can board design as required, use that global formation length can infinitely extend, hot spot is controlled, energy conversion efficiency is high, converge that hot spot is the most controlled, low cost of manufacture.
2, the tooth depth of the sawtooth of this patent can reach more than 0.8mm, forms greater area of sensitive surface and improves the convergence rate of lens so that converges hot spot the most controlled.
3, Fresnel Lenses is placed in organic material after-treatment device by this patent, uses stationary temperature and humidity to shape, is greatly improved the mechanical performance of lens, uses 200,000 grades of purifications, it is ensured that the most contaminated in eyeglass manufacturing process.
4, the Fresnel Lenses of this patent is mainly characterized by converging in the range of sunlight hot spot to line, and this hot spot can effectively utilize on the interception face that hot spot is formed, and makes photothermy on the accumulation of heat devices such as heat pipe, improves heat utilization efficiency and energy conversion efficiency.
5, this patent is by the micro optical structure of a light-focusing Fresnel lens, by computer simulation to the running roller of a column type, by diamond cutter process on roller rotary type the micro structure of Fresnel Lenses.Strip hot spot line style Phenanthrine mould roller recycling is the Fresnel Lenses of strip with the hot-forming convergence solar facula that makes of roller of Fresnel micro structure, and whole work technique is simple, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is tradition Fresnel Lenses front elevation；
Fig. 2 is tradition Fresnel Lenses profile；
Fig. 3 is the Fresnel Lenses front elevation of the present invention；
Fig. 4 is the Fresnel Lenses profile of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further:
In figure: 1-saw-tooth-type structures, 2-sawtooth district, 3-sawtooth compact district, 4-sawtooth rarefaction, 5-interference surface, 6-profile of tooth inclined plane, 7-Interference angle, 8-operating angle, 9-pitch, 10-substrate, 11-lens plane, 12-sawtooth.
Elaborating embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
nullThe present embodiment includes: substrate 10、Saw-tooth-type structures 1，Substrate 10 be arranged over saw-tooth-type structures 1，And lower surface is provided with exit facet，Sawtooth 12 it is provided with in saw-tooth-type structures 1、Lens plane 11，Lens plane 11 is arranged over sawtooth 12，Pitch 9 it is set between sawtooth 12 and sawtooth 12，And include interference surface 5、Profile of tooth inclined plane 6、Interference angle 7、Operating angle 8，Angle between profile of tooth inclined plane 6 and lens plane 11 is set to operating angle 8，And and interference surface 5 between angle be acute angle，Operating angle 8 is acute angle，Angle between interference surface 5 and lens plane 11 is set to Interference angle 7，Interference angle 7 is obtuse angle，Saw-tooth-type structures 1 is by sawtooth compact district 3、Sawtooth district 2、Sawtooth rarefaction 4 forms，Sawtooth compact district 3 is positioned at the centre of saw-tooth-type structures 1，Sawtooth district 2 is positioned at both sides, sawtooth compact district 3，And it is symmetrical about sawtooth compact district 3，Sawtooth rarefaction 4 is positioned at the two ends of saw-tooth-type structures 1，And it is positioned at the outside in sawtooth district 2 and about sawtooth compact district 3 symmetry.
The tooth depth of sawtooth 12 is set to 0.8.
A kind of sunlight converges the manufacture method of the Fresnel Lenses that hot spot is strip plane and comprises the following steps that
A, calculating parameter, require the parameter needed for computational manufacturing Fresnel Lenses according to the difference of client, and be the Fresnel structure of round dot converging hot spot, by the running roller of computer simulation a to column type, this hot spot is 2mm and can adjust；
B, co-extrusion saw lumber, be made Fresnel Lenses material by UVPC material and PC material co-extrusion, effectively prevents the ultraviolet injury to eyeglass, improves the transmittance of eyeglass, extends the service life of eyeglass；
C, electroforming mould, roller surface at mould forms one layer of nickel-phosphorus alloy with high cutting ability by electrocasting method, phosphorus content in alloy material must reach 11%, thickness of coating 1mm of nickel-phosphorus alloy, the degree of depth of guarantee Fresnel Lenses tooth is to be processed to form in nickel-phosphorus alloy material, it is ensured that roughness reaches 10nm；
D, engraved die, use the diamond cutter of the shape customization of a tool Fresnel structure tooth, nano level high-accuracy optical machine tool is utilized to machine the micro structure of strip Fresnel Lenses in the nickel-phosphorus alloy material of die roller, the dimensional accuracy of its pitch reaches ± 0.0001, tooth surface roughness 10nm；
Thickness deviation is made in E, roll-in, utilizes the die processed, makes, in thermal forming device roll-in, the Fresnel Lenses thickness deviation that hot spot is strip plane；
F, process sizing, be placed in organic material after-treatment device, use 200,000 grades of purifications, and carry out heat treatment under stationary temperature and humidity, it is ensured that be the most contaminated in eyeglass manufacturing process.
