Abstract: An arc length changing apparatus for an exposing device, and a method in which the light quantity incident on the peripheral and central portion of a Braun tube panel is made constant by changing variably the arc length of the exposing device so that bending phenomenon of a fluorescent film stripe formed on the internal surface of the panel is improved. Apparatus of the invention is comprised of a mercury lamp, a lamp house, a shutter and etc. as usual, and a circular control disc 10 having an elliptical opening 11 at its center and sprocket teeth 12 around its periphery, a rack 15a formed at one side frame of the shutter 3, a pinion 16 for meshing with said rack, and a sprocket wheel 13 integrally formed with said pinion and coupled with said sprocket teeth by a chain 14.

Abstract: Disclosed herein is a vehicular headlamp which comprises a lamp housing having a front portion opened; a lens covering the opening of the front portion; a lamp bulb installed in the lamp housing for generating light when electrically energized; a light reflector installed in the lamp housing for reflecting the light from the lamp bulb toward the lens; an angular position adjustment mechanism for adjusting an angular position of the light reflector relative to the lamp housing; a spirit level fixed to an outer surface of the light reflector to move therewith; and a window structure defined by either one of the lens or the lamp housing, through which the level is viewed from the outside of the headlamp.

Abstract: A color changer system mounted at the light beam emission end of a luminaire. The system includes a support frame secured to the housing and disposed transverse to the beam, a plurality of iris units each having a plurality of colored, translucent leaves rotatably attached to the support frame, and a circular control plate rotatably mounted to the support frame and having a control slot in which a thrust pin of each leaf is slidably movable and a control handle. The support frame and the control plate each have circular apertures with centers that are aligned with the beam axis. When the control plate is rotated, the leaves of each iris unit open or close in response to pressure against the thrust pin so as to control the coloring of the light beam.

Abstract: A lighting system aperture mechanism formed by a movable carriage including a frame with openings for aperture means. The frame is moved to position a selected opening around a beam of light, and an aperture means disposed in the selected opening may be rotated as desired to produce special effect patterns in the beam of light.

Abstract: A headlight for use in a vehicle and comprising a lamp body a reflective mirror mounted in the lamp body and having a front opening, a bulb mounted in the reflective mirror and acting as the light source of the headlight, a douser plate mounted on the lamp body at the location between the front opening of the mirror and the bulb and intercepting a part of the light emitted from the bulb. The douser plate is supported on the lamp body such that the douser plate can incline transversely with respect to the lamp body, and driving device is provided on the lamp body for transversely inclining the douser plate.

Abstract: A variable beam floodlight fixture is provided for simply and quickly changing the width of the beam by means of a single operating lever which controls ganged, multiple, pivoted reflector sections. Pivoted reflector sections are provided on opposite sides of a fixed central reflector, and the multiple sections on each side simultaneously pivot in different amounts under control of the operating lever to provide a uniform beam at the various angles available from the narrowest beam to the widest beam attainable from the fixture.

Abstract: A headlamp for motor vehicles comprises a light source of the type adapted to generate a concentrated unidirectional pencil of light, and a motorized deflector device for intercepting the pencil of light and causing continuous rapid scanning thereof within at least one predetermined solid angle to obtain a light beam of predetermined characteristics.

Abstract: A laser-type handpiece including a reflector pivotably connected inside a head section and a control sleeve which is connected to the reflector and fitted over the external circumference of the handpiece body so that the sleeve can move back-and-forth along the axis of the handpiece body, whereby the reflector can be adjusted to any desired angle by the back-and-forth movement of the sleeve. When this handpiece is used for dental treatment, the head section of the handpiece can be smoothly inserted into and taken out from a narrow oral region and the angle of laser beam can be changed easily.

Abstract: A bushing made of elastic plastic, spherically receives a ball pivot of an adjusting screw and is fixed in a socket which protrudes from a back side of a reflector. Two spring clips of the bushing grip two catches of the socket from behind, and two rails of the hollow journal cooperate with two slot links of the frame. This ball-and-socket mounting, which is coaxial with respect to the adjusting screw can be assembled by robots and does not cause any bending moments that unfavorably affect the reflector mounting.

