CN108957938A - Projection film with include its optical projection system - Google Patents
Projection film with include its optical projection system Download PDFInfo
- Publication number
- CN108957938A CN108957938A CN201810864243.8A CN201810864243A CN108957938A CN 108957938 A CN108957938 A CN 108957938A CN 201810864243 A CN201810864243 A CN 201810864243A CN 108957938 A CN108957938 A CN 108957938A
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- Prior art keywords
- light
- projection film
- fluorescent material
- wavelength
- excitation
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/567—Projection screens for colour projection
Abstract
This application provides provide a kind of projection film and include its optical projection system.The projection film includes: fluorescence coating, including fluorescent material, and fluorescent material is red light flourescent material, green-emitting fluorescent material or blue-light fluorescent material, and red light flourescent material issues feux rouges under the excitation for the exciting light that wavelength is 200nm~325nm；Green-emitting fluorescent material issues green light under the excitation for the exciting light that wavelength is 230nm~380nm；Blue-light fluorescent material issues blue light under the excitation for the exciting light that wavelength is 300nm~400nm, and fluorescent material does not shine under the excitation of exciting light of the wavelength greater than 400nm.In the projection film, feux rouges, blue light or green light are mainly shone by diffraction, so that the mist degree of projection film is smaller, and light transmittance is higher.
Description
Technical field
This application involves display fields, in particular to a kind of projection film and including its optical projection system.
Background technique
The common solution of transparence display industry has line holographic projections film, PDLC, OLED at present, the mechanism description realized
It is as follows:
Line holographic projections film: by the way that scattering knot is arranged between coating scattering coating or substrate in a manner of doubling on substrate
Structure layer, the mechanism of projection are by the refractive index between the light diffusion particle and resin in scattering coating or diffusing structure layer
Difference is scattered the light that comes of projection to realize.
PDLC: i.e. intelligent fenestrated membrane realizes the different degrees of inclined of the liquid crystal being dispersed in resin by the variation of electric field
Turn, to realize the variation of the transmitance of diaphragm, the mechanism of projection is to scatter light using the refringence of liquid crystal and resin
Line, and this refringence is to realize variation by adjusting voltage.
OLED: such method is exactly the display screen of one piece of OLED in fact, carries out picture using self-luminescent material without projecting
Face is shown.
The effect of line holographic projections film and the number of scattering particles are positively correlated, it is desirable to obtain higher brightness and large viewing
Drop shadow effect needs more scattering particles, but more scattering particles means higher mist degree, translucency (visible light
Transmitance) be affected.The limitation of PDLC is the same with holographic film, and advantage is exactly that drop shadow effect can be according to environment light
Variation realizes variation by adjusting voltage, but the problem of both do not solve preferable drop shadow effect and translucency still and get both.
The light transmittance with high costs and visible light of OLED is less than 50%
Summary of the invention
The main purpose of the application is to provide a kind of projection film and the optical projection system including it, to solve in the prior art
Projection film visible light the lower problem of light transmittance.
To achieve the goals above, according to the one aspect of the application, a kind of projection film is provided, which includes:
Fluorescence coating, including fluorescent material, above-mentioned fluorescent material be red light flourescent material, green-emitting fluorescent material or blue-light fluorescent material, on
It states red light flourescent material and issues feux rouges under the excitation for the exciting light that wavelength is 200nm~325nm；Above-mentioned green-emitting fluorescent material exists
Wavelength issues green light under the excitation for the exciting light of 230nm~380nm；Above-mentioned blue-light fluorescent material wavelength be 300nm~
Blue light is issued under the excitation of the exciting light of 400nm, above-mentioned fluorescent material is not sent out under the excitation of exciting light of the wavelength greater than 400nm
Light.
Further, above-mentioned red light flourescent material issues wavelength under the excitation for the exciting light that wavelength is 200nm~280nm
For the feux rouges of 550~700nm, above-mentioned green-emitting fluorescent material issues wave under the excitation for the exciting light that wavelength is 260nm~320nm
The green light of a length of 500~550nm, above-mentioned blue-light fluorescent material issue under the excitation for the exciting light that wavelength is 350nm~400nm
Wavelength is the blue light of 380~570nm.
Further, above-mentioned fluorescence coating further includes resin, and above-mentioned fluorescent material is dispersed in above-mentioned resin, and above-mentioned resin is
Light-cured resin, heat reactive resin and/or thermoplastic resin.
Further, above-mentioned resin is pressure sensitive adhesive, and above-mentioned fluorescence coating further includes solvent, and preferably above-mentioned solvent is N- methyl pyrrole
Pyrrolidone, further preferably in above-mentioned fluorescence coating, the weight percent of above-mentioned pressure sensitive adhesive is 5%~80%, above-mentioned N- methyl pyrrole
The weight percent of pyrrolidone is 10%~90%, and the weight percent of above-mentioned fluorescent material is 1.0%~10%.
