CN209070299U - A kind of anti-light curtain of S-shaped - Google Patents
A kind of anti-light curtain of S-shaped Download PDFInfo
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- CN209070299U CN209070299U CN201821709190.4U CN201821709190U CN209070299U CN 209070299 U CN209070299 U CN 209070299U CN 201821709190 U CN201821709190 U CN 201821709190U CN 209070299 U CN209070299 U CN 209070299U
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Abstract
The utility model discloses a kind of anti-light curtains of S-shaped.The anti-light curtain of the S-shaped includes substrate layer and the optical prism array on the substrate layer outer surface, and the optical prism array is the prism that several curved sections of wave S-shaped in the horizontal direction closely arranged are triangle；The downside of the prism is coated with reflecting coating；The upper side of the prism is coated with light-absorbing coating.The optical prism array on the anti-light curtain surface of the S-shaped uses the setting of S-shaped wave in the horizontal direction, the horizontal symmetrical relationship of changeable cloth curtain structure and picture element spacing, as projection device, the especially curtain of Table top type laser television, aesthetic appearance can be not only promoted, but also can avoid the optical interference phenomenas such as moir patterns, improves the uniformity of reflecting brightness, it is not apparent flaws obviously, effectively promotes the visual sense of beauty that client watches.
Description
Technical field
The utility model belongs to anti-light curtain technical field, and in particular to a kind of anti-light curtain of S-shaped.
Background technique
Patent US7262911B2 discloses a kind of reflective viewing screen (also known as anti-light curtain), and being used for will be from projector with phase
The imaging of projection angled for viewer is reflected into the direction for being substantially perpendicular to the reflective viewing screen, i.e. viewer
Positive front.The reflective viewing screen includes having the substrate of saw-tooth appearance and on an edge of each sawtooth of the substrate
Light absorbing layer.The basic structure of existing reflective viewing screen is also on the whole in this way, be equipped with saw-tooth appearance, and sawtooth in substrate surface
Form linear type, equidistant prism structure.But the shape of the prism bar of the prism structure (Saw blade) is single, diaphragm is saturating
It is bright, if prism is slightly impaired or defect, appearance are easy for visually arriving black-white point；And if the picture element spacing that projector itself projects
If a certain proportion of multiple proportion is presented with cloth curtain horizontal linear structure spacing, it is most likely that generate optically More (Moir é)
Line phenomenon, generating abnormal interference fringe influences ornamental value.As it can be seen that existing reflective viewing screen is in use, from dry
Disturbing ripple, physical imperfection, line stream, stain and the unfavorable factors such as uneven will affect the effect of vision.
Utility model content
Therefore, single for the shape of the prism bar of the prism structure of reflective viewing screen in the prior art, it is also easy to produce More
The technical issues of line interference phenomenon and visual effect are influenced vulnerable to apparent flaws, the purpose of this utility model is to provide a kind of S
The anti-light curtain of shape, the anti-light curtain of the S-shaped optimize in prism microstructure, avoid generating moir patterns interference phenomenon, and
Apparent flaws are not obviously, other than promoting uniformity, also promote the visual sense of beauty that client watches.
The anti-light curtain of the S-shaped of the utility model includes substrate layer and the optical prism on the substrate layer outer surface
Array, which is characterized in that the optical prism array is several curved sections of wave S-shaped in the horizontal direction closely to arrange
Face is the prism of triangle；The downside of the prism is coated with reflecting coating；The upper side of the prism is applied coated with extinction
Layer.
The anti-light curtain of the S-shaped of the utility model, as projection device, the especially curtain of Table top type laser television, due to
S-shaped wave is used in the horizontal direction to be arranged, and the horizontal symmetrical relationship of cloth curtain structure and picture element spacing, Jin Erke can be changed
It avoids the optical interference phenomenas such as moir patterns and promotes aesthetic appearance, improve the uniformity of reflecting brightness, and be arranged by coating, it can
Improve the brightness of curtain.