Abstract: A stage lighting unit including a beam former and beam redirector. The beam redirector allows for the remote control of beam over a large expanse of the stage.

Abstract: A lamp assembly capable of functioning both as a fog lamp and a cornering lamp on a motor vehicle, comprising a fixed reflector within a housing, a movable reflector positioned forwardly of the fixed reflector, and a light bulb mounted to the fixed reflector and extending forwardly therefrom through an aperture in the movable reflector. The fixed reflector reflects the light rays from the bulb in the forward direction of the lamp assembly. Considerably less in size then the fixed reflector, the movable reflector pivots about a vertical axis between a first position, where it coacts with the fixed reflector to reflect the light rays forwardly in the use of the lamp assembly as fog lamp, and a second position where the movable reflector deflects part of the light rays toward one side of the lamp assembly to enable the same to server as cornering lamp.

Abstract: A lamp assembly capable of functioning both as fog lamp and cornering lamp on a motor vehicle, comprising a fixed reflector within a housing, a movable reflector positioned forwardly of the fixed reflector, and a light bulb mounted to the fixed reflector via a bulb holder, with the bulb holder extending forwardly from the fixed reflector through an aperture in the movable reflector. The fixed reflector reflects the light rays from the bulb in the forward direction of the lamp assembly. Less in size then the fixed reflector, the movable reflector pivots about a vertical axis between a first position, where it coacts with the fixed reflector to reflect the light rays forwardly in the use of the lamp assembly as fog lamp, and a second position where the movable reflector deflects part of the light rays toward one side of the lamp assembly to enable the same to serve as cornering lamp.

Abstract: A car light structure has the dual purpose of an auxiliary illuminating light and foglight. The light has a protective cover capable of automatically opening and closing, wherein the structure can light when opening the protective cover actuated by the revolution and counterrevolution of a motor, and can extinguish or light when closing the protective cover so as to achieve the dual purpose of an auxiliary illuminating light and foglight.

Abstract: An illuminated vanity mirror visor includes a light-transmitting housing which allows the utilization of a single light source such as a bulb which can be located behind the mirror to transmit light to opposite sides of the mirror through integral lenses for directing the light outwardly for use of the mirror in low ambient light conditions. The light-transmitting housing includes opposed spaced and curved light collecting surfaces at legs which extend towards opposite ends of the housing and terminate in integrally molded lens. In an alternative embodiment of the invention, the light source mounted between the facing spaced surfaces of the light-transmitting housing is rotatably mounted and includes multi-colored surfaces such that the color temperature of the light can be varied to provide different lighting effects for the user.

Abstract: A test pattern projector built into a color television camera, for adjusting the camera to desired conditions in order to attain a favorable quality of image immediately before use. A test pattern chart is illuminated with an illuminating light of an adjusted color temperature, forming an image of the test pattern chart on an image pickup apparatus. The color temperature adjustment of illuminating light emitted from a light source is effected by using a color temperature conversion filter and a color compensating filter both disposed in front of the light source. An interference filter or an absorbing filter with a wedge shape in cross section can be employed as the color compensating filter. The color correction depends, in the former, on the inclination thereof relative to the optical axis and, in the latter, on the thickness thereof intersecting the optical path.

Abstract: A variable light source includes a light (14) which projects a white light beam. Three filters sets (60, 62 and 64) each include three pivotable dichroic filter elements. Each element is rotatable around an axis perpendicular to the light beam in order to vary the angle of incidence to vary the hue of the light beam. Rotation of the filter elements also varies the white light transmitted past the filter elements in order to vary the saturation of the light. The distance between the light source (26) and the reflector (28) may be varied to change the divergence of the light beam.

