CN209231705U - A kind of anti-light curtain easy to manufacture - Google Patents

Abstract

The utility model discloses a kind of anti-light curtains easy to manufacture comprising substrate layer and is set to the positive optical prism array of the substrate layer, the optical prism array is closely arranged by the prism that several sections in the horizontal direction are triangle；It is characterized in that, being evenly distributed with black particles in the optical prism array, the downside of the prism is coated with reflecting coating, and the substrate layer backside coating has black light-absorption layer.In the utility model, the black particles and the black light-absorption layer can fully absorb environment light as twice extinction mechanism, even if the upper side of each prism is not coated by light absorbent, also it can be reduced the imaging of offside reflection under the influence of the reflection light from environment avoids, therefore in production, prism structure surface only need to eliminate the coating process of upper side light-absorbing coating in downside primary coating reflecting coating, it is greatly improved production efficiency, production cost is effectively reduced.

Description

A kind of anti-light curtain easy to manufacture

Technical field

The utility model belongs to anti-light curtain technical field, and in particular to a kind of anti-light curtain and its preparation side easy to manufacture Method.

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.When specific works, usually the downside of prism is for reflecting from projector Imaging, and in order to promote client visual perception avoids upper side light of the reflection from external environment and inteference imaging, often The upper surface of prism needs to be processed into extinction face, therefore prism structure surface needs to do coating treatment twice when making, and by Smaller in prism dimensions, operation requirement is more accurate, influences production efficiency and yields, also increases production cost indirectly.

Utility model content

Therefore, coating treatment twice is needed for the prism structure surface of reflective viewing screen in the prior art and influence to produce The technical issues of efficiency, the purpose of this utility model is to provide a kind of anti-light curtain easy to manufacture, the prisms of the anti-light curtain Body structure surface only needs primary coating to handle, and is greatly improved production efficiency, and production cost is effectively reduced.

The anti-light curtain of the utility model include substrate layer and be set to the positive optical prism array of the substrate layer, institute Optical prism array is stated closely to be arranged by the prism that several sections in the horizontal direction are triangle；It is characterized in that, Black particles are evenly distributed in the optical prism array, the downside of the prism is coated with reflecting coating, the substrate Layer backside coating has black light-absorption layer.

In the utility model, by the way that the black particles are added in the optical prism array, it can be absorbed and be radiated at The environment light of each prism upper side avoids reflecting to client direction, that is, can avoid interference with imaging.Meanwhile the base The environment light through the optical prism array can be absorbed in the black light-absorption layer at the material layer back side, further strengthens extinction Effect.In the utility model, the black particles and the black light-absorption layer can fully absorb environment as twice extinction mechanism Light also can be reduced the reflection light from environment and avoid influencing downside even if the upper side of each prism is not coated by light absorbent The imaging of reflection, therefore in production, prism structure surface need to only be eliminated in downside primary coating reflecting coating The coating process of upper side light-absorbing coating, is greatly improved production efficiency, production cost is effectively reduced.

Preferably, the upper side of the prism has the roughening micro-structure of extinction.The upper side of the prism it is coarse Change micro-structure, can be used as first of extinction mechanism, can effectively absorb the light from environment.The anti-light curtain of the preferred embodiment Roughening micro-structure including surface, internal black particles and the black light-absorption layer at the back side have three extinction mechanism altogether, There is excellent assimilation effect to environment light, and then can effectively avoid environment light to the interference phenomenon of imaging, effectively promote visitor The ornamental visual perception in family.

Preferably, surface roughness Rz value (roughness profile maximum peak height and the maximum valley depth of the upper side of the prism The sum of) it is 1 μm~7 μm.

Preferably, the black particles are carbon black, iron oxide black or black spinel, the black particles account for the optical prism battle array The 0.1%~2% of column gross weight.

Preferably, the substrate layer material is glass or plastics.

Wherein plastics can use polyester resin (polyester resin), polyacrylate resin (polyacrylate Resin), polyolefin resin (polyolefin resin), polycarbonate resin (polycarbonate resin), poly- amino Formate resin (polyurethane resin), Triafol T (TAC), thermoplastic polyurethane elastomer rubber (TPU), Polyurethane (PU) or polyvinyl chloride (PVC) etc..

