CN2337587Y

CN2337587Y - Soft film Alekan-Gerard transmissive viewing screen

Info

Publication number: CN2337587Y
Application number: CN 98228140
Authority: CN
Inventors: 陈祯培; 周琨; 陈怀新; 陈涛
Original assignee: Sichuan Union University
Current assignee: Sichuan Union University
Priority date: 1998-06-15
Filing date: 1998-06-15
Publication date: 1999-09-08
Anticipated expiration: 2008-06-15

Abstract

The utility model relates to a soft film layer bead transmission screen. The utility model is mainly composed of a transparent soft film basement and a beam scattering system; one surface of the soft film basement, which is processed with great roughness, is called a rough surface, and the other surface of the soft film basement, which is processed with small roughness, is called a grain surface; beams are attached on the rough surface of the soft film layer by optical glue which matches with the beams in refractivity, and the beams are half-naked and attached on the rough surface of the soft film layer. The utility model not only has high image brightness and achieves the purpose of eliminating halo and can prevent the absorption and reflection of external light, and besides, the utility model has the advantages of simple structure, simple manufacture technology, convenient operation, strong practicability, low cost, etc.

Description

Mantle bead transmissive viewing screen

The utility model relates to a kind of transmissive viewing screen, and the soft film of especially a kind of usefulness is made the bead transmissive viewing screen of substrate.

The effect of transmission screen is that screen is crossed in the transmission of imaging light, utilizes screen the scattering of light effect to be made it to image in the eyes by the observer are received on the screen.Mostly existing transmissive viewing screen is to constitute matrix by stiff board material, in stiff board material, sneak into and to produce the particulate system of scattering to light, its luminous energy is by Gaussian distribution, in imaging, will produce primary optical axis directivity vignetting, general for this reason stiff board material surface will add the Fresnel Lenses of the threaded shape impression of one deck, with elimination part gradual halation phenomena, this structural manufacturing process complexity, it is relatively poor especially to eliminate gradual halation phenomena for large format.Secondly be a kind of multilayer disperse system transmission screen such as the patent No. 95225385.2, its structure generally is the surface adhesion scattering particulate at transparent rigid substrate, though this screen technology is simple, so owing to still adopt hardboard structure optical energy loss bigger, image quality is not ideal enough, and practicality is relatively poor.

The purpose of this utility model is at the existing weak point of existing transmission screen, and a kind of soft film type substrate bead transmission screen is provided.This transmission screen not only can improve image evenness, and the little picture brightness height of optical energy loss, and the utility model price is low, easy to use simultaneously, and practicality is stronger.

The purpose of this utility model is to adopt following measure to realize:

The utility model adopts flex-film substrate and bead scattering system to constitute, and a kind of soft high transmission rate polymeric membrane is selected in its substrate for use, and the one side of rete is processed into bigger roughness, is referred to as hair side; Another side is processed into less roughness, is referred to as the light face, and thickness also can be selected according to operating position generally in 0.4 millimeter.Bead scattering system is actual to be made of the little footpath bead through screening, little footpath bead that bonding one deck is evenly distributed on the basement membrane layer hair side, and pearl directly is generally less than 0.05 millimeter, adopts refractive index and substrate, the transparent optical resin glue that bead is complementary during bonding bead.

Fig. 1 is the utility model structural profile synoptic diagram;

Fig. 2 is the utility model bead structure enlarged diagram.

Below in conjunction with accompanying drawing structure of the present utility model is further described.

Substrate of the present utility model is the mantle layer, the one side of substrate is a light face 1, another side is a hair side 2, on hair side, adhere to layer of particles bead 3, its pearl directly is 0.05 millimeter, bead 3 semi-nudities utilize the transparent optical resin glue 4 that is complementary with the bead refractive index that bead 3 is adhered on the substrate hair side 2 outside the hair side 2 of substrate.And the bead that is exposed to outside the glue-line partly forms miniature convex lens, and the formed miniature convex lens of this bead will also make scattered light all directions intensity approaching substantially when will utilize its optically focused to act on the raising picture brightness, thereby eliminate vignetting, uniform picture brightness.

It is as follows to the utlity model has advantage:

1, because the utility model adopts the transparent mantle of single hair side to do substrate, rete can use hair side The scattering process imaging, can utilize again the high characteristics of its light transmittance to improve picture brightness.

2, one deck bead of film surface adhesion of the present utility model plays the effect of miniature convex lens, Further make scattered light all directions even intensity, reach and eliminate the vignetting purpose, and prevent the suction of exterior light Receive and reflection.

3, the utility model structure and manufacture craft are simple, and cheap, and practicality is stronger.

Claims

1, a kind of mantle bead transmissive viewing screen is characterized in that it mainly adopts flex-film substrate and bead scattering system to constitute, and the one side of described mantle layer substrate is processed into less roughness, and this face is called as light face (1); Another side is processed into bigger roughness, this face is called as hair side (2), bead scattering system is made of the particulate bead (3) through screening, the optical cement that this layer bead is complementary with refractive index (4) adheres on the hair side (2) of mantle layer, and is half-naked simultaneously outside mantle layer substrate hair side (2).

2,, it is characterized in that described flex-film substrate is the soft high transmission rate polymeric membrane of layer of transparent according to the described mantle layer of claim 1 bead transmissive viewing screen.

3, according to the described transmissive viewing screen of claim 1, it is characterized in that covering with paint, lacquer, colour wash, etc. above the hair side of described substrate layer of particles bead (3), its pearl directly is 0.05 millimeter, and it is half-naked outside the plane (2) of substrate, utilize the transparent optical resin glue (4) that is complementary with the bead refractive index that bead (3) is adhered on the substrate hair side (2), and the bead that is exposed to outside the glue-line partly forms miniature convex lens, the formed miniature convex lens of this bead will also make scattered light all directions intensity approaching substantially when will utilize its optically focused to act on the raising picture brightness, thereby elimination vignetting, uniform picture brightness, face projected light beam during work, and the light face of substrate can be eliminated the influence that ambient light brings.

4,, it is characterized in that the refractive index of the refractive index of selected optical cement bonding agent and its end, little footpath bead is complementary according to the described transmissive viewing screen of claim 1.