Abstract: A variable-width-beam light apparatus is provided having a lamp and reflector assembly in which a lamp is supported for selective axial displacement along a longitudinal optical axis with respect to a focal point of the reflector to enable adjustment in the width or angle of divergence of an emitted beam of light. The lamp is selectively positioned by a rotatable knob carried by a lens of the assembly and positioned exteriorly at the front of the lens for operation. The rotatable knob connects with a shaft coupled by screw threads with a lamp engaging cylinder that is axially slideable in a tubular guideway such that rotational movement is translated to longitudinal movement to effect and control axial displacement of a lamp. The lamp is resiliently biased in a forward direction with respect to the lens.

Abstract: A lamp such as a fog lamp for a vehicle is provided with a housing which serves to mount an array of parallel louvers. The louvers are controlled by a heat driven actuator. Such as one which incorporates a shape memory metal actuator element. This actuator element is heated either by resistive heating or by direct heat of the light bulb when the lamp is activated. When heated, the actuator serves to pivot the louvers into an open position. Once the lamp is deactivated, heating of the actuator is terminated, and the louvers are automatically closed to protect the lens by a spring as the actuator cools.

Abstract: A lamp assembly for an automobile comprises a tilting member such as a lamp unit or reflector adapted to be moved by optical axis adjusting rods threadedly engaged with self-locking nuts relative to a support member such as a lamp unit casing or the like fixed to a vehicle body or the like so as to adjust an optical axis of the lamp unit or reflector. According to the invention, each self-locking nut is formed with two engaging grooves extending in directions perpendicular to each optical axis adjusting rod. One of the grooves has two opposite surfaces formed with round extensions extending toward each other. The other groove has a bottom having a convex along its generatrix.

Abstract: Interior light for vehicles with a reading mode in which the beam can be directed toward either the driver or the front-seat passenger as desired. The light has an opaque screen (13) in the path of the rays of light between the bulb (6) and the reflector (1). The screen has a cutout (15). The reflector (1) consists of at least two paraboloid reflecting surfaces (8 and 9) with optical axes (10 and 11) that meet at an angle .alpha.. The mask (13) is adjusted so that the cutout (15) directs the light against one or the other of the reflecting surfaces (8 or 9).

Abstract: A vehicle headlamp is provided wherein one or more reflectors scan a collimated beam of light to generate a desired light beam pattern and project it to the road. Electrical and mechanical driver means are also provided to change the mode of operation of the scanning reflector to change the pattern of light and its location on the road.

Abstract: A device for adjusting the angular disposition of a first object with respect to a plane. The first object is adjustably attached to a second object resting on said plane. The adjustment occurs when there is a change in the angular disposition between the second object and the plane. Two freely rotatable members are attached to the first object adjacent each other. Both members are rotatable in a direction parallel to the angle to be adjusted between the first object and the plane, and each member has a rotary rest position determined by its respective center of gravity. During the change in the angular disposition between the second object and the plane, one of the two members is rotationally fixed with respect to the second object and is rotated from its rest position according to the change in the angular disposition between the second object and the plane. The other of the two members remains in its rest position during the change in the angular disposition between the second member and the plane.

Abstract: A retractable searchlight for vehicles of the type which is movable from a working position to a retracted position includes at least one searchlight supported by a supporting device mounted upon a shaft which is rotatably driven by a motor. The supporting device is formed of at least two members, a first of which is secured to the shaft for movement therewith and a second of which is secured to the searchlight and is mounted so as to be displaceable relative to the shaft. Between the first and second members a disengagement means is located for enabling the second member connected to the searchlight to be displaced with the first member between the working a retracted positions during normal operation and for disengaging the first member from the second member when the searchlight encounters a resistance so that continued movement of the searchlight is interrupted thereby precluding injury to the arrangement or persons standing nearby.

Abstract: A generally concave reflector member is provided with three or more bosses having flat outer surfaces. The surfaces define a plane perpendicular to the axis of the parabola so that specific points within the parabola can be located with great precision. By using the bosses as reference points, lamp filaments can be accurately placed within the lamp structure, regardless of variations in the reflector member which occur during the manufacturing process.