CN204374597U - A kind of optically focused projection cloth - Google Patents
A kind of optically focused projection cloth Download PDFInfo
- Publication number
- CN204374597U CN204374597U CN201420798731.0U CN201420798731U CN204374597U CN 204374597 U CN204374597 U CN 204374597U CN 201420798731 U CN201420798731 U CN 201420798731U CN 204374597 U CN204374597 U CN 204374597U
- Authority
- CN
- China
- Prior art keywords
- curtain
- projection cloth
- face
- optically focused
- circular arc
- 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.)
- Expired - Fee Related
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- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The utility model discloses a kind of optically focused projection cloth, described projection cloth is made up of curtain base and the curtain face be coated on act base, wherein curtain base be from bottom to top equipped with at the bottom of one deck black curtain successively, one deck woven fabric or glass-fiber-fabric curtain base, described curtain face is white curtain face, and the cross-sectional profiles of curtain face upper surface is the circular arc caved inward.By arranging the circular arc caved inward on the surface of projection cloth, make projection cloth have spotlight effect, thus inhibit divergence expression scattering, improve gain brightness and the drop shadow effect of projection screen.By optimizing the structure at the bottom of curtain, or the cohesive strength between strengthening at the bottom of curtain face and curtain.
Description
Technical field
The utility model relates to a kind of projection cloth, is specifically related to a kind of optically focused projection cloth.
Background technology
Shadow casting technique's widespread use.Its projection cloth adopted comprises ash and moulds curtain, moulds curtain, beaded glass curtain, metal curtain etc. in vain.Wherein ash is moulded curtain, moulded curtain is in vain with low cost, comparatively conventional.But the projection cloth manufactured at present particularly ash is moulded curtain, is moulded an act poor definition in vain.
But the projection screen produced at present is plane curtain, from the illumination of projection arrangement on projection screen, easily produce divergence expression scattering and do not enter in the eye of beholder, cause the gain brightness of projection screen little, viewing effect is not good.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provide a kind of can optically focused, improve the projection cloth of gain brightness.
For achieving the above object, the technical solution of the utility model is a kind of optically focused projection cloth of design, described projection cloth is made up of curtain base and the curtain face be coated on act base, wherein curtain base be from bottom to top equipped with at the bottom of one deck black curtain successively, one deck woven fabric or glass-fiber-fabric curtain base, described curtain face is white curtain face, and the cross-sectional profiles of curtain face upper surface is the circular arc caved inward.
For reaching best projection effect and suppressing projection cloth distortion, preferably, the central angle of the circular arc in described curtain face is 3 ~ 8 °.
For improving gain brightness further, preferably, described curtain face is also adhesive with glass dust.
For improving gain brightness further, or preferably, described curtain face is also adhesive with metal powder.
For improving gain brightness further, or preferably, described curtain face is also adhesive with glass dust or metal powder.
For increasing at the bottom of curtain and the cohesive strength in curtain face, preferably, at the bottom of described curtain, the cross-sectional profiles of upper surface is inside circular arc.
Still more preferably, the central angle of the circular arc of upper surface at the bottom of described curtain is greater than the central angle of the circular arc of described curtain face upper surface.
Advantage of the present utility model and beneficial effect are: by arranging the circular arc caved inward on the surface of projection cloth, make projection cloth have spotlight effect, thus inhibit divergence expression scattering, improve gain brightness and the drop shadow effect of projection screen.By optimizing the structure at the bottom of curtain, or the cohesive strength between strengthening at the bottom of curtain face and curtain.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of optically focused projection cloth in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of optically focused projection cloth in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of optically focused projection cloth in embodiment 3.
In figure: 1, at the bottom of curtain; 2, curtain base; 3, curtain face; 4, glass dust.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
Embodiment 1
As shown in Figure 1, the utility model is a kind of optically focused projection cloth.
This projection cloth is made up of curtain base and the curtain face 3 be coated on act base, wherein curtain base to be from bottom to top equipped with at the bottom of one deck black curtain 1 successively, one deck woven fabric or glass-fiber-fabric curtain base 2, curtain face 3 is white curtain face 3, and the cross-sectional profiles of curtain face 3 upper surface is the circular arc caved inward.