Preferably, the optical prism array material is UV 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 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 substrate layer is with a thickness of 20-1000 μm；The optical prism array with a thickness of 20-500 μm；Instead Light coating with a thickness of 0.1-20 μm, preferably 5~20 μm.When optical prism array surface has roughening micro-structure, coating The thickness of reflectorized material should be at 10 μm or more, to ensure that roughened textures are covered and keep planarization by reflectorized material.

The anti-light curtain of the utility model can be prepared by following steps:

A) optical prism array is made by hard mold and mantle technique: the UV resin for being uniformly mixed with black particles in advance is applied Cloth in substrate front, using surface there is the mold roller of striped micro-structure to carry out roll-in, UV curing molding of arranging in pairs or groups in nipping process UV resin coining on substrate layer is formed by curing shaggy optical prism array by technology；Or it will uniformly be mixed in advance The thermoplastic plastic of black particles is coated on substrate front, using surface there is the mold roller of striped micro-structure to carry out roll-in, roller Thermoplastic plastic coining on substrate layer is formed by curing shaggy by collocation Hot-press cooling curing molding technology during pressure Optical prism array；

B) reflectorized material optical treatment: is coated to the downside of optical prism array；

C) after step c optical treatment, by the back side blacking of substrate.

In the step a, there is the mold roller of striped micro-structure the production of fine turning lathe processing technology can be used on surface, usually Use roller coining (Rollerimprint) and nanometer transfer printing (Nanoimprinting lithography) technology, principle Be using Ultraprecision Machining, such as with shape monocrystalline diamond knife process a plurality of knife mark on the coat of metal of drum die with Form the mold roller with striped micro-structure.

In the step a, the solidified forming of optical prism array forms structure using photocuring or Hot-press cooling.

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.

In the step a, there is the mold roller of striped micro-structure can also carry out surface roughening treatment in advance on surface, specifically Its surface can be made to generate irregular wedgelike micro-structure by electroplating technology in its electroplating surface mist nickel layer；Or to its carry out Sandblasting operation hits its surface by glass sand and forms irregular pothole.It is carried out using the mold roller through surface roughening treatment The optical prism array of imprinting moulding can form the roughening micro-structure of extinction.

Preferably, when coating reflectorized material, the modes such as coating, spraying, sputter can be used in step b.

It should be noted that coating the thickness of reflectorized material when optical prism array surface has roughening micro-structure It should be at 10 μm or more, to ensure that roughened textures are covered and keep planarization by reflectorized material.

The utility model has the following beneficial effects:

1, in the utility model, by the way that the black particles are added in the optical prism array, irradiation can be absorbed In the environment light of each prism upper side, avoid reflecting to client direction, that is, imaging can be avoided interference with.Meanwhile it is described The environment light through the optical prism array can be absorbed in the black light-absorption layer at the substrate layer back side, further strengthens and inhales Light effect.In the utility model, the black particles and the black light-absorption layer can fully absorb ring as twice extinction mechanism Border light also can be reduced the reflection light from environment and avoid influencing downside even if the upper side of each prism is not coated by light absorbent The imaging of face reflection, therefore in production, prism structure surface need to only be saved in downside primary coating reflecting coating The coating process of upper side light-absorbing coating, is greatly improved production efficiency, production cost is effectively reduced.

2, in the utility model, the upper side of the prism has the roughening micro-structure of extinction.The upside of the prism The roughening micro-structure in face can be used as first of extinction mechanism, can effectively absorb the light from environment.The preferred embodiment Anti-light curtain includes that the roughening micro-structure, internal black particles and the black light-absorption layer at the back side on surface have three suctions altogether Ray machine system has excellent assimilation effect to environment light, and then can effectively avoid environment light to the interference phenomenon of imaging, effectively Promote the visual perception that client watches.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the anti-light curtain of the utility model；

Fig. 2 is the micrometer microscope figure of the roughening micro-structure of the prism surface of the anti-light curtain of the utility model；

Fig. 3 is the extinction schematic diagram of the roughening micro-structure of the prism surface of the anti-light curtain of the utility model；

Fig. 4 is the schematic diagram of three extinction mechanism of the anti-light curtain of the utility model；

Fig. 5 is the production process schematic diagram of the anti-light curtain of the utility model.

Appended drawing reference

Substrate layer 1, optical prism array 2 are roughened micro-structure 21, reflecting coating 22, black particles 23, light-absorption layer 3.

