Projection apparatus with incorporated screen. (Machine-translation by Google Translate, not legally binding)

摘要

Projection apparatus with built-in screen, characterized by being composed of a series of projection elements mounted on a piece of furniture formed by a box, which locates and protects them, most of the front surface of said box being constituted by a diffusing screen and extending the furniture, under it, in a previous supplement, outstanding, existing between said furniture and the supplement a space with guides to place the objects to project, whether these rolls, sheets or plates, such as slides, sheets, microscopic preparations, micro -cards and the like, with this supplement taking the projection lantern with all the characteristic elements, as well as its means of electrical power, control and cooling, for which there is the appropriate window, completing the box the lens assembly with their devices of change of magnification and focus, as well as the set of mirrors in proper number and with the inclinations pre so that the final image is projected on the screen. (Machine-translation by Google Translate, not legally binding)