Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Calculation of the optical transfer function of a light valve system with dark field observation

: Kuhlow, B.; Sinnig, T.

Applied optics 26 (1987), No.13, pp.2659-66
ISSN: 0003-6935
ISSN: 1539-4522
ISSN: 1559-128X
Journal Article
Fraunhofer HHI ()
colour television; optical projectors; optical transfer function; extended light sources; red channel; green channel; blue channel; continuously tuned sinus modulation; light valve system; dark field observation; mtf curves; light efficiencies; continuous spectral density; color channels; tv color projector; carrier gratings; control layer; phase objects; transmitted light

In a single light valve system, MTF curves and light efficiencies are calculated, which are only caused by the dark field method. Extended light sources in a regular arrangement with continuous spectral density in each of the three color channels-red, green, and blue-of the TV color projector are taken into account. Continuously tuned sinus modulation of the carrier gratings written into the control layer, acting as phase objects for the transmitted light, is chosen for the calculations. The results obtained are in good agreement with measurements.