Light collecting apparatus for photosensitive device

Claim 1

LIGHT SENSITIVE MEANS COMPRISING A PHOTOCELL SENSITIVE TO LIGHT IMPINGING RADIALLY THEREAGAINST, A GENERALLY CYLINDRICAL CASING FOR SAID CELL, AND FRAME MEANS COMPRISING A RADIAL EXTENSION OF SAID CYLINDRICAL CASING, SAID FRAME MEANS HAVING OPPOSED RELATIVELY FLAT FRONT AND REAR WALLS DEFINING A LIGHT RECEIVING AREA OF SUBSTANTIAL HEIGHT AND WIDTH, SAID FRONT WALL COMPRISING AN OPEN FRAME AND SAID FRONT AND REAR WALLS BEING DISPOSED AT AN ACUTE ANGLE HAVING ITS VERTEX AT THE OUTER END OF SAID EXTENSION, A FLAT PLATE OF DIFFUSING GLASS IN SAID OPEN FRAME FRONT WALL AND A FLAT PLATE OF DIFFUSING GLASS AGAINST SAID REAR WALL, AND OPAQUE MEANS AT THE REAR SIDE OF SAID SECOND FLAT PLATE FOR LIGHT REFLECTANCE, WHEREBY LIGHT IMPINGING EXTERNALLY ON SAID FRONT PLATE IS DIFFUSED THEREIN AND TRANSMITTED TO THE SPACE BETWEEN SAID PLATES AND THENCE REFLECTED AND REFRACTED TOWARD SAID CELL SO THAT LIGHT IMPINGING ON THE ENTIRE AREA OF THE FRONT PLATE IS TRANSMITTED TO SAID CELL CONCENTRATED TO A RELATIVELY NARROW RECTANGLE OF LIGHT EXTENDING PARALLEL TO THE AXIS OF SAID CELL.