Preferably, the angle α of the downside of the prism and the substrate layer is 20 °~50 ° preferably 35 °~45 ° more excellent
35 ° are selected, the smaller inverted image for reflexing to ceiling of α angle can be more obvious；The angle β of the upper side of the prism and the substrate layer
It is 45 °~90 ° preferably 50 °~75 ° more preferable 75 °, β angle is smaller, and the extinction area on curtain is bigger, but also results in reflective
Face area ratio, which reduces, reduces brightness.
Preferably, the curvilinear path being repeated cyclically in the sigmoid curve that the prism is in the horizontal direction is along water
Flat axis is in two reversed tangent arcs, wherein upward arc length L1It is 100-400 μm, camber H1It is 1-6 μm；Downwards
Arc length L2It is 100-400 μm, camber H2It is 1-6 μm.
Or the preferably, curvilinear path being repeated cyclically in the sigmoid curve that the prism is in the horizontal direction
Vertical height is 2-12 μm；Lateral length is 200-800 μm.
Preferably, the substrate layer thickness d1It is 20-1000 μm；The thickness d of the optical prism array2It is 20-500 μm；
Reflecting coating with a thickness of 0.1-20 μm preferably 5-20 μm；Light-absorbing coating with a thickness of 1-20 μm preferably 5-20 μm.
Preferably, the substrate layer material is glass or plastics.It is preferred that bent glass or plastics.
Wherein plastics can use polyester resin (polyesterresin, PET), polyacrylate resin
(polyacrylate resin), polyolefin resin (polyolefin resin), polycarbonate resin (polycarbonate
Resin), polyurethane resin (polyurethane resin), Triafol T (TAC, triacetate
Cellulose), thermoplastic polyurethane elastomer rubber (TPU), polyurethane (PU) or polyvinyl chloride (PVC) etc..
Preferably, the optical prism array material is UV resin (ultraviolet curable resin) or thermoplastic plastic.
The UV resin be selected from acrylate, Epocryl, aliphatic urethane acrylate resin,
Aromatic urethane acrylate resin and polyester acrylate resin etc. can be through UV radiation curing resins.
Preferably, the reflecting coating is titanium oxide, zinc oxide, zirconium oxide, aluminium oxide, barium sulfate, mica or silica.
Preferably, the light-absorbing coating is the black light-absorbings materials such as carbon black, iron oxide black or black spinel.
The anti-light curtain of the S-shaped of the utility model step can be prepared by the following method:
A) optical prism array is made by hard mold and mantle technique: UV resin is coated on substrate, it is more using having
The mold roller of knife mark carries out roll-in, and UV curing molding technology of arranging in pairs or groups in nipping process imprints the UV resin on substrate layer solid
Change the optical prism array for forming S-shaped；Or thermoplastic plastic is coated on substrate, using the mold roller with a plurality of knife mark
Roll-in is carried out, Hot-press cooling curing molding technology of arranging in pairs or groups in nipping process, by the thermoplastic plastic coining solidification shape on substrate layer
At the optical prism array of S-shaped；
B) optical treatment: the upper and lower side exposed to optical prism array carries out optical treatment respectively, and downside coating is anti-
Luminescent material forms reflecting coating, and upper side coats light absorbent and forms light-absorbing coating.
Preparation method about S-shaped optical prism array structure:
Fine turning lathe processing technology is usually using roller coining (Rollerimprint) and nanometer transfer printing
(Nanoimprinting lithography) technology, principle are bored using Ultraprecision Machining, such as to shape monocrystalline
Stone knife processes a plurality of knife mark to form mold roller on the coat of metal of drum die, then rolling forming technology progress of arranging in pairs or groups is ultraviolet
Line solidifies (UV curing), by knife mark (or micro structured pattern) transcription on mold roller on optical film material.