Embodiment 2
nullThe present embodiment includes: substrate 10、Saw-tooth-type structures 1，Substrate 10 be arranged over saw-tooth-type structures 1，And lower surface is provided with exit facet，Sawtooth 12 it is provided with in saw-tooth-type structures 1、Lens plane 11，Lens plane 11 is arranged over sawtooth 12，Pitch 9 it is set between sawtooth 12 and sawtooth 12，And include interference surface 5、Profile of tooth inclined plane 6、Interference angle 7、Operating angle 8，Angle between profile of tooth inclined plane 6 and lens plane 11 is set to operating angle 8，And and interference surface 5 between angle be acute angle，Operating angle 8 is acute angle，Angle between interference surface 5 and lens plane 11 is set to Interference angle 7，Interference angle 7 is obtuse angle，Saw-tooth-type structures 1 is by sawtooth compact district 3、Sawtooth district 2、Sawtooth rarefaction 4 forms，Sawtooth compact district 3 is positioned at the centre of saw-tooth-type structures 1，Sawtooth district 2 is positioned at both sides, sawtooth compact district 3，And it is symmetrical about sawtooth compact district 3，Sawtooth rarefaction 4 is positioned at the two ends of saw-tooth-type structures 1，And it is positioned at the outside in sawtooth district 2 and about sawtooth compact district 3 symmetry.
The tooth depth of sawtooth 12 is set to 0.9.
A kind of sunlight converges the manufacture method of the Fresnel Lenses that hot spot is strip plane and comprises the following steps that
A, calculating parameter, require the parameter needed for computational manufacturing Fresnel Lenses according to the difference of client, and be the Fresnel structure of round dot converging hot spot, by the running roller of computer simulation a to column type, this hot spot is 4mm and can adjust；
B, co-extrusion saw lumber, be made Fresnel Lenses material by UVPC material and PC material co-extrusion, effectively prevents the ultraviolet injury to eyeglass, improves the transmittance of eyeglass, extends the service life of eyeglass；
C, electroforming mould, roller surface at mould forms one layer of nickel-phosphorus alloy with high cutting ability by electrocasting method, phosphorus content in alloy material must reach 12%, thickness of coating 2mm of nickel-phosphorus alloy, the degree of depth of guarantee Fresnel Lenses tooth is to be processed to form in nickel-phosphorus alloy material, it is ensured that roughness reaches 11nm；
D, engraved die, use the diamond cutter of the shape customization of a tool Fresnel structure tooth, nano level high-accuracy optical machine tool is utilized to machine the micro structure of strip Fresnel Lenses in the nickel-phosphorus alloy material of die roller, the dimensional accuracy of its pitch reaches ± 0.0001, tooth surface roughness 9nm；
Thickness deviation is made in E, roll-in, utilizes the die processed, makes, in thermal forming device roll-in, the Fresnel Lenses thickness deviation that hot spot is strip plane；
F, process sizing, be placed in organic material after-treatment device, use 200,000 grades of purifications, and carry out heat treatment under stationary temperature and humidity, it is ensured that be the most contaminated in eyeglass manufacturing process.
Embodiment 3
nullThe present embodiment includes: substrate 10、Saw-tooth-type structures 1，Substrate 10 be arranged over saw-tooth-type structures 1，And lower surface is provided with exit facet，Sawtooth 12 it is provided with in saw-tooth-type structures 1、Lens plane 11，Lens plane 11 is arranged over sawtooth 12，Pitch 9 it is set between sawtooth 12 and sawtooth 12，And include interference surface 5、Profile of tooth inclined plane 6、Interference angle 7、Operating angle 8，Angle between profile of tooth inclined plane 6 and lens plane 11 is set to operating angle 8，And and interference surface 5 between angle be acute angle，Operating angle 8 is acute angle，Angle between interference surface 5 and lens plane 11 is set to Interference angle 7，Interference angle 7 is obtuse angle，Saw-tooth-type structures 1 is by sawtooth compact district 3、Sawtooth district 2、Sawtooth rarefaction 4 forms，Sawtooth compact district 3 is positioned at the centre of saw-tooth-type structures 1，Sawtooth district 2 is positioned at both sides, sawtooth compact district 3，And it is symmetrical about sawtooth compact district 3，Sawtooth rarefaction 4 is positioned at the two ends of saw-tooth-type structures 1，And it is positioned at the outside in sawtooth district 2 and about sawtooth compact district 3 symmetry.
