CN208488644U

CN208488644U - Ultrashort out-of-focus projection's light film

Info

Publication number: CN208488644U
Application number: CN201821127704.5U
Authority: CN
Inventors: 李州; 曽俊洋; 陈欣欣; 郭滨刚
Original assignee: Shenzhen Guangke Holographic Technology Co Ltd
Current assignee: Shenzhen Guangke Holographic Technology Co Ltd
Priority date: 2018-07-17
Filing date: 2018-07-17
Publication date: 2019-02-12
Anticipated expiration: 2028-07-17

Abstract

Originally practical that a kind of ultrashort out-of-focus projection's light film is provided, including substrate, multiple grating fringes being arranged in juxtaposition are provided on one side surface of substrate, the side of grating fringe face light source is echo area, another side is black light-absorbing area, the grid line width of the grating fringe is all the same, wide-angle leaded light may be implemented using the structure, and in terms of imaging, it is high that black and white saturation degree is formed on imaging film using light derived from light guide structure, the high image of color rendition degree, and the structure can absorb external environment light.

Description

Ultrashort out-of-focus projection's light film

Technical field

Originally practical to be related to light technical field of membrane more particularly to a kind of ultrashort out-of-focus projection's light film.

Background technique

In optical imaging field, projection screen currently on the market is suitable for projecting at a distance mostly, i.e., projector is necessary It is placed in apart from the farther away place of projection screen, the requirement to projector distance makes projection screen not be suitable for the limited field in space It closes, therefore, the projection screen of ultrashort coke just comes into being, but current ultrashort out-of-focus projection's curtain cannot achieve leading for wide-angle Light is also easy to the interference by the external environments light such as daylight, light, more dark occasion is suitable only for, so that ultrashort coke The application of projection screen is limited, and due to being easy the interference by external environment, so that its color saturation and black and white pair It is more lower than degree, influence the visual effect of spectators.

Summary of the invention

In order to solve the above technical problems, originally practical provide a kind of ultrashort out-of-focus projection's optical film, concrete scheme is as follows:

Including substrate, multiple grating fringes being arranged in juxtaposition, grating fringe face light source are provided on one side surface of substrate Side be echo area, another side is black light-absorbing area, the grating fringe grid line width is all the same.

It further, is equidistant between adjacent grating fringe.

Further, adjacent grating fringe distance values are between 0-10um.

Further, the material in the black light-absorbing area is a kind of material of absorptance 90% or more.

Further, the material of the echo area is a kind of material of reflectivity 90% or more.

Further, the grating fringe is triangular grating striped or camber line grating fringe.

Further, the material of substrate is one of PU, PP, PMMA, PET, PC, vinyl-based or a variety of.

This practical beneficial effect is: wide-angle leaded light may be implemented using the structure, and in terms of imaging, using leaded light It is absorbable outer that light derived from structure forms black and white saturation degree height, the high image of color rendition degree, and the structure on imaging film Environment light.

Detailed description of the invention

Fig. 1 is the structural side view of this practical first embodiment；

Fig. 2 is this practical first embodiment kind structural front view；

Fig. 3 is this practical second embodiment kind structural side view.

Specific embodiment

Embodiment one:

See Fig. 1 to Fig. 2, a kind of ultrashort out-of-focus projection's optical film, including substrate 1, be provided on 1 one side surface of substrate it is multiple simultaneously The grating fringe 2 of arrangement is arranged, the side of 2 face light source of grating fringe is echo area 21, another side is black light-absorbing area 22, institute There is the grid line width d of grating fringe 2 all the same, is between adjacent grating fringe 2 equidistantly, distance values are between 0-10um.

Embodiment two:

See Fig. 3, for embodiment two compared with embodiment one, difference is that the grating fringe 2 in embodiment one is triangle, Grating fringe 2 in embodiment two is Arc stripe, and the side of the face light source of camber line grating fringe is echo area, another side For black light-absorbing area.

Preferentially, in both the above examples of implementation, the material in black light-absorbing area is a kind of material of absorptance 90% or more Material, the material of echo area are a kind of material of reflectivity 90% or more.

The structure working principle of the utility model: being shown in Fig. 1 and Fig. 3, when projector 3 projects light to screen, by reflection Spectators 4 are projected to by reflection behind area 21, the two of the utility model kind implement to realize that wide-angle is led as seen from the figure Light, and light largely projects spectators 4, high gain, and the structure and can absorb external environment light.

In both the above examples of implementation, the material of substrate is one of PU, PP, PMMA, PET, PC, vinyl-based or more Kind.

The above is only this practical preferred embodiment, be not limited to it is practical, for those skilled in the art It is originally practical to have various modifications and variations for member.Within all spirit and principle practical in sheet, made any modification, Equivalent replacement, improvement etc. should be included within this practical protection scope.

Claims

1. a kind of ultrashort out-of-focus projection's optical film, including substrate, multiple gratings strips being arranged in juxtaposition are provided on one side surface of substrate Line, it is characterised in that: the side of grating fringe face light source is echo area, and another side is black light-absorbing area, the gratings strips The grid line width of line is all the same.

2. projection optical film according to claim 1, it is characterised in that: be equidistant between adjacent grating fringe.

3. projection optical film according to claim 2, it is characterised in that: adjacent grating fringe distance values 0-10um it Between.

4. projection optical film according to claim 1, it is characterised in that: the material in the black light-absorbing area is a kind of extinction Material of the rate 90% or more.

5. projection optical film according to claim 1, it is characterised in that: the material of the echo area is that a kind of reflectivity exists 90% or more material.

6. projection optical film described in -5 any one according to claim 1, it is characterised in that: the grating fringe is triangle Grating fringe.

7. projection optical film described in -5 any one according to claim 1, it is characterised in that: the grating fringe is camber line light Grizzly bar line.

8. projection optical film described in -5 any one according to claim 1, it is characterised in that: the material of substrate be PU, PP, One of PMMA, PET, PC, vinyl-based or a variety of.