CN109271070A - Capacitance touching control formula short focus projection screen and optical projection system - Google Patents
Capacitance touching control formula short focus projection screen and optical projection system Download PDFInfo
- Publication number
- CN109271070A CN109271070A CN201811364514.XA CN201811364514A CN109271070A CN 109271070 A CN109271070 A CN 109271070A CN 201811364514 A CN201811364514 A CN 201811364514A CN 109271070 A CN109271070 A CN 109271070A
- Authority
- CN
- China
- Prior art keywords
- touching control
- capacitance touching
- layer
- projection screen
- short focus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The present invention relates to short focus projection art, a kind of capacitance touching control formula short focus projection screen and optical projection system, including substrate, optical grains layer and light-absorption layer are provided；Reflecting layer is additionally provided on the optical grains layer；Capacitance touching control structure is equipped between substrate and optical grains layer；Capacitance touching control structure includes capacitance touching control film layer.The present invention also provides a kind of optical projection systems with capacitance touching control formula short focus projection screen, and the central processing unit including connecting projector, central processing unit is also connected with the ordinate detecting signal unit for detecting the capacitance touching control formula short focus projection screen touch position.Whereby, the present invention is by being arranged capacitance touching control structure between substrate and Fresnel Lenses layer；Projection screen is set to be provided simultaneously with excellent touch function and environment resistant light effect.Have also combined capacitance touch structure and the anti-light projection screen structure of Fresnel.Projection hard curtain structure based on this structure is, it can be achieved that the touch projection of high precision and fast response shows screen.
Description
Technical field
The present invention relates to short focus projection art more particularly to a kind of capacitance touching control formula short focus projection screen and projection systems
System.
Background technique
The anti-light projection screen of short focus can be divided into supporting part and hard curtain.Supporting part is rollable, based on black grid or line grating projection screen,
Texture structure is outwardly.Hard curtain is not foldable, and based on Fresnel projection screen (such as Fig. 1), inwardly, anti-light effect is more for texture structure
It is good.
Referring to fig. 2, in existing technology, there are a kind of touch screen projection display system, including projection hard curtain, infrared touch-control
61, projector 6 and control device 62.Wherein, projection hard curtain reflected image information；Infrared touch frame incudes touch action, production
Corresponding electric signal；Projection machine projects on image to projection hard curtain；Control device obtains the signal according to electrical signal of reaction
The corresponding touch-control coordinate in position is generated, carries out screen switching projecting machine according to touch-control coordinate control room.Using infrared touch-control
Mode, although production is simple, touch-control points are less, and touch-control sensing precision is lower, and effect is poor, meanwhile, infrared touch frame
It is limited to the size of infrared LED lamp, frame is again thick and wide, reduces visual effect.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of the present invention is to provide a kind of capacitance touching control formula short focus projection screens to pass through in substrate
Capacitance touching control structure is set between optical grains layer；Projection screen is set to be provided simultaneously with excellent touch function and environment resistant light efficiency
Fruit also has many advantages, such as high precision and fast response, thin thickness narrow frame.The present invention also provides one kind to have capacitance touching control formula short
The optical projection system of out-of-focus projection's curtain, combines capacitance touch structure and the anti-light projection screen structure of Fresnel.Throwing based on this structure
The hard curtain structure of shadow is, it can be achieved that the touch projection of high precision and fast response shows screen.
To achieve the goals above, the present invention provides a kind of capacitance touching control formula short focus projection screen, including substrate, optical grains
Layer and light-absorption layer；Reflecting layer is additionally provided on the optical grains layer；
Capacitance touching control structure is equipped between the substrate and optical grains layer；Capacitance touching control structure includes capacitance touching control film
Layer.
Capacitance touching control formula short focus projection screen according to the present invention, the optical grains layer are Fresnel Lenses layer.
Capacitance touching control formula short focus projection screen according to the present invention, the Fresnel Lenses layer replaces with linear light grid layer, described
Hyaline layer is equipped between linear light grid layer and capacitance touching control structure.
Capacitance touching control formula short focus projection screen according to the present invention, the linear light grid layer are black line grating layer, black linear light
Grid layer is structure as a whole with the light-absorption layer.
Capacitance touching control formula short focus projection screen according to the present invention, the capacitance touching control film are made of transparent conductive material.
Capacitance touching control formula short focus projection screen according to the present invention, the transparent conductive material are tin indium oxide or nano silver.
Capacitance touching control formula short focus projection screen according to the present invention covers a protective layer in the capacitance touching control film layer.
Capacitance touching control formula short focus projection screen according to the present invention, the material in the reflecting layer are aluminium or silver.