The tooth depth of sawtooth 12 is set to 1.0.
A kind of sunlight converges the manufacture method of the Fresnel Lenses that hot spot is strip plane and comprises the following steps that
A, calculating parameter, require the parameter needed for computational manufacturing Fresnel Lenses according to the difference of client, and be the Fresnel structure of round dot converging hot spot, by the running roller of computer simulation a to column type, this hot spot is 5mm and can adjust；
B, co-extrusion saw lumber, be made Fresnel Lenses material by UVPC material and PC material co-extrusion, effectively prevents the ultraviolet injury to eyeglass, improves the transmittance of eyeglass, extends the service life of eyeglass；
C, electroforming mould, roller surface at mould forms one layer of nickel-phosphorus alloy with high cutting ability by electrocasting method, phosphorus content in alloy material must reach 14%, thickness of coating 3mm of nickel-phosphorus alloy, the degree of depth of guarantee Fresnel Lenses tooth is to be processed to form in nickel-phosphorus alloy material, it is ensured that roughness reaches 12nm；
D, engraved die, use the diamond cutter of the shape customization of a tool Fresnel structure tooth, nano level high-accuracy optical machine tool is utilized to machine the micro structure of strip Fresnel Lenses in the nickel-phosphorus alloy material of die roller, the dimensional accuracy of its pitch reaches ± 0.0001, tooth surface roughness 8nm；
Thickness deviation is made in E, roll-in, utilizes the die processed, makes, in thermal forming device roll-in, the Fresnel Lenses thickness deviation that hot spot is strip plane；
F, process sizing, be placed in organic material after-treatment device, use 200,000 grades of purifications, and carry out heat treatment under stationary temperature and humidity, it is ensured that be the most contaminated in eyeglass manufacturing process.
Utilize technical solutions according to the invention, or those skilled in the art is under the inspiration of technical solution of the present invention, design similar technical scheme, and reach above-mentioned technique effect, all fall into protection scope of the present invention.
Claims (3)
- null1. a sunlight converges the Fresnel Lenses that hot spot is strip plane，It is characterized in that: include substrate、Saw-tooth-type structures，Described substrate be arranged over saw-tooth-type structures，And lower surface is provided with exit facet，It is provided with sawtooth in described saw-tooth-type structures、Lens plane，Described lens plane is arranged over sawtooth，It is set to pitch between described sawtooth and sawtooth，And include interference surface、Profile of tooth inclined plane、Interference angle、Operating angle，Angle between described profile of tooth inclined plane and lens plane is set to operating angle，And and interference surface between angle be acute angle，Described operating angle is acute angle，Angle between described interference surface and lens plane is set to Interference angle，Described Interference angle is obtuse angle,Described saw-tooth-type structures is by sawtooth compact district、Sawtooth district、Sawtooth rarefaction forms，Described sawtooth compact district is positioned at the centre of saw-tooth-type structures，Described sawtooth district is positioned at both sides, sawtooth compact district，And it is symmetrical about sawtooth compact district，Described sawtooth rarefaction is positioned at the two ends of saw-tooth-type structures，And it is positioned at the outside in sawtooth district and about sawtooth compact district symmetry.
- A kind of sunlight the most according to claim 1 converges the Fresnel Lenses that hot spot is strip plane, it is characterised in that: the tooth depth of described sawtooth is set to more than 0.8mm.