Further, above-mentioned projection film further include: substrate, above-mentioned fluorescence coating are arranged on the surface of above-mentioned substrate.
It further, is first base material and the second substrate respectively there are two above-mentioned substrates, above-mentioned fluorescence coating is arranged above-mentioned
Between first base material and above-mentioned second substrate.
Further, the light transmittance of above-mentioned substrate is greater than 80%.
Further, the mist degree of above-mentioned substrate is less than 3%.
Further, the light transmittance of above-mentioned substrate is greater than 90%, and the mist degree of above-mentioned substrate is less than 1%.
According to the another aspect of the application, a kind of optical projection system, including projection film are provided, which is on any
The projection film stated.
Using the technical solution of the application, the fluorescent material in the fluorescence coating can issue corresponding under the excitation of ultraviolet light
Light, when fluorescent material is red light flourescent material, under the excitation for the exciting light that wavelength is 200nm~325nm, above-mentioned feux rouges is glimmering
Luminescent material issues feux rouges；When fluorescent material is green-emitting fluorescent material, in the excitation for the exciting light that wavelength is 30nm~380nm
Under, green-emitting fluorescent material issues green light；When fluorescent material is blue-light fluorescent material, in the excitation that wavelength is 300nm~400nm
Light issues blue light.The fluorescence coating that different fluorescent materials are formed is set by the projection film, is swashed by the ultraviolet light of different-waveband
Hair, the light of available different colours.And in the projection film, feux rouges, blue light or green light are mainly shone by diffraction, are made in this way
The mist degree for obtaining projection film is smaller, and light transmittance is higher.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the projection film provided according to a kind of exemplary embodiment of the application；
Fig. 2 shows the structural schematic diagrams for the projection film that a kind of embodiment of the application provides；
Fig. 3 to Fig. 5 shows the schematic diagram of the luminescent spectrum of three kinds of fluorescence coatings and the spectrum of its corresponding exciting light.
Wherein, the above drawings include the following reference numerals:
1, substrate；2, fluorescence coating；11, first base material；12, the second substrate.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be understood that when element (such as layer, film, region or substrate) is described as at another element "upper", this yuan
Part can be directly on another element, or intermediary element also may be present.Moreover, in specification and claims, when
When description has element " connected " to another element, which " can be directly connected to " to another element, or pass through third element
" electrical connection " is to another element.
As background technique is introduced, the light transmittance of the visible light of projection film in the prior art is lower, in order to solve
Technical problem as above, present applicant proposes a kind of projection film and including its optical projection system.
In a kind of typical embodiment of the application, a kind of projection film is provided, as shown in Figure 1, the projection film includes
Fluorescence coating 2, fluorescence coating include fluorescent material, and above-mentioned fluorescent material is red light flourescent material, green-emitting fluorescent material or blue phosphor
Material, above-mentioned red light flourescent material issue feux rouges under the excitation for the exciting light that wavelength is 200nm~325nm；Above-mentioned green light is glimmering
Luminescent material issues green light under the excitation for the exciting light that wavelength is 230nm~380nm；Above-mentioned blue-light fluorescent material is in wavelength
Blue light is issued under the excitation of the exciting light of 300nm~400nm, above-mentioned fluorescent material swashs exciting light of the wavelength greater than 400nm
It gives and does not shine.
The fluorescent material in fluorescence coating in above-mentioned projection film can issue corresponding light under the excitation of ultraviolet light, when glimmering
When luminescent material is red light flourescent material, under the excitation for the exciting light that wavelength is 200nm~325nm, above-mentioned red light flourescent material
Issue feux rouges；When fluorescent material is green-emitting fluorescent material, under the excitation for the exciting light that wavelength is 300nm~380nm, green light
Fluorescent material issues green light；When fluorescent material is blue-light fluorescent material, in the exciting light that wavelength is 300nm~400nm, issue
Blue light.Setting the fluorescence coating that different fluorescent materials are formed for the projection film can be obtained by the ultraviolet excitation of different-waveband
To the light of different colours.And in the projection film, feux rouges, blue light or green light are mainly shone by diffraction, so that projection film
Mist degree it is smaller, light transmittance is higher.
Also, the luminescent color of the above-mentioned fluorescence coating of the application has corresponding relationship with the wavelength of exciting light, so that logical
It crosses the wavelength of adjustment exciting light and cooperates corresponding fluorescent powder that can obtain desired luminescent color.