The present invention also provides a kind of optical projection systems with capacitance touching control formula short focus projection screen, including in connection projector
Central processor, the central processing unit are also connected with the ordinate for detecting the capacitance touching control formula short focus projection screen touch position
Detecting signal unit.
Optical projection system according to the present invention with capacitance touching control formula short focus projection screen, the central processing unit be CPU or
MPU。
The present invention provides a kind of capacitance touching control formula short focus projection screens by the way that electricity is arranged between substrate and optical grains layer
Hold touch-control structure；So that projection screen has been provided simultaneously with excellent touch function and environment resistant light effect, also there is high-precision, fast sound
It answers, the advantages that thin thickness narrow frame.The present invention also provides a kind of optical projection system with capacitance touching control formula short focus projection screen, knots
Capacitance touch structure and the anti-light projection screen structure of Fresnel are closed.Projection hard curtain structure based on this structure is, it can be achieved that high-precision
It spends, the touch projection of fast-response shows screen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the projection screen prior art；
Fig. 2 is the structural schematic diagram of the optical projection system prior art；
Fig. 3 is the structural schematic diagram of one embodiment of capacitance touching control formula short focus projection screen of the present invention；
Fig. 4 is the structural schematic diagram of one embodiment of capacitance touching control formula short focus projection screen of the present invention；
Fig. 5 is the structural block diagram of optical projection system of the invention；
1- substrate in the figure, 2- Fresnel Lenses layer, 3- light-absorption layer, the reflecting layer 4-, 5- linear light grid layer, 51- hyaline layer；
6- projector, the infrared touch frame of 61-, 62- control device；7- capacitance touching control structure, 8- capacitance touching control formula short focus projection screen, 81-
Horizontal, ordinate detecting signal unit；9- central processing unit.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 3, the present invention provides a kind of capacitance touching control formula short focus projection screens, including substrate 1, optical grains layer and suction
Photosphere 3；Reflecting layer 4 is additionally provided on the optical grains layer.Optical grains layer serves anti-light.The material of substrate can be softwood
Or hard material.
Capacitance touching control structure 7 is equipped between the substrate 1 and optical grains layer；Capacitance touching control structure 7 includes capacitance touching control
Film layer.
The optical grains layer is Fresnel Lenses layer 2；
Referring to fig. 4, the optical grains layer can also be linear light grid layer 5, i.e., substitute Fresnel Lenses using linear light grid layer 5
Layer 2.Since the surface of linear light grid layer 5 is in concaveconvex structure, planarizing process, therefore the linear light grid layer 5 and capacitive touch need to be carried out
It controls and is equipped with hyaline layer 51 between structure 7；Preferably, the linear light grid layer 5 is black line grating layer, has the work of light-absorption layer 3
With, therefore light-absorption layer 3 and black line grating layer can be as integral structures.
Capacitance touching control structure 7 includes two layers of transparent electrode, respectively emission electrode and receiving electrode, the material generally used
For tin indium oxide (ITO).Working principle: when user's hand or Pointer contacts capacitance touching control film layer, due to human body electric field, hand
Finger or stylus and touch-control film layer will form a coupled capacitor, due to being connected to high-frequency signal in capacitance touching control film layer, then
It just has in a certain amount of electric charge transfer to finger or stylus, and in order to restore the loss of these charges, charge will be from electricity
The four angles supplement for holding film layer is returned, and the quantity of electric charge of supplement and the distance at contact point to four angles are directly proportional, therefore can calculate
Position where contact point out.Compared to other touch technologies, capacitance touching control technology has precision high, and sensitivity is good, and stability is strong
The advantages that.
Projection screen manufacturing process of the invention is as follows, first makes capacitance touching control film layer structure, substrate material on substrate 1 now
Material can be the functions membrane materials such as PET, PC, PS or PMMA, and capacitance touching control film is transparent conductive material, for tin indium oxide or can receive
Rice silver etc..If the scheme of splicing can also be used in the production of capacitance touching control film layer because process is limited by board.
A protective layer can be covered in capacitance touching control film layer, can also directly utilize nano-imprint process or UV clamper
Skill makes optical grains layer.Protective layer is served as with optical grains layer.After having made after optical grains layer, printing, spray are recycled
The techniques such as painting, vapor deposition make one layer of metallic reflector 4 (such as metallic aluminium or silver).
