SU1599835A1 - Method of producing apertured lens dot screens - Google Patents

Abstract

The invention relates to optical instrumentation, can be used, in particular, in the printing industry, cinematography, the production of lighting and projection devices and allows us to simplify the technology of manufacturing rasters and improve the quality of the diaphragm. The method consists in applying a solution of gelatin on a transparent substrate, applying lens elements made of an epoxy composition to the gelatin layer and hardening the lens elements. After that, the raster is immersed in aqueous solutions of dyes.

Description

The invention relates to optical instrument making and can be used in the printing industry, cinematography, the production of lighting and projection devices.

The aim of the invention is to simplify the fabrication of rasters and increase the quality of the diaphragm

Plates of glass, astralone, triacetate, and t, n can be used as a transparent base, which are processed according to the following scheme before applying a layer of colloid;

degreasing in solution composition,

g / l:

 10 NEO 15-20

NajPO A15-20

OP-7 3-5 at 50-60 0, degreasing duration 3-5 minutes;

flushing with hot water (50-60 С)

within 1-2 minutes;

rinsing dist

water o

 The colloid solution is prepared as follows.

30 g of dry gelatin are soaked for 30-40 minutes in 200 ml of distilled water, the swollen gelatin is dissolved in a water bath at 45-50 ° C, 10 ml of a solution of wetter CB-105-12 is poured in, which is prepared in advance, a solution of 21 ml wetting agent in 100 ml of water. The prepared solution is sufficient for processing 1-2 m of surface.

The colloidal solution at 45–50 ° C is applied to the previously prepared substrates by irrigation, followed by drying in a horizontal centrifuge for 2-3 minutes at a frequency of

cl

with

about

QO

00

SL

rotor rotation 6O-100 rpm. After the layer is frozen, the plates are dried in an oven with a fan without heating for 45 minutes.

The prepared plates are applied using a screen printed form. Lens elements with a transparent composition: based on epoxy resin ED-20

Different color, lens elements remain

transparent d

Claims (1)

Invention Formula A method of manufacturing diaphragm lenses consisting in applying a colloid onto a substrate of a transparent material, forming opaque on a colloidal coating and diethyleneamine. Seal the areas and form lens eleven plates in a drying cabinet for 0.5 hours to open the epoxy composition, and then apply a 2% aqueous solution of Congo Red dye to hold them for 1-2 minutes. 5, a solution of a bright green dye (solution concentration 2%) is applied with water, allowed to stand for 1-2 minutes and washed again with water. At the same time, both the first and the second solutions of dye-20 lei diffuse only into the colloid layer on the open areas not sealed with lens elements, as a result of which these places are painted in MesHTOB, characterized in that, in order to simplify the fabrication of rasters and to increase the quality of the diaphragm, a solution of gelatin is used as a colloid, the formation of lens elements is done by applying an epoxy composition lens to the colloid layer and curing them, and the formation of opaque parts the colloidal coating is carried out after curing the lens elements by immersion in aqueous solutions of dyes. Different color, lens elements remain transparent d Invention Formula A method of manufacturing diaphragm lenses consisting in applying a colloid onto a substrate of a transparent material, forming opaque on a colloidal coating areas and the formation of lens elements MesHTOB, characterized in that, in order to simplify the technology of making rasters and making the quality of diaphragm, a solution of gelatin is used as a colloid; The formation of the opaque parts of the colloidal coating is carried out after hardening the lens elements by immersion in aqueous solutions of dyes.