The fast tool servo that S type lines can be manufactured groove on mold roller using screw thread cutting (thread cutting) method
System (FTS) application.In order to provide scheduled irregular structure shape, these equipment may include specific micro-disturbance
(perturbation) component (means) assists the tool to be moved and manufactured prism with minimum offset (shift), therefore
Produce non-facet (non-facet) flat irregular shape with different degrees of irregularity.Fast tool servo system can wrap
Ultrasonic wave vibration device is included to provide micro-disturbance or vibration and reaches the scheduled irregular structure shape of institute in mold.By using
These equipment form surface in a mold in a manner of increasing freedom degree, can get having for the structured surface of above-mentioned optical substrate
The regular or irregular prism that dimensionally changes and plane.
In the step a of method described in the utility model, the solidified forming of optical prism array is cold using photocuring or hot pressing
But structure is formed.
It, can solidified forming by ultraviolet light irradiation when UV resin roll-in when using photocuring.
It when using Hot-press cooling, is coated with after thermoplastic plastic is heated, is formed after gradually being cooled down in nipping process.It can be used
Chill roll is cooled down.
Preferably, first coating reflecting coating in step b, it is then coated with light-absorbing coating.Coating method include coating, spraying,
Sputter etc..
The utility model has the following beneficial effects:
1, the optical prism array of the anti-light curtain of the S-shaped of the utility model, surface uses S-shaped wave in the horizontal direction
Unrestrained formula setting, can be changed the horizontal symmetrical relationship of cloth curtain structure and picture element spacing, as projection device, especially Table top type laser
The curtain of TV can not only promote aesthetic appearance, but also can avoid the optical interference phenomenas such as moir patterns, improve the equal of reflecting brightness
Even property, is not apparent flaws obviously, and is arranged by coating, and the brightness of curtain can be improved, can effectively promote visitor in a word
The ornamental visual sense of beauty in family.
2, in the method for the utility model preparation anti-light curtain of S-shaped, optical prism array is by hard mold and soft
Acrylate to be solidified is coated on substrate by membrane process come what is carried out, rolling forming technology of arranging in pairs or groups, will be on mold roller
Knife mark (or micro structured pattern) transcription on bottom surface layer, and then be formed by curing the optical prism battle array with optical effect
Column.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the anti-light curtain of the utility model S-shaped；
Fig. 2 is the schematic perspective view of the prism of the anti-light curtain of the utility model S-shaped；
Fig. 3 is the schematic side view of the prism of the anti-light curtain of the utility model S-shaped；
Fig. 4 and Fig. 5 is the sigmoid curve schematic diagram of the prism of the anti-light curtain of the utility model S-shaped；
Fig. 6 is the preparation process schematic diagram of the Stereolithography of the anti-light curtain of the utility model S-shaped；
Fig. 7 is the preparation process schematic diagram of the Hot-press cooling curing molding of the anti-light curtain of the utility model S-shaped.
Appended drawing reference
Substrate layer 1, optical prism array 2, downside 21, upper side 22, reflecting coating 23, light-absorbing coating 24.
Specific embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.It should be understood that following embodiment is only used for
Bright the utility model is not for restriction the scope of the utility model.
Examples 1 to 6
Fig. 1 show the structural schematic diagram of the anti-light curtain of S-shaped of some preferred embodiments of the utility model comprising substrate
Layer 1 and the optical prism array 2 on 1 outer surface of substrate layer.
As shown in Figures 2 and 3, optical prism array 2 is that several waves S-shaped in the horizontal direction closely arranged are curved
Section is the prism of triangle；The downside 21 of prism is coated with reflecting coating 23, forms reflective surface, can be by the light of projection source
Line reflection is to viewing person region；The upper side 22 of prism is coated with light-absorbing coating 24, forms extinction face, can be by external environment
Light is absorbed, and is not re-reflected into the region where viewing person.
The anti-light curtain of the S-shaped of the utility model, as projection device, the especially curtain of Table top type laser television, due to
S-shaped wave is used in the horizontal direction to be arranged, and the horizontal symmetrical relationship of cloth curtain structure and picture element spacing, Jin Erke can be changed
It avoids the optical interference phenomenas such as moir patterns and promotes aesthetic appearance, improve the uniformity of reflecting brightness, and be arranged by coating, it can
Improve the brightness of curtain.
