Reflectors and transflector

 

The reflector or transflector has a light-diffusing layer and, accordingly, light reflecting or svetoraspredelenie mirror layer. Light-diffusing layer contains a resin including dispersed therein fine particles, and formed directly on the specified mirror layer or through another transparent base. The average roughness "Rz" ten points on the surface of the specified light-diffusing layer is less than 2 microns; the ratio of the refractive index of these fine particles to the resin layer excluding these fine particles is from 1,001: 1 to 1.2:1. Light-diffusing layer has a thickness of 3-50 μm, the refractive index of the resin layer excluding these fine particles is from 1.3 to 1.55. The amount of the fine particles may be 5-50 weight. hours at 100 weight.h. a layer of resin, excluding these fine particles. Fine particles can have an average particle size average of 0.5 to 30 μm. Enhanced reflection without roughening the surface, as well as improving the quality of the image using the specified reflector or transflector. 4 C. and 16 h.p. f-crystals, 2 tab.

1. A reflector having a light-diffusing layer and the reflective mirror layer, a light-diffusing layer contains a resin including dispersed therein fine particles, characterized in that the light-diffusing layer formed directly on the specified reflective mirror layer or through another transparent base, the average roughness "Rz" ten points on the surface of the specified light-diffusing layer is less than 2 microns; the ratio of the refractive index of these fine particles to the resin layer excluding these fine particles is from 1,001:1 to 1.2:1 and the light-diffusing layer has a thickness of 3-50 μm.

2. The reflector under item 1, characterized in that the refractive index of the resin layer excluding these fine particles is from 1.3 to 1.55.

3. The reflector under item 1 or 2, characterized in that the amount of these fine particles is 5-50 weight.h. 100 weight.h. a layer of resin, excluding these fine particles.

4. The reflector according to any one of paragraphs.1-3, characterized in that the said fine particles have an average particle size average of 0.5 to 30 μm.

5. The reflector according to any one speaker according to any one of paragraphs.1-5, characterized in that the reflective mirror layer is a film on the surface of the deposited metal.

7. The reflector on p. 6, characterized in that the surface of the deposited metal surface is performed by deposition of silver or aluminum.

8. The reflector according to any one of paragraphs.1-7, characterized in that the light-diffusing layer adjacent to the surface of the deposited metal.

9. Optical film having a reflector according to any one of paragraphs.1-8.

10. The device display images having a reflector according to any one of paragraphs.1-8.

11. Transflector having a light-diffusing layer and svetoraspredelenie mirror layer, a light-diffusing layer contains a resin including dispersed therein fine particles, characterized in that the light-diffusing layer formed directly on the specified citotransfusion mirror layer or through another transparent base, the average roughness "Rz" ten points on the surface of the specified light-diffusing layer is less than 2 microns; the ratio of the refractive index of these fine particles to the resin layer, excluding specified tonkodispersnoe the PRS on p. 11, characterized in that the refractive index of the resin layer excluding these fine particles is from 1.3 to 1.55.

13. Transflector under item 11 or 12, characterized in that the amount of these fine particles is 5-50 weight.h. 100 weight.h. a layer of resin, excluding these fine particles.

14. Transflector according to any one of paragraphs.11-13, characterized in that the said fine particles have an average particle size average of 0.5 to 30 μm.

15. Transflector according to any one of paragraphs.11-14, characterized in that the said fine particles have a true spherical shape.

16. Transflector according to any one of paragraphs.11-15, characterized in that the specified svetoraspredelenie mirror layer is a film on the surface of the deposited metal.

17. Transflector under item 16, characterized in that the surface of the deposited metal surface is performed by deposition of silver or aluminum.

18. Transflector according to any one of paragraphs.11-17, characterized in that the light-diffusing layer adjacent to the surface of the deposited metal.

19. Transflector according to any one of paragraphs.11-18, characterized in that the specified transflector is provided on the above transflector is provided for use in a display device of the image.

 

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FIELD: optical engineering.

