Abstract: A method and device for generating a collimated laser beam which is circular in cross-section, non-astigmatic, diffraction-limited and has a gaussian energy distribution are disclosed. The device comprises a single mode optical waveguide having an input end and an output end, a laser diode optically coupled to the input end of the optical waveguide for producing at the output end thereof a laser beam which is circular in cross-section, non-astigmatic and diffraction-limited and has a gaussian energy distribution, and a collimating lens for collimating the laser beam. The collimating lens is disposed in spaced relationship to the output end of the optical waveguide such that the output end is positioned at the focal point of the collimating lens.

Abstract: A laser scanning system for scanning a laser beam across a material, comprises a laser source for generating a laser beam travelling along a first optical path and a beam reflector in the path of the laser beam. The beam reflector is rotatable about a rotation axis and includes a single mirror facet which extends in a plane oriented at an angle of 45.degree. relative to the rotation axis and has a center of rotation lying on the rotation axis, for reflecting the laser beam into a scanning beam moving at a substantially constant angular velocity. A scan lens is disposed in the path of the scanning beam for focusing the scanning beam onto the material. The laser scanning system of the invention further includes a support for supporting the laser source, beam reflector and scan lens relative to one another. The support has a unitary body formed with a first bore extending through the body.

Abstract: A motorized sheet film cartridge comprises a light proof housing which defines an opening in its top wall. A refillable tray containing stacked sheet films is slidable in the housing. The housing includes a slidable door which displaces in a longitudinal direction horizontally over the tray and its content of sheet films between open and closed positions thereof. In its closed position, the door closes the housing opening, whereas in its open position, sheet films contained in the housing can be removed therefrom through the opening. The door is operated by a reversible DC motor which drives a pair of endless chains provided on each longitudinal side of the door for displacing the door between its open and closed positions. The motor is actuated by an external computer to appropriately open or close the door. The computer also verifies that the door is closed except when film is being loaded in the cartridge or unloaded therefrom through the opening. The cartridge is removable and portable.