Abstract: An exterior framing projector is adapted for use in all weather conditions and includes a hermetically sealed housing with the clear cover over one end through which the light image is projected. The components of the projector are mounted and sealed within the housing and may be positioned on a base carried in the housing with the various components mounted in a manner to be adjusted relative to one another to control focus and image size. A lamp positioning system is provided for assuring accurate alignment of the lamp with the ellipsoidal reflector of the projector.

Abstract: A lantern having a base, a globe, and a top is provided with a slidable shutter which is movable between an open position in which light can shine through the globe throughout 360.degree. and a closed position in which the shutter blocks light from shining through a portion of the globe. The globe has a generally rectangular transverse cross section provided by a pair of generally flat front and back surfaces and a pair of generally flat side surfaces. The shutter is slidable within a pair of tracks which are provided by ribs which extend along the sides of the back surface. The shutter is releasably latched in the closed position by a pushbutton latch on the top of the lantern.

Abstract: A luminescent fixture for providing sustained illumination suitable for television, video and film production includes a plurality of parallel mercury vapor luminescent lamp tubes aligned in close proximity in a common plane bisecting an acute concave angle defined by high reflectivity facing surfaces of a pair of longitudinal reflector panels. A plurality of separate electronic ballasts located at the base of the extending reflector panels provide a plurality of unsynchronized electrical current pulse trains each for exciting pulsed ultraviolet light emissions from Hg vapor within a particular set of lamp tubes at a rate sufficient to excite/stimulate sustained luminescent light emission from the phosphors in the emulsion coating lining the interior of the light tubes, i.e.

Abstract: A dimmer for variably adjusting light transmitted through it to a fiber optic bundle from a light source whose own intensity is not to be adjusted. A body has an axial passage for light to pass through. A plurality of opaque vanes is symetrically arranged in the passage. They meet at an apex located on the axis. Each vane has an axis of rotation in a plane normal to the axis and are rotatable to vary the amount of light which is transmitted. These vanes are coordinated for simultaneous and identical rotation.

Abstract: In this automobile lighting system there is (i) a light source that develops light when in an "on" state, (ii) an elongated light guide that has an input end for receiving light from the source and an output end to which this light is transmitted by the light guide, (iii) an indicating device at the output end for controlling the passage of light from the output end to a location exterior to the automobile, and (iv) a lens located between the indicating device and the exterior location for receiving light passing through the indicating device from the light guide output end. The indicating device comprises a shutter having an opaque portion, a light blocking position in which the opaque portion blocks the passage of light from the output end to the lens, and a non-blocking position in which light is allowed to pass through the indicating device to the lens.

Abstract: A lamp shade including a plurality of light deflecting elements. The light deflecting elements are rotatably mounted so as to be independently rotated with respect to the frame and one another. In one embodiment the light deflecting elements are mounted end to end to allow vertical variation in light intensity and direction. In another embodiment the light deflecting elements are both horizontally and vertically disposed to increase versatility in both appearance and lighting effect. Thus, the lamp shade which advantageously allows the light to be directed in accordance with the particular area in which the light fixture is placed, both to shield the user's eyes and to direct light where it is most needed.

Abstract: To correct variation of a property of light orientation induced by inclination of a vehicle body during a cornering operation, a projector type cornering head lamp including an inclination sensor further includes correcting means. When the correcting means is mechanically