The central angle preferably selecting the circular arc in curtain face 3 is 3 ~ 8 °, to take into account drop shadow effect and to suppress projection cloth distortion.Otherwise central angle is excessive, then projection cloth is difficult to processing and yielding, and central angle is too small, then drop shadow effect improves little.
By arranging the circular arc caved inward in the curtain face 3 of projection cloth, make projection cloth have spotlight effect, thus inhibit divergence expression scattering, improve gain brightness and the drop shadow effect of projection screen.
Embodiment 2
On the basis of embodiment 1, as improvement, in the present embodiment, as shown in Figure 2, curtain face 3 is also adhesive with glass dust 4 to improve gain brightness further.
In addition glass dust can also replace by the potpourri of metal powder or glass dust and metal powder.
Embodiment 3
On the basis of embodiment 2, as improvement, in the present embodiment, as shown in Figure 3, at the bottom of curtain, the cross-sectional profiles of 1 is inside circular arc, has larger gluing area time gluing with curtain face at the bottom of such curtain.The central angle of the circular arc of central angle curtain face 3 upper surface of the circular arc of 1 upper surface at the bottom of best curtain.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. an optically focused projection cloth, it is characterized in that, described projection cloth is made up of curtain base and the curtain face be coated on act base, wherein curtain base be from bottom to top equipped with at the bottom of one deck black curtain successively, one deck woven fabric or glass-fiber-fabric curtain base, described curtain face is white curtain face, and the cross-sectional profiles of curtain face upper surface is the circular arc caved inward.
2. optically focused projection cloth as claimed in claim 1, it is characterized in that, the central angle of the circular arc in described curtain face is 3 ~ 8 °.
3. optically focused projection cloth as claimed in claim 1 or 2, is characterized in that, described curtain face is also adhesive with glass dust.
4. optically focused projection cloth as claimed in claim 1 or 2, is characterized in that, described curtain face is also adhesive with metal powder.
5. the optically focused projection cloth as described in claim 1 or 2 any one, is characterized in that, described curtain face is also adhesive with glass dust or metal powder.
6. optically focused projection cloth as claimed in claim 1, it is characterized in that, at the bottom of described curtain, the cross-sectional profiles of upper surface is inside circular arc.
7. optically focused projection cloth as claimed in claim 6, it is characterized in that, the central angle of the circular arc of upper surface at the bottom of described curtain is greater than the central angle of the circular arc of described curtain face upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798731.0U CN204374597U (en) | 2014-12-17 | 2014-12-17 | A kind of optically focused projection cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798731.0U CN204374597U (en) | 2014-12-17 | 2014-12-17 | A kind of optically focused projection cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204374597U true CN204374597U (en) | 2015-06-03 |
Family
ID=53330802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420798731.0U Expired - Fee Related CN204374597U (en) | 2014-12-17 | 2014-12-17 | A kind of optically focused projection cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204374597U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527790A (en) * | 2016-03-15 | 2016-04-27 | 江苏威赛尼显示技术有限公司 | Orthographic projection screen and production method of screen body thereof |
| CN109683441A (en) * | 2018-11-22 | 2019-04-26 | 无锡冬慧影视器材有限公司 | A kind of soft screen of metal and preparation method thereof |
-
2014
- 2014-12-17 CN CN201420798731.0U patent/CN204374597U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527790A (en) * | 2016-03-15 | 2016-04-27 | 江苏威赛尼显示技术有限公司 | Orthographic projection screen and production method of screen body thereof |
| CN105527790B (en) * | 2016-03-15 | 2017-09-05 | 江苏威赛尼显示技术有限公司 | The preparation method of front projection screen proscenia and its screen body |
| CN109683441A (en) * | 2018-11-22 | 2019-04-26 | 无锡冬慧影视器材有限公司 | A kind of soft screen of metal and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20151217 |
|
| EXPY | Termination of patent right or utility model |