Abstract: The reflection mirror apparatus of this invention, which can be applied to light projector, sterilizing lamp and development device, improves the light reflection precision and the light collecting performance, making it possible to clearly focus the reflected on an object of interest. The reflection mirror apparatus consists of a reflection mirror body made up of two or more reflection mirror bases, and plate-like reflection mirror auxiliary members. The reflection mirror base body and the reflection mirror auxiliary members can be assembled and disassembled by means of screws to a desired size.

Abstract: The water- and air-cooled reflection mirror of this invention, which can be applied to light projector, sterilizing lamp and development device, cools with water and air the reflection mirror that is heated by intense heat of the light source. The water flowing into the water passages formed in the reflection, mirror base body cools the base body to cool the air present in the opening in the base body, thereby preventing overheating of the reflection mirror by the circulating water and cooling air.

Abstract: A mirror for use in a steamy environment such as a shower stall. The mirror has a recess for holding a cylindrical can of shaving cream while exposing half of the can for easy grasping. Either a magnet or straps may be used to hold the can in the recess. A water channel has a push button valve for controlling water flow. The stream of flowing water equalizes the temperature of the mirror with the surrounding environment. A fitting at the bottom of the mirror may be turned in order to direct a stream of water in any suitable direction to wash away shaving debris from a razor. The water supply for the mirror may be obtained from an existing shower head supply pipe and may be diverted exclusively to the mirror, so that when the mirror is in use, water flows only when requested by the user.

Abstract: A nonsacrifical laser hardened structure and method protects against incident high energy irradiation. A very thin outer face sheet with a reflective outer surface is laminated to a foam core which is further laminated to a support structure. The foam core includes liquid and vapor passages. A supply of liquid working fluid impregnates the foam core. A portion of incident irradiation energy is first reflected from the outer face sheet and substantially all the remaining irradiation energy conducted through the face sheet to be absorbed at the back of the face sheet into heat of vaporization of the liquid working fluid. Additional liquid working fluid is supplied to the back of the face sheet by capillary action through the foam core, and additional liquid working fluid is resupplied to the foam core through the liquid passages. Working fluid vapor is removed through the foam vapor passages.

Abstract: It is profitable to oscillate a beam on objects when a high power CO.sub.2 laser beam or a high power YAG laser beam welds or anneals the objects. In order to let a laser beam scan, a device for reciprocating a lens or a device for rotating two mirrors synchronously has been proposed. These devices suffer from the difficulty of cooling. Prior devices are not applicable to a high power laser. A parallel laser beam is first reflected by a parabolic mirror. Then a mirror which is reciprocally swaying by a galvanometer reflects the beam toward the objects. A water inlet and an outlet are mounted on a rear surface of the swaying mirror. Cooling water is carried out through coiled tubes. Excellent heat diffusion prevents the galvanometer from malfunction.

Abstract: An internally-cooled optical device 10 includes a manifold 14 having two oppositely disposed coolant input ports 18 and two oppositely disposed coolant output ports 20. The input and output ports arepositioned perpendicular to each other. The input coolant flow is divided into macro-channels 28, witheach macro-channel having an associated plurality of micro-channels 34 for carrying the coolant along a surface juxtaposed with a surface of the optical device faceplate. The micro-channels terminate in an exit plenum 36 of the macro channel. The exit plenum tapers down to an orifice 38 connected to a return header 42 for delivering the coolant to the outlet ports. The orifices of the macro-channels are sized according to the length of the micro-channels used in the macro-channel, so that each macro-channel has essentially the same pressure drop, and uniform coolant flow is provided in each macro-channel.

Abstract: In a laser beam relay unit for shifting the direction of a laser beam, two reflecting mirrors (31, 37) are placed in parallel to each other and at a predetermined angle relative to incident light, and are fixed to rotatable light guide members (33, 36), respectively. Reflecting-mirror holders (10, 20) are provided in the backs thereof with inlets for cooling air, air retaining sections, and outlets for discharging air. The reflecting mirrors are air-cooled and can be satisfactorily cooled due to the provision of the air retaining sections.

Abstract: An optical mirror is kinematically mounted at its sides on one fixed point and two movable points which points are supported by a frame spaced from the mirror. One of the movable points is a ball on a cantilevered arm which rests in a cone or groove in the mirror, the other movable point is a mechanical flexure prelaod mounting or a pneumatic preload mounting, which mountings serve to apply constant preload to such mirror. The mirror is made of ceramic material, of low thermal expansion or contraction and has water cooling passages therein. The frame is made of metal of higher thermal expansion or contraction. However such mirors, when reflecting a high intensity laser beam can thermally expand relative to the frame and must do so with minimal deformation from the desired optical contour thereof which result is accomplished by the resilient and constant preload mountings of the present invention.

Abstract: A monochromator 18 has a thin faceplate which reduces temperature-induced distortion in a strain-free region by placing it close to a two-level heat exchanger 46, 64. The heat exchanger has a first level 46 in juxtaposition with the faceplate 22 for efficient heat extraction, and a second level 64 which establishes a constant temperature plane along a neutral bending axis of the monochromator 18. The first level heat exchanger is operated at a temperature below the zero CTE point of the silicon faceplate so that the integrated CTE of the faceplate is approximately zero. Pumps 30 and 32 are disposed respectively at the coolant inlets 26 and outlets 28 for fine-tuning the coolant pressure so that a minimal pressure across the faceplate 22 may be established to minimize bending moments on the thin faceplate.

Abstract: A reflective mirror having a cooling unit attached thereto is provided with a layer of material deposited on the surface of a glass plate. This material has such properties that most of ultraviolet rays in a light beam emitted from a light source are reflected from the reflective surface of the reflective mirror (cold mirror) but infrared rays permit to permeate through the reflective mirror or are absorbed in the substrate of the reflective mirror. The cooling unit is disposed on the opposite side to the reflective surface of the reflective mirror to absorptively remove infrared rays emitted from the light source. The reflective mirror is preferably employable for an exposing equipment in which the reflective mirror of the present invention and a plurality of conventional reflective mirrors each made of an ordinary metallic material are arranged as essential components with a lower working temperature.

Abstract: A adaptive flow-control regulator is disclosed for use in controlling the circulation of cooling fluid through in a cooled laser mirror. The adaptive flow-control regulator utilizes a temperature-sensitive spring to control the movement of a plunger with respect to an orifice through which cooling fluid flows. Elongation of the spring is controlled by the temperature of the cooling fluid circulating around the spring. As the temperature of the coolant fluid increases from heating of the laser mirror, the spring contracts moving the plunger away from the orifice and allowing a greater volume of coolant to circulate through the mirror, thereby absorbing a greater amount of heat from the mirror structure. As the mirror is cooled by the circulating cooling fluid, the spring moves the plunger toward the orifice, thereby reducing the volume of cooling fluid circulating through the mirror's structure.

Abstract: An optical element having a thin, transparent plate containing a plurality of shallow cooling channels, and a transparent substrate immediately behind the plate with a plurality of inlet and exhaust ducts underlying and in fluid communication with coolant being circulated through the cooling channels of the plate. In use, the optical element may be configured as a beam splitter, mirror, or aperture sharing device by applying a coating that is at least partially reflective to the face plate of the element. Alternatively, if used as a window or refractive element, the above cooling structure can be applied to both faces of the element. Optical distortion can be further reduced by using a coolant having a refractive index matching that of the substrate.