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.

Embodiment

Fig. 1 show the structural schematic diagram of the anti-light curtain of some preferred embodiments of the utility model comprising substrate layer 1 And it is set to the positive optical prism array 2 of substrate layer 1, optical prism array 2 is three by several sections in the horizontal direction Angular prism is closely arranged；The upper side of each prism has the roughening micro-structure 21 of extinction, and downside is coated with anti- Light coating 22；Black particles 23 are evenly distributed in each prism.1 backside coating of substrate layer has black light-absorption layer 3.

In the utility model, the upper side of each prism has (micrometer microscope figure such as Fig. 2 of roughening micro-structure 21 of extinction It is shown), as first of extinction mechanism, it can effectively absorb the light (as shown in Figure 3) from environment.Preferably, prism is upper The surface roughness Rz value of side is 1 μm~7 μm.

The black particles 23 being added in optical prism array 2 are used as second extinction mechanism, can be absorbed into prism table Face is roughened the environment light of micro-structure, further strengthens extinction effect.Preferably, black particles 23 are carbon black, iron oxide black or black point Spar, black particles account for the 0.1%~2% of optical prism array gross weight.

The black light-absorption layer 3 at 1 back side of substrate layer is used as third road extinction mechanism, can be absorbed through optical prism array Environment light, further reinforcing extinction effect.

To sum up, the anti-light curtain of the utility model preferred embodiment includes the roughening micro-structure on surface, internal black Particle and the black light-absorption layer at the back side have three extinction mechanism (as shown in Figure 4) altogether, have excellent absorption to environment light Effect also can be reduced the imaging of offside reflection under the influence of the reflection light from environment avoids even if being not coated by light absorbent, It effectively avoids environment light to the interference phenomenon of imaging, effectively promotes the visual perception that client watches.Therefore in production, prism Body structure surface only need to eliminate the coating process of upper side light-absorbing coating in downside primary coating reflecting coating 22, can Production efficiency is greatly improved, production cost is effectively reduced.

About material,

1 material of substrate layer is glass or plastics.It is preferred that bent glass or plastics.

Wherein plastics can use polyester resin (polyester resin), polyacrylate resin (polyacrylate Resin), polyolefin resin (polyolefin resin), polycarbonate resin (polycarbonate resin), poly- amino Formate resin (polyurethane resin), Triafol T (TAC), thermoplastic polyurethane elastomer rubber (TPU), Polyurethane (PU) or polyvinyl chloride (PVC) etc..

Preferably, 2 material of optical prism array is UV resin (ultraviolet curable resin) or thermoplastic plastic.

UV resin is selected from acrylate, Epocryl, aliphatic urethane acrylate resin, fragrance Adoption chlorinated polyethylene and polyester acrylate resin etc. can be through UV radiation curing resins.

Preferably, reflecting coating 22 be titanium oxide, zinc oxide, zirconium oxide, aluminium oxide, barium sulfate, mica, silica or its The reflectorized material that he is applicable in.

Preferably, the downside of prism and the angle α of substrate layer are 20 °~50 ° preferably 35 °~45 ° more preferable 35 °, the angle α Spending the smaller inverted image for reflexing to ceiling can be more obvious；The upper side of prism and the angle β of substrate layer are 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 surface area ratio and reduce drop Low-light level.

Preferably, substrate layer is with a thickness of 20-1000 μm；The thickness (i.e. the height of prism) of optical prism array is 20-500 μm；Reflecting coating with a thickness of 5-20 μm preferably 10~20 μm.

The preparation process of the anti-light curtain of the utility model preferred embodiment is as shown in figure 5, steps are as follows:

A) surface roughening of mold roller: there is the mold roller of striped micro-structure to turning rear surface, pass through electroplating technology In its electroplating surface mist nickel layer, its surface is made to generate irregular wedgelike micro-structure；

B) optical prism array is made by hard mold and mantle technique: will be uniformly mixed with the coating of black particles UV resin in advance In substrate front, roll-in is carried out using the mold roller through step a surface roughening, UV curing molding skill of arranging in pairs or groups in nipping process UV resin coining on substrate layer is formed by curing shaggy optical prism array by art；

C) optical treatment: reflectorized material is coated to the downside of optical prism array, it is ensured that reflectorized material ties roughening Structure covers and keeps planarization；

D) back side blacking: after step c optical treatment, by the back side blacking (being had been omitted from the block diagram) of substrate.