Above-mentioned red light flourescent material, green-emitting fluorescent material and blue-light fluorescent material can be independently selected from containing rare earth member
In the inorganic nanometer oxide of element, the luminous organic material containing unsaturated bond and the metal-organic complex containing rare earth element extremely
Few one kind.Certain above-mentioned red light flourescent material, green-emitting fluorescent material and blue-light fluorescent material be not identical, and is not limited to above-mentioned
Different materials, can also be other can issue feux rouges or green under the excitation of the exciting light with above-mentioned excitation wavelength
The fluorescent material of light, those skilled in the art can select suitable red light flourescent material or green-emitting fluorescent material according to the actual situation
Material.
In a kind of embodiment of the application, as shown in figure 3, above-mentioned red light flourescent material is 200nm~280nm's in wavelength
The feux rouges that wavelength is 550~700nm is issued under the excitation of exciting light, as shown in figure 4, above-mentioned green-emitting fluorescent material is in wavelength
The green light that wavelength is 500~550nm is issued under the excitation of the exciting light of 260nm~320nm, as shown in figure 5, above-mentioned blue phosphor
Layer includes blue-light fluorescent material, and above-mentioned blue-light fluorescent material issues wave under the excitation for the exciting light that wavelength is 350nm~400nm
The blue light of a length of 380~570nm.
In a kind of embodiment of the application, above-mentioned fluorescent material includes organic fluorescence materials and/or inorganic fluorescent material, can
To only include organic fluorescence materials, inorganic fluorescent material can also be only included, can also simultaneously include organic fluorescence materials and nothing
Machine fluorescent material.
In another embodiment of the application, above-mentioned fluorescent material includes inorganic fluorescent material, and above-mentioned inorganic fluorescent material
The partial size of material is less than 400nm.It can be further ensured that the mist degree for reducing projection film in this way, improve its light transmittance.
In another embodiment in the application, above-mentioned fluorescence coating 2 further includes resin, and above-mentioned fluorescent material is dispersed in above-mentioned
In resin, above-mentioned resin is light-cured resin, heat reactive resin and/or thermoplastic resin.Those skilled in the art can basis
Actual conditions select suitable resin as the material of main part of fluorescence coating.
In order to further ensure fluorescence coating is more stable, reliability is higher, and convenient for production, a kind of embodiment of the application
In, above-mentioned resin is pressure sensitive adhesive (PSA glue), and above-mentioned fluorescence coating 2 further includes solvent, which can dissolve corresponding feux rouges fluorescence
Material and green-emitting fluorescent material.
In order to preferably dissolve corresponding red light flourescent material and green-emitting fluorescent material, in a kind of embodiment of the application,
Above-mentioned solvent is N-Methyl pyrrolidone.
In order to further ensure fluorescence coating can be formed preferably, and it is more stable, in a kind of embodiment of the application, on
It states in fluorescence coating 2, the weight percent of above-mentioned pressure sensitive adhesive is 5%~80%, the weight percent of above-mentioned N-Methyl pyrrolidone
It is 10%~90%, the weight percent of above-mentioned fluorescent material is 1.0%~10%.
In the manufacturing process of fluorescence coating, PSA glue is added in clean conical flask, NMP (N- crassitude is added
Ketone), mixed liquor is diluted to 15% and consolidates and contains, after magnetic agitation stirs 10min, is added corresponding fluorescent material, 40~50 DEG C
After magnetic stirs 0.5h, the coating fluid of fluorescence coating is obtained.Finally, applied coating solution, then solidifies, corresponding fluorescence coating is obtained.
It should be noted that the addition sequence of above-mentioned pressure sensitive adhesive and solvent and being not fixed, can be added together, it can also
To be added simultaneously, those skilled in the art can select suitable order of addition according to the actual situation, not be described in more detail here.
In order to facilitate the production of fluorescence coating, and fluorescence coating is protected, obtains the projection film for being not easy to be damaged, such as Fig. 1
Shown, in a kind of embodiment of the application, above-mentioned projection film further includes substrate 1, and above-mentioned substrate 1 is arranged in above-mentioned fluorescence coating 2
On surface.
In order to preferably be protected to fluorescence coating, in a kind of embodiment of the application, as shown in Fig. 2, above-mentioned substrate 1 has
Two, be first base material 11 and the second substrate 12 respectively, the above-mentioned setting of fluorescence coating 2 is in above-mentioned first base material 11 and above-mentioned second base
Between material 12.
Substrate in the application can be any transparent substrate in the prior art, ratio PET, PE etc., ability
Field technique personnel can select suitable material to form the substrate of the application according to the actual situation.
In order to further ensure projection film light transmittance with higher, in a kind of embodiment of the application, above-mentioned substrate 1
Light transmittance is greater than 80%.
Meanwhile in order to enable projection film has lesser mist degree, in a kind of embodiment of the application, the mist degree of above-mentioned substrate
Less than 3%.
In the another embodiment of the application, the light transmittance of above-mentioned substrate 1 is greater than 90%, and the mist degree of above-mentioned substrate 1 is less than
1%.It can be further ensured that projection film light transmittance with higher and lesser mist degree in this way, so that the drop shadow effect of image is more
It is good, viewer is further ensured with preferable viewing experience.