Preferably, the angle α of the downside 21 of prism and substrate layer 1 is 20 °~50 ° preferably 35 °, the smaller reflection of α angle
Inverted image to ceiling can be more obvious；The upper side 22 of prism and the angle β of substrate layer 1 are 45 °~90 ° preferably 75 °, β angle
Smaller, the extinction area on curtain is bigger, but also results in the reduction brightness of reflective area scale smaller.
Preferably, as shown in figure 4, the curvilinear path being repeated cyclically in the sigmoid curve that prism is in the horizontal direction
To be in two reversed tangent arcs along horizontal axis, wherein upward arc length L1It is 100-400 μm, camber H1For 1-6 μ
m；Downward arc length L2It is 100-400 μm, camber H2It is 1-6 μm.Wherein L2It can be equal to or not equal to L1, H2It can be equal to or not
Equal to H1。
About the parameter of sigmoid curve, mode described below can also be used, as shown in figure 5, prism is in the horizontal direction
Sigmoid curve in the vertical height of curvilinear path that is repeated cyclically be 2-12 μm；Lateral length is 200-800 μm.
Preferably, 1 thickness d of substrate layer1It is 20-1000 μm；The thickness d of optical prism array 22It is 20-500 μm；Reflective painting
Layer 23 with a thickness of 0.1-20 μm；Light-absorbing coating 24 with a thickness of 1-20 μm.
Preferably, 1 material of substrate layer is the glass or plastics of light-permeable.Wherein plastics can use polyester resin
(polyesterresin, PET), polyacrylate resin (polyacrylate resin), polyolefin resin (polyolefin
Resin), polycarbonate resin (polycarbonate resin), polyurethane resin (polyurethane
Resin), Triafol T (TAC, triacetate cellulose), thermoplastic polyurethane elastomer rubber (TPU), poly-
Urethane (PU) or polyvinyl chloride (PVC) etc..
Preferably, 2 material of optical prism array is UV resin or thermoplastic plastic.UV resin can be selected from acrylate tree
Rouge, Epocryl, aliphatic urethane acrylate resin, aromatic urethane acrylate resin or polyester third
Alkene acid ester resin etc. can be through UV radiation curing resin, preferably UV light-curable acrylate resin.
Preferably, reflecting coating 23 is titanium oxide, zinc oxide, zirconium oxide, aluminium oxide, barium sulfate, mica or silica.
Preferably, light-absorbing coating 24 is the black light-absorbings materials such as carbon black, iron oxide black, black spinel.
Table 1 shows the relevant parameter of the anti-light curtain of S-shaped of the utility model preferred embodiment 1~6.
The relevant parameter of the anti-light curtain of S-shaped of 1 Examples 1 to 6 of table
The anti-light curtain of the S-shaped of the utility model embodiment 1~6 is prepared by technical process as described in Figure 6, detailed process
Step includes:
A) production of optical prism array: by hard mold and mantle technique, UV light-curable acrylate resin is coated with
On substrate (PET film), UV solidified forming technology of arranging in pairs or groups in coating process carries out roller using the mold roller with a plurality of knife mark
Acrylate on substrate layer 1, is imprinted the optical prism array to form S-shaped by pressure；
B) optical treatment: the upper and lower side exposed to optical prism array carries out optical treatment respectively, and downside is (three in figure
Angular right side) coating reflectorized material, upper side (on the left of figure intermediate cam shape) coating light absorbent.
Preparation method about S-shaped optical prism array structure:
For fine turning lathe processing technology usually using roller coining and nanometer transfer printing technology, principle is to utilize Ultra-precision Turning
Technology, such as a plurality of knife mark is processed to form mold roller on the coat of metal of drum die to shape monocrystalline diamond knife, then is taken
Ultraviolet curing is carried out with rolling forming technology, by knife mark (or micro structured pattern) transcription on mold roller in optical film material
On.
