CN103246002A - Polaroid with optical thin-films - Google Patents

Abstract

The invention relates to a polaroid with optical thin-films. A boron-doped nano ceramic thin-film formed through chemical vapor deposition, a nano composite metal film formed through arc ion plating deposition and a nano composite oxide film formed through magnetron sputtered deposition are sequentially formed on a polaroid substrate. The polaroid with the optical thin-films has excellent light transmittance, high optical efficiency and uniformity in imaging, and ensures that the definitions of images in all positions are kept the same, so that a composite three-dimensional image is free from double images and high in contrast gradient, and accordingly, fatigue of eyes is remarkably relieved; and the surface of the polaroid not only has excellent heat resistance but also has favorable wearing resistance.

Description

Polaroid with optical thin film

Technical field

The present invention relates to optical field, the present invention relates to the optical thin film on a kind of polaroid in particular.

Background technology

The principle of existing polarization three-dimensional imaging is shown in accompanying drawing 1-2, from projector, image output devices such as projector output left-right frames different images sequence, behind the circular polarizing disk of the left and right sides, the left-right frames of composition diagram picture is decomposed and comes, a left side frame or right two field picture pass through the light polarization modulator modulating-coding again, and be encoded into a kind of in following several stereo format: (1) left two field picture becomes left-hand polarization light, and right two field picture becomes right-handed polarized light; (2) left two field picture becomes right-handed polarized light, and right two field picture becomes left-hand polarization light; Spectators just can make left eye see left-eye image by wearing with it corresponding polarization anaglyph spectacles, and right eye is seen eye image, thus in brain synthetic stereo image.Yet the polaroid that uses in the polarization three-dimensional imaging of the prior art is to use plastic material to make, and through forming polaroid with copper-bath dyeing, its defective is: low, the easy dust stratification of optical efficiency, easy scuffing, many, the complex process of feed consumption; Thereby there is following shortcoming in the effect that directly causes existing polarization three-dimensional imaging: a. imaging efficient is low, because the characteristic of plastic material has caused overall optical efficiency lower; B. imaging is all uneven, and the image that right and left eyes is seen is inconsistent in different position sharpness; C. imaging has ghost image, and the right and left eyes picture contrast is poor, degree of crosstalking height; D. the polaroid life-span is low, because the close together between polaroid and the projector causes the light source heat on the projector to be polarized the sheet material absorption, causes polaroid at high temperature to work for a long time, can not be high temperature resistant and make polarizer material itself, thus cause the life-span lower.

Summary of the invention

In order to solve the above-mentioned technical matters that exists in the prior art, the object of the present invention is to provide a kind of polaroid with optical thin film.

A kind of polaroid with optical thin film wherein is formed with nano ceramic film, nano composite film and nano composite oxide film successively on described polaroid matrix.

Wherein, described polaroid matrix is optical glass or optical resin.

Wherein, described nano ceramic film is boron doped nanometer ZnS_1-XO_XFilm, the doping of boron are 3-5at%, X=0.15-0.3.

Wherein, the described nano composite film composite metal membrane that is Nano Silver and copper.

Wherein, described nano composite oxide film is nano-ZnO, TiO₂Complex oxide film with BaO.

Wherein, described boron doped nanometer ZnS_1-XO_XFilm prepares by chemical gaseous phase depositing process.

Wherein, the composite metal membrane of described Nano Silver and copper prepares by the arc ions electroplating method.

Wherein, described nano composite oxide film obtains by magnetically controlled sputter method.

Wherein, described boron doped nanometer ZnS_1-XO_XThe thickness of film is 25-50nm.

Wherein, the thickness of the composite metal membrane of described Nano Silver and copper is 10-20nm, and wherein the mass ratio of silver and copper is 2: 1-3: 1.

Wherein, the thickness of described nano composite oxide film is 50-100nm, and the content of ZnO is 42-50wt%, TiO in the described nano-oxide₂Content be the BaO of 20-25wt% and surplus.

Compared with prior art, the present invention has following beneficial effect:

Polaroid transmittance with optical thin film of the present invention is good, optical efficiency is high, and the transmissivity of polarized light is higher than 90% in the spectral range of 450-550nm, and the transmissivity of polarized light is higher than 93% in the spectral range of 550-700nm.In addition, polaroid imaging of the present invention is even, and image sharpness throughout all is consistent (turbidity is lower than 2%), makes synthetic stereo-picture not have ghost image, the contrast height, and degree of crosstalking is little, can significantly alleviate the sense of fatigue of eyes; In addition, polaroid of the present invention surface not only good heat resistance, also have good wearing quality, significantly improved the life-span of polaroid.

Description of drawings

The principle schematic of first kind of polarization three-dimensional imaging in Fig. 1 prior art;

The principle schematic of second kind of polarization three-dimensional imaging in Fig. 2 prior art;

The transmittance graph of the polarized light of Fig. 3 polaroid of the present invention under different wave length.