It should be noted that the light transmittance in the application just refers to the light transmittance of visible light.
In the typical embodiment of the another kind of the application, a kind of optical projection system is provided, which includes projection
Film, the projection film are above-mentioned any projection film.
The optical projection system is due to above-mentioned projection film, thus light transmittance with higher and lesser mist degree, so that
Viewer has good viewing experience.
Certainly, in a kind of embodiment of the application, above-mentioned optical projection system further includes laser, and the laser is for sending pair
The exciting light answered, so that projection film be excited to show corresponding image.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The embodiment of body illustrates the technical solution of the application.
It can be seen from the above description that the application the above embodiments realize following technical effect:
1), the fluorescent material in the fluorescence coating in the projection film of the application can issue corresponding under the excitation of ultraviolet light
Light, when fluorescent material is red light flourescent material, under the excitation for the exciting light that wavelength is 235nm~325nm, above-mentioned feux rouges is glimmering
Luminescent material issues feux rouges；When fluorescent material is green-emitting fluorescent material, in the excitation for the exciting light that wavelength is 30nm~380nm
Under, green-emitting fluorescent material issues green light；When fluorescent material is blue-light fluorescent material, in the excitation that wavelength is 300nm~400nm
Light issues blue light.The fluorescence coating that different fluorescent materials are formed is set by the projection film, is swashed by the ultraviolet light of different-waveband
Hair, the light of available different colours.And in the projection film, feux rouges, blue light or green light are mainly shone by diffraction, are made in this way
The mist degree for obtaining projection film is smaller, and light transmittance is higher.
2), the optical projection system of the application is due to above-mentioned projection film, thus light transmittance with higher with it is lesser
Mist degree, so that viewer has good viewing experience.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of projection film, which is characterized in that the projection film includes:
Fluorescence coating (2), including fluorescent material, the fluorescent material are red light flourescent material, green-emitting fluorescent material or blue phosphor
Material, the red light flourescent material issue feux rouges under the excitation for the exciting light that wavelength is 200nm~325nm；The green light is glimmering
Luminescent material issues green light under the excitation for the exciting light that wavelength is 230nm~380nm；The blue-light fluorescent material is in wavelength
Blue light is issued under the excitation of the exciting light of 300nm~400nm, the fluorescent material swashs exciting light of the wavelength greater than 400nm
It gives and does not shine.
2. projection film according to claim 1, which is characterized in that the red light flourescent material wavelength be 200nm~
The feux rouges that wavelength is 550~700nm is issued under the excitation of the exciting light of 280nm, the green-emitting fluorescent material is 260nm in wavelength
The green light that wavelength is 500~550nm is issued under the excitation of the exciting light of~320nm, the blue-light fluorescent material is in wavelength
The blue light that wavelength is 380~570nm is issued under the excitation of the exciting light of 350nm~400nm.
3. projection film according to claim 1, which is characterized in that the fluorescence coating (2) further includes resin, the phosphor
Material is dispersed in the resin, and the resin is light-cured resin, heat reactive resin and/or thermoplastic resin.
4. projection film according to claim 3, which is characterized in that the resin is pressure sensitive adhesive, and the fluorescence coating (2) is also wrapped
Solvent is included, the preferably described solvent is N-Methyl pyrrolidone, in the further preferred fluorescence coating (2), the weight of the pressure sensitive adhesive
Measuring percentage is 5%~80%, and the weight percent of the N-Methyl pyrrolidone is 10%~90%, the fluorescent material
Weight percent is 1.0%~10%.
5. projection film according to claim 1, which is characterized in that the projection film further include:
Substrate (1), the fluorescence coating (2) are arranged on the surface of the substrate (1).
6. projection film according to claim 5, which is characterized in that there are two the substrates (1), is first base material respectively
(11) with the second substrate (12), fluorescence coating (2) setting is between the first base material (11) and second substrate (12).
7. projection film according to claim 5, which is characterized in that the light transmittance of the substrate (1) is greater than 80%.
8. projection film according to claim 5, which is characterized in that the mist degree of the substrate (1) is less than 3%.
9. projection film according to claim 5, which is characterized in that the light transmittance of the substrate (1) is greater than 90%, the base
The mist degree of material (1) is less than 1%.
10. a kind of optical projection system, including projection film, which is characterized in that the projection film is any one of claims 1 to 9 institute
The projection film stated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810864243.8A CN108957938A (en) | 2018-08-01 | 2018-08-01 | Projection film with include its optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810864243.8A CN108957938A (en) | 2018-08-01 | 2018-08-01 | Projection film with include its optical projection system |
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| CN108957938A true CN108957938A (en) | 2018-12-07 |
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