S type lines can be applied using the fast tool servo system (FTS) that screw thread cutting method manufactures groove on mold roller.For
Offer scheduled irregular structure shape, these equipment may include specific micro-disturbance component to assist tool with minimum inclined
The movement of shift-in row and manufacture prism, therefore produce the flat irregular shape of non-facet with different degrees of irregularity.Fastly
Knife servo-system may include that ultrasonic wave vibration device is reached in mold the scheduled structure of institute to provide micro-disturbance or vibration and do not advised
Then shape.Surface is formed in a mold in a manner of increasing freedom degree by using these equipment, can get above-mentioned optical substrate
Structured surface have the regular or irregular prism dimensionally changed and a plane.
It is using photocuring about the solidification of S-shaped optical prism array, in Examples 1 to 6, ultraviolet curable resin uses
Acrylate, roll-in can solidified formings by ultraviolet light irradiation.
In another embodiment of the utility model, UV resin is replaced using thermoplastic plastic, S-shaped optical prism array can lead to
It crosses Hot-press cooling and carries out solidified forming, be coated with after thermoplastic plastic is heated, formed after gradually being cooled down in nipping process, such as Fig. 7
Shown, chill roll can be used in cooling.
Preferably, first coating reflecting coating in step b, it is then coated with light-absorbing coating.Coating method include coating, spraying,
Sputter etc..
The performance test results
Using the anti-light curtain of the S-shaped of the embodiments of the present invention 1~6 as rear projection screen, visual performance test is carried out, together
When with commercially available anti-light curtain SupernovaTMSTS (DNP) and CBSP (and annotating science and technology) are as a comparison.Test index includes not
Your line, brightness uniformity, yield value, contrast and half angle of view etc., the results are shown in Table 2.
Wherein the survey calculation method of every test index is as follows:
Brightness uniformity [%]=(brightnessmin/ brightnessmax)×100
Wherein, brightnessminIt is the brightness minimum value in the brightness measured in the region for being divided into nine parts.BrightnessmaxIt is
The brightness maxima in brightness measured in the region for being divided into nine parts.
Contrast=white the image brightness in the bright room/black image brightness in bright room
Yield value=π × (the white image brightness in darkroom (nit)/projector illumination (lux))
Wherein, the white image brightness in bright room refers to that projector projects 100% complete white pattern to reflection in the case where there is environment light lamp source
The center luminance that type screen measures.The bright black image brightness in room refers to that projector's projection 100% is complete in the case where there is environment light lamp source
The center luminance that black pattern is measured to reflection type screen.The white image brightness in darkroom refers to the projector under no environment light lamp source
The center luminance that 100% complete white pattern of projection is measured to reflection type screen.Projector illumination refers under no environment light lamp source
The brightness value that light source of projector measures.Half angle of view refers to angle corresponding when yield value is a half value, is related to ornamental
Angular field of view width.
The performance test results of the anti-light curtain of table 2
| Moir patterns | Brightness uniformity | Yield value | Contrast | Half angle of view | |
| SupernovaTM STS | ○ | 89% | 0.95 | 39 | 30° |
| CBSP | × | 80% | 0.37 | 22 | 80° |
| Embodiment 1 | ○ | 84% | 0.56 | 25 | 65° |
| Embodiment 2 | ○ | 88% | 0.55 | 24 | 70° |
| Embodiment 3 | ◎ | 92% | 0.54 | 23 | 80° |
| Embodiment 4 | ◎ | 90% | 0.55 | 24 | 75° |
| Embodiment 5 | ○ | 87% | 0.33 | 15 | 70° |
| Embodiment 6 | ◎ | 90% | 0.30 | 19 | 75° |
In table 2, symbol corresponds to effect are as follows: ◎: good；Zero: sub-optimal；△: in；×: it is poor.