- 3. a sunlight converges the manufacture method of the Fresnel Lenses that hot spot is strip plane, it is characterised in that it is as follows that the method comprising the steps of :A, calculating parameter, require the parameter needed for computational manufacturing Fresnel Lenses according to the difference of client, and be the Fresnel structure of round dot converging hot spot, by the running roller of computer simulation a to column type, this hot spot is between 2mm-5mm and can to adjust；B, co-extrusion saw lumber, be made Fresnel Lenses material by UVPC material and PC material co-extrusion, effectively prevents the ultraviolet injury to eyeglass, improves the transmittance of eyeglass, extends the service life of eyeglass；C, electroforming mould, roller surface at mould forms one layer of nickel-phosphorus alloy with high cutting ability by electrocasting method, phosphorus content in alloy material must reach between 11% 14%, thickness of coating >=the 1mm of nickel-phosphorus alloy, the degree of depth of guarantee Fresnel Lenses tooth is to be processed to form in nickel-phosphorus alloy material, it is ensured that roughness reaches >=10nm；D, engraved die, use the diamond cutter of the shape customization of a tool Fresnel structure tooth, nano level high-accuracy optical machine tool is utilized to machine the micro structure of strip Fresnel Lenses in the nickel-phosphorus alloy material of die roller, the dimensional accuracy of its pitch reaches ± 0.0001, tooth surface roughness≤10nm；Thickness deviation is made in E, roll-in, utilizes the die processed, makes, in thermal forming device roll-in, the Fresnel Lenses thickness deviation that hot spot is strip plane；F, process sizing, be placed in organic material after-treatment device, use 200,000 grades of purifications, and carry out heat treatment under stationary temperature and humidity, it is ensured that be the most contaminated in eyeglass manufacturing process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510179385.7A CN106154363A (en) | 2015-04-16 | 2015-04-16 | A kind of sunlight converges Fresnel Lenses that hot spot is strip plane and preparation method thereof |
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| CN201510179385.7A CN106154363A (en) | 2015-04-16 | 2015-04-16 | A kind of sunlight converges Fresnel Lenses that hot spot is strip plane and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106990665A (en) * | 2017-05-24 | 2017-07-28 | 成都菲斯特科技有限公司 | A kind of short distance projection screen being made up of eight kinds of difference in functionality materials and preparation method thereof |
| CN107015298A (en) * | 2017-05-03 | 2017-08-04 | 成都菲斯特科技有限公司 | A kind of preparation method of linear Fresnel lens |
| CN109985739A (en) * | 2019-04-09 | 2019-07-09 | 哈尔滨工业大学 | One kind is towards the molding three-freedom degree precision operating device of surface microfeatures and its motivational techniques |
| WO2021103152A1 (en) * | 2019-11-27 | 2021-06-03 | 诚瑞光学(常州)股份有限公司 | Method for manufacturing fresnel lens metal mold |
| CN113183447A (en) * | 2021-04-29 | 2021-07-30 | 青岛海信激光显示股份有限公司 | Fresnel microstructure mold, Fresnel membrane preparation method and orthographic projection screen |
| CN114309684A (en) * | 2022-01-10 | 2022-04-12 | 集美大学 | Fresnel lens manufacturing cutter, machining method and Fresnel lens mold core manufacturing method |
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| CN2606363Y (en) * | 2003-01-27 | 2004-03-10 | 刘福宇 | Long-focus fresnel lens |
| CN101334492A (en) * | 2007-06-26 | 2008-12-31 | 松下电器产业株式会社 | Light receiver and fresnel lens used therein |
| CN102230980A (en) * | 2011-06-24 | 2011-11-02 | 佘晓峰 | Method for manufacturing high-luminous-efficacy focusing solar Fresnel lens |
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| CN2606363Y (en) * | 2003-01-27 | 2004-03-10 | 刘福宇 | Long-focus fresnel lens |
| CN101334492A (en) * | 2007-06-26 | 2008-12-31 | 松下电器产业株式会社 | Light receiver and fresnel lens used therein |
| CN102230980A (en) * | 2011-06-24 | 2011-11-02 | 佘晓峰 | Method for manufacturing high-luminous-efficacy focusing solar Fresnel lens |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015298A (en) * | 2017-05-03 | 2017-08-04 | 成都菲斯特科技有限公司 | A kind of preparation method of linear Fresnel lens |
| CN106990665A (en) * | 2017-05-24 | 2017-07-28 | 成都菲斯特科技有限公司 | A kind of short distance projection screen being made up of eight kinds of difference in functionality materials and preparation method thereof |
| CN106990665B (en) * | 2017-05-24 | 2022-08-19 | 成都菲斯特科技有限公司 | Short-distance projection screen composed of eight different functional materials and manufacturing method thereof |
| CN109985739A (en) * | 2019-04-09 | 2019-07-09 | 哈尔滨工业大学 | One kind is towards the molding three-freedom degree precision operating device of surface microfeatures and its motivational techniques |
| WO2021103152A1 (en) * | 2019-11-27 | 2021-06-03 | 诚瑞光学(常州)股份有限公司 | Method for manufacturing fresnel lens metal mold |
| CN113183447A (en) * | 2021-04-29 | 2021-07-30 | 青岛海信激光显示股份有限公司 | Fresnel microstructure mold, Fresnel membrane preparation method and orthographic projection screen |
| CN113183447B (en) * | 2021-04-29 | 2022-11-25 | 青岛海信激光显示股份有限公司 | Fresnel microstructure mold, fresnel membrane preparation method and orthographic projection screen |
| CN114309684A (en) * | 2022-01-10 | 2022-04-12 | 集美大学 | Fresnel lens manufacturing cutter, machining method and Fresnel lens mold core manufacturing method |
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