Device for varying the luminous temperature of the lamps used for color films without losing the color temperature (Machine-translation by Google Translate, not legally binding)

摘要

Device for variing the luminaires intensity of lamps, characterized in that it consists essentially of having in the anterior part of the light source, a set of double blind, whose slats of light thickness and little width have been placed in vertical position, so that they are capable of rotating 90º around an axis, also vertical, which passes through each slat centrally, with the rear blind slightly inserted in the field of the previous one, so that when folding, the slats of both blinds are arranged in an imbricated manner, on the back of the housing, which protects the focus and set of blinds, a slot that serves as a guide to the command for opening and closing the blinds to adjust the luminous intensity of the lamp, said control acting through a spiral spring, on a set of levers that drives the upper and lower bars, unifying the shafts of the adjustable slats, real raising the opening and closing of the light projection field of the focus to the desired size. (Machine-translation by Google Translate, not legally binding)