Projection screen of the invention has capacitance touching control film layer and the anti-light texture structure of Fresnel, and capacitance touching control film layer is more
Close to projector.Due to the thin-film material that capacitance touching control film layer is high transparency, so the influence to projection ray is smaller, also just not
It will affect the anti-light effect of optical grains layer.Although the anti-light texture of Fresnel is covered with metallic reflection structure, but it is in capacitor
Behind touch-control film layer, the touch-control effect of finger or capacitance pen is not interfered with.Therefore, which has been provided simultaneously with excellent touch-control
Function and environment resistant light effect also have many advantages, such as high precision and fast response, thin thickness narrow frame.
Referring to Fig. 5, the present invention also provides a kind of optical projection systems with capacitance touching control formula short focus projection screen, including connection
The central processing unit 9 of projector 6, central processing unit 9 are also connected with for detecting 8 touch position of capacitance touching control formula short focus projection screen
Ordinate detecting signal unit 81.
Working principle: image is incident upon on capacitance touching control formula short focus projection screen 8 by projector 6.Projection screen is established after being powered
Lateral and vertical signal grid.After finger touching, the coordinate touching signals of finger position are destroyed, and pass through horizontal, ordinate
Detecting signal unit 81 may recognize that the position of finger in the picture.Horizontal later, ordinate detecting signal unit 81 is by the information
It is sent to central processing unit 9.Readjust display in the position that central processing unit 9 can be touched upon receiving this information according to finger
Picture, and new display picture is sent to projector 6, and projected on projection screen by it, complete the adjustment of picture.
Central processing unit 9 can be CPU or MPU.
Certainly, it is suitable for projection supporting part, i.e. line grating short focus curtain.
In conclusion the present invention provides a kind of capacitance touching control formula short focus projection screen by substrate and optical grains layer it
Between capacitance touching control structure is set；So that projection screen has been provided simultaneously with excellent touch function and environment resistant light effect, also has high-precision
The advantages that degree, fast-response, thin thickness narrow frame.The present invention also provides a kind of projections with capacitance touching control formula short focus projection screen
System combines capacitance touch structure and the anti-light projection screen structure of Fresnel.Projection hard curtain structure based on this structure, can be real
The touch projection of existing high precision and fast response shows screen.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of capacitance touching control formula short focus projection screen, which is characterized in that including substrate, optical grains layer and light-absorption layer；The light
It learns and is additionally provided with reflecting layer on lines layer；
Capacitance touching control structure is equipped between the substrate and optical grains layer；Capacitance touching control structure includes capacitance touching control film layer.
2. capacitance touching control formula short focus projection screen according to claim 1, which is characterized in that the optical grains layer is luxuriant and rich with fragrance alunite
That lens jacket.
3. capacitance touching control formula short focus projection screen according to claim 2, which is characterized in that the Fresnel Lenses layer replacement
For linear light grid layer, hyaline layer is equipped between the linear light grid layer and capacitance touching control structure.
4. capacitance touching control formula short focus projection screen according to claim 3, which is characterized in that the linear light grid layer is black line
Grating layer, black line grating layer are structure as a whole with the light-absorption layer.
5. capacitance touching control formula short focus projection screen according to claim 1, which is characterized in that the capacitance touching control film is using saturating
Bright conductive material is made.
6. capacitance touching control formula short focus projection screen according to claim 5, which is characterized in that the transparent conductive material is oxygen
Change indium tin or nano silver.
7. capacitance touching control formula short focus projection screen according to claim 5, which is characterized in that covered in the capacitance touching control film layer
A lid protective layer.
8. capacitance touching control formula short focus projection screen according to claim 1, which is characterized in that the material in the reflecting layer is aluminium
Or silver.
9. a kind of optical projection system with capacitance touching control formula short focus projection screen described in claim 1~8 any one, feature
It is, the central processing unit including connecting projector, the central processing unit is also connected with short for detecting the capacitance touching control formula
The ordinate detecting signal unit of out-of-focus projection's curtain touch position.
10. a kind of optical projection system with capacitance touching control formula short focus projection screen as claimed in claim 9, which is characterized in that described
Central processing unit is CPU or MPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364514.XA CN109271070A (en) | 2018-11-16 | 2018-11-16 | Capacitance touching control formula short focus projection screen and optical projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364514.XA CN109271070A (en) | 2018-11-16 | 2018-11-16 | Capacitance touching control formula short focus projection screen and optical projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109271070A true CN109271070A (en) | 2019-01-25 |
Family
ID=65190320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811364514.XA Withdrawn CN109271070A (en) | 2018-11-16 | 2018-11-16 | Capacitance touching control formula short focus projection screen and optical projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109271070A (en) |
-
2018
- 2018-11-16 CN CN201811364514.XA patent/CN109271070A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |
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| WW01 | Invention patent application withdrawn after publication |