Embodiment

Polaroid with optical thin film of the present invention wherein is formed with boron doped nanometer ZnS successively on described optical glass or optical resin polaroid matrix_1-XO_XThe composite metal membrane of film, Nano Silver and copper and by nano-ZnO, TiO₂Nano composite oxide film with BaO formation.Wherein, described boron doped nanometer ZnS_1-XO_XFilm prepares by chemical gaseous phase depositing process, and thickness is 25-50nm; The composite metal membrane of described Nano Silver and copper prepares by the arc ions electroplating method, and thickness is 10-20nm, and wherein the mass ratio of silver and copper is 2: 1-3: 1; Described nano composite oxide film obtains by magnetically controlled sputter method, and thickness is 50-100nm.As shown in Figure 3, the polaroid with optical thin film of the present invention, the transmissivity of polarized light is higher than 90% in the spectral range of 450-550nm, and the transmissivity of polarized light is higher than 93% in the spectral range of 550-700nm.In addition, polaroid imaging of the present invention is even, and image sharpness throughout all is consistent, and makes synthetic stereo-picture not have ghost image, the contrast height, and degree of crosstalking is little, can significantly alleviate the sense of fatigue of eyes; In addition, polaroid of the present invention surface not only good heat resistance, also have good wearing quality, significantly improved the life-span of polaroid.

Polaroid with optical thin film of the present invention can prepare specifically by the following method:

Step 100: plating pre-treatment

The polaroid of optical glass matrix or resinous substrates is provided; Then it is carried out pre-treatment, pre-treatment comprises degreasing, pickling, and steps such as cleaning make the cleaning surfaces of this metal base;

Step 110: chemical vapor deposition nano ceramic film

The described nano ceramic film of deposition in the anti-device of chemical vapor deposition utilizes gas supply pipe road supply gas and controls the flow of each gas by flowmeter.Reaction system is ZnCl₂-H₂S-BCl₃-H₂O-O₂-H₂, temperature of reaction is 380-420 ℃, working pressure is 1000-1500Pa, wherein ZnCl₂Flow be 50ml/min, H₂The flow of S is 15-35ml/min, BCl₃Flow be 20-25ml/min, H₂The flow of O is 5-20ml/min, O₂Flow be 5-10ml/min, H₂Flow be 500ml/min, sedimentation time is 3-10min, wherein the doping of boron is 3-5at%, X=0.15-0.3, film thickness are 25-50nm.

Step 120: electric arc ion-plating deposition nano composite film

The deposition parameter of arc ion plating is: target is the composite target material of argent and copper, operating air pressure: 0.1-0.2Pa, flame current: 10-20A, Dc bias: 50-100V, pulsed bias: 120-200V, the pulsed bias dutycycle is 35-50%, temperature is 300-350 ℃, sedimentation time is 0.5-5min, and film thickness is 10-20nm.

Step 130: magnetron sputtering deposition nano composite oxide film

Magnetron sputtering technique: target is ZnO, the TiO of purity 99.99wt%₂With the BaO ceramic sputter targets, the vacuum tightness that is evacuated to the sputter vacuum chamber is lower than 5 * 10^-4Pa, feed argon gas, the flow of Ar is 20-50sccm and makes that ar pressure is 0.5-2Pa, the sputtering power of each sputtering target is between 30-100W, and depositing temperature is 50-120 ℃, and sedimentation time is 2-10min, thickness is 50-100nm, makes that by the sputtering power of controlling each sputtering target the content of ZnO is 42-50wt%, TiO in the described nano composite oxides film₂Content be the BaO of 20-25wt% and surplus.

Though the embodiment part elaborates technical scheme of the present invention by embodiment, but those of ordinary skill is to be understood that and can not breaking away from the scope disclosed by the invention, can adopt to be equal to and replace or the equivalent transformation form is implemented technical scheme of the present invention.The embodiment of short of disengaging invention essence all is interpreted as having dropped within protection scope of the present invention.

Claims (9)

1. the polaroid with optical thin film is characterized in that being formed with successively nano ceramic film, nano composite film and nano composite oxide film on described polaroid matrix.

2. polaroid according to claim 1 is characterized in that described polaroid matrix is optical glass or optical resin.

3. polaroid according to claim 1 and 2 is characterized in that described nano ceramic film is boron doped nanometer ZnS_1-XO_XFilm, the doping of boron are 3-5at%, X=0.15-0.3.

4. according to each described polaroid of claim 1-3, it is characterized in that described nano composite film is the composite metal membrane of Nano Silver and copper.

5. according to each described polaroid of claim 1-4, it is characterized in that described nano composite oxide film is nano-ZnO, TiO₂Complex oxide film with BaO.

6. polaroid according to claim 5 is characterized in that described boron doped nanometer ZnS_1-XO_XFilm prepares by chemical gaseous phase depositing process.

7. polaroid according to claim 6 is characterized in that the composite metal membrane of described Nano Silver and copper prepares by the arc ions electroplating method.

8. polaroid according to claim 7 is characterized in that described nano composite oxide film obtains by magnetically controlled sputter method.

9. polaroid according to claim 8 is characterized in that described boron doped nanometer ZnS_1-XO_XThe thickness of film is 25-50nm; The thickness of the composite metal membrane of described Nano Silver and copper is 10-20nm, and wherein the mass ratio of silver and copper is 2: 1-3: 1; The thickness of described nano composite oxide film is 50-100nm, and the content of ZnO is 42-50wt%, TiO in the described nano-oxide₂Content be the BaO of 20-25wt% and surplus.

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