SUBSTANCE: method is based upon exposure of parts of light-sensitive medium by speckle pattern and subsequent processing of the medium. Exposed parts of light-sensitive medium have central and surrounding peripheral areas; the parts overlap each other with their peripheral areas. Exposure in central area is equal to preset value and exposure in peripheral area decreases linearly from preset value at its boundary with central area till zero at the boundary of exposed part. Shape, sizes and mutual disposition of exposed parts are chosen to provide constant exposition on whole surface of light-sensitive medium is constant and equals to preset value after process of exposure is finished. Indicatrix of diffusion is provided to be constant along the whole surface of speckle-diffuser at big sizes of speckle-diffuser.

EFFECT: improved efficiency.

3 cl, 6 dwg

FIELD: radiation shielding and masking systems, those producing illumination effects (advertisement, decorative lights), data display systems.

SUBSTANCE: proposed device that can be used for dissipating electromagnetic radiation, such as light, radio waves, X-rays, as well as for dissipating particle streams is, essentially, multilayer screen some of whose layers are deformable ones. Electric field is built up between two electricity conducting layers due to voltage applied to these layers. In the process conducting layers are split into segments and separate electrodes are brought to respective layers. Voltage applied to separate segments permanently varies with the result that electric field produced is nonuniform and deformable layers are embossed due to nonuniformity of attractive forces between electrodes, this embossed pattern permanently changing its configuration. Radiation (light of different ranges, radio and electromagnetic waves, particle streams) passed through screen or reflected therefrom dissipate due to optical nonuniformity. Kind of dissipation continuously varies due to changes in embossed pattern. Segments of conducting layers can be energized obeying different laws including pseudorandom one.

EFFECT: reduced specific surface power of incident radiation.

4 cl, 2 dwg

FIELD: optics.

SUBSTANCE: micro-lens array includes micro-lens array of Fresnel lenses, provided with grooves, divided on reflecting and deflecting parts. Reflecting surface is engineering so that angle of light fall onto it exceeds angle of full inner reflection, and limit angle is computed from formula , and functional dependence between input and output beams and micro-lens parameters is described by formula , where α - input angle; β - output angle; γ - angle of inclination of reflecting surface; δ - maximal falling angle of light; ε - angle of inclination of deflecting surface; n1 - air deflection coefficient; n2 - lens material deflection coefficient. Output beam is formed in such a way, that central groove forms wide-angle zone, and next grooves from center to edge form a zone from edge to center.

EFFECT: increased beam divergence angle after micro-structured optics up to 170-180° (depending on source used) with efficiency of 80-90% and with fully controlled shape of output beam.

14 dwg

FIELD: physics.

SUBSTANCE: optical substrate contains three-dimensional surface preset by the first function of surface pattern, modulated second function of surface pattern. The first function of surface pattern can be described by length, width and vertex angle with optical characteristics for formation of, at least, one output mirror component. The second function of surface pattern can be described by geometry with, at least, pseudorandom characteristic for modulation of the first function of surface pattern, at least, by phase along length of the first function of surface pattern. At that the phase presents horizontal position of peak along width. The surface of optical substrate creates mirror and scattered light from input light beam. The three-dimensional surface can have value of correlation function which is less than approximately 37 percent of initial throughout the length of correlation about 1 cm or less.

EFFECT: brightness increase is provided.

46 cl, 41 dwg

FIELD: physics.

SUBSTANCE: relief microstructure of the surface has protrusions and depressions, where in the first cross direction of an area of the surface there is an average of at least one transition from a protrusion to a depression or vice versa in every 20 mcm, and in the second cross direction of a pattern which is perpendicular to the first direction, there is an average of at least one transition from a first zone to a second zone or vice versa in every 200 mcm. The microstructure is characterised by that in the first direction the lateral arrangement of transitions is non-periodic and that protrusions mainly lie in the same top relief plateau and the depressions mainly lie in the same bottom relief plateau. Due to scattering effects, the surface relief microstructures are suitable for displaying images with a sharp transition between negative and positive images.

EFFECT: well distinguished and saturated image colours and absence of rainbow colours.

18 cl, 39 dwg

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