Control of the ellipsoidal reflectors shape for biomedical photometers
A mirror coating technology by chemical-galvanic metallization of inner surface of ellipsoidal reflector produced by 3-D printing of ABS plastic is presented in the paper. Two ways of this technology realization were considerated. The first is by applying a conductive layer with graphite powder. The second is by chemical deposition metal conductive layer and subsequent functional layering. The method of shape control of inner mirror surface of reflector based of anaberration points was developed and can be used to measure the deviation form of metal ellipsoids with polished inner surface as well as produced by proposed technology. The analytical basis for spatial orientation elements measuring tools and mathematical tools of determine standard deviation shape the surface at the point of control were developed. Comparative control of the metal ellipsoid and the metallized ellipsoid was spent in five planes at different heights characterizing the position of the control's point and the angle of the laser beam. In a given planes "digital" model working surface of an ellipsoid revolution with the actual shape and the coefficient of reflection have been received. The control results can be taken into account during correction of the mathematical tools propagation of optical radiation in biomedical photometer.