In addition, there is the mold roller of striped micro-structure about surface, fine turning lathe processing technology system can be used in step a Make, imprint (Rollerimprint) and nanometer transfer printing (Nanoimprinting lithography) technology usually using roller, Its principle is to utilize Ultraprecision Machining, such as process a plurality of knife mark in the metal-plated of drum die to shape monocrystalline diamond knife To form the mold roller with striped micro-structure on layer.

In step a, sandblasting operation realization is also can be used in the surface roughening of the mold roller with striped micro-structure, passes through glass Glass sand hits die roll surface and forms irregular pothole.

Step b can also be completed by thermoplastic shaping technique, specifically: it will uniformly be mixed with black particles thermoplastic plastic in advance It is coated on substrate front, roll-in is carried out using the mold roller through step a surface roughening, collocation Hot-press cooling is solid in nipping process Change forming technique, the thermoplastic plastic coining on substrate layer is formed by curing shaggy optical prism array.

The performance test results

Table 1 show the relevant parameter of the anti-light curtain of the utility model preferred embodiment 1~7 and comparative example 1 with And anti-light the performance test results.

Wherein in comparative example 1, optical prism array is embossed into using common mold roller (surface free roughening treatment) Type is also not added with black particles in optical prism array.

In embodiment 1, embodiment 2, embodiment 4 and embodiment 7, optical prism array uses common mold roller (surface Without roughening treatment) imprinting moulding, the black particles of different weight percentage composition are added in optical prism array.

In embodiment 3, embodiment 5 and embodiment 6, optical prism array uses mold of the surface through nickel plating roughening treatment Roller imprinting moulding, simultaneously added with the black particles of different weight percentage composition in optical prism array.

Using the anti-light curtain of comparative example 1 and the embodiments of the present invention 1~7 as preceding throwing screen, visual performance is carried out Test.Performance indicator includes the white image brightness in bright room, the black image brightness in bright room and contrast.

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.Contrast=white the image brightness in the bright room/black image brightness in bright room.

The relevant parameter of the anti-light curtain of 1 Examples 1 to 6 of table

As shown in Table 1, compared to the anti-light curtain of comparative example 1, the embodiments of the present invention 1, embodiment 2, embodiment 4 In embodiment 7, the black particles of different weight percentage composition are added in optical prism array, contrast, which has, significantly to be mentioned It rises.And embodiment 3, embodiment 5 and embodiment 6 are then that nickel plating roughening treatment has been carried out to the surface of optical prism array, The contrast measured is further promoted.The reason is that increased roughening micro-structure and black particles can effectively absorb Environment light increases the absorptivity of environment light, and the interference for mitigating environment light increases contrast, and then can effectively promote what client watched Visual perception.

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 (7)

1. a kind of anti-light curtain easy to manufacture comprising substrate layer and it is set to the positive optical prism array of the substrate layer, The optical prism array is closely arranged by the prism that several sections in the horizontal direction are triangle；Its feature exists In being evenly distributed with black particles in the optical prism array, the downside of the prism is coated with reflecting coating, the base Material layer backside coating has black light-absorption layer.

2. anti-light curtain easy to manufacture as described in claim 1, which is characterized in that the upper side of the prism has extinction It is roughened micro-structure.

3. anti-light curtain easy to manufacture as claimed in claim 2, which is characterized in that the rough surface of the upper side of the prism Spending Rz value is 1 μm~7 μm.

4. anti-light curtain easy to manufacture as described in claim 1, which is characterized in that the black particles be carbon black, iron oxide black or Black spinel, the black particles account for the 0.1%~2% of the optical prism array gross weight.

5. anti-light curtain easy to manufacture as described in claim 1, which is characterized in that the substrate layer material is glass or modeling Material.

6. anti-light curtain easy to manufacture as described in claim 1, which is characterized in that the optical prism array material is UV tree Rouge or thermoplastic plastic.

7. anti-light curtain easy to manufacture as described in claim 1, which is characterized in that the reflecting coating is titanium oxide, oxidation Zinc, zirconium oxide, aluminium oxide, barium sulfate, mica or silica.