It as shown in Table 2, is linear anti-light curtain, the implementation of the utility model compared to existing commercially available prism array
The anti-light curtain of the S-shaped of example 1~6 uses S-shaped wave in the horizontal direction and is arranged, changes cloth curtain structure and picture element spacing
Horizontal symmetrical relationship, improve the uniformity of reflecting brightness, moir patterns, brightness uniformity and half angle of view etc. test in have
It is obviously improved.Especially it is possible to prevente effectively from the optical interference phenomenas such as moir patterns, improve the uniformity of reflecting brightness, make appearance
Flaw is not obviously, effectively promotes the visual sense of beauty that client watches.
The preferred embodiment created to the utility model above is illustrated, but the utility model is created not
It is limited to embodiment, those skilled in the art are various etc. without prejudice to can also make under the utility model precondition for innovation
Same variation or replacement, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (8)
1. a kind of anti-light curtain of S-shaped comprising substrate layer and the optical prism array on the substrate layer outer surface,
It is characterized in that, the optical prism array is that several curved sections of wave S-shaped in the horizontal direction closely arranged are three
Angular prism；The downside of the prism is coated with reflecting coating；The upper side of the prism is coated with light-absorbing coating.
2. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the downside of the prism and the substrate layer
Angle α is 20 °~50 °；The angle β of the upper side of the prism and the substrate layer is 45 °~90 °.
3. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the S-shaped that the prism is in the horizontal direction is bent
The curvilinear path being repeated cyclically in line is along horizontal axis in two reversed tangent arcs, wherein upward arc length L1
It is 100-400 μm, camber H1It is 1-6 μm；Downward arc length L2It is 100-400 μm, camber H2It is 1-6 μm.
4. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the S-shaped that the prism is in the horizontal direction is bent
The vertical height for the curvilinear path being repeated cyclically in line is 2-12 μm；Lateral length is 200-800 μm.
5. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the substrate layer thickness d1It is 20-1000 μm；It is described
The thickness d of optical prism array2It is 20-500 μm；Reflecting coating with a thickness of 0.1-20 μm；Light-absorbing coating with a thickness of 1-20 μ
m。
6. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the substrate layer material is glass or plastics.
7. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the optical prism array material be UV resin or
Thermoplastic plastic.
8. the anti-light curtain of S-shaped as described in claim 1, which is characterized in that the reflecting coating is titanium oxide, zinc oxide, oxygen
Change zirconium, aluminium oxide, barium sulfate, mica or silica；The light-absorbing coating is carbon black, iron oxide black or black spinel.
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| CN201821709190.4U CN209070299U (en) | 2018-10-22 | 2018-10-22 | A kind of anti-light curtain of S-shaped |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821709190.4U CN209070299U (en) | 2018-10-22 | 2018-10-22 | A kind of anti-light curtain of S-shaped |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471327A (en) * | 2018-10-22 | 2019-03-15 | 江阴通利光电科技有限公司 | A kind of anti-light curtain of S-shaped and preparation method thereof |
| CN111624844A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
| TWI742592B (en) * | 2020-03-30 | 2021-10-11 | 弘勝光電股份有限公司 | Structure of short-focus anti-light curtain |
| CN114075793A (en) * | 2021-11-24 | 2022-02-22 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | Projection curtain surface structure resisting laser speckle and preparation method |
-
2018
- 2018-10-22 CN CN201821709190.4U patent/CN209070299U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471327A (en) * | 2018-10-22 | 2019-03-15 | 江阴通利光电科技有限公司 | A kind of anti-light curtain of S-shaped and preparation method thereof |
| TWI742592B (en) * | 2020-03-30 | 2021-10-11 | 弘勝光電股份有限公司 | Structure of short-focus anti-light curtain |
| CN111624844A (en) * | 2020-07-28 | 2020-09-04 | 成都菲斯特科技有限公司 | Optical projection screen and projection system |
| CN114075793A (en) * | 2021-11-24 | 2022-02-22 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | Projection curtain surface structure resisting laser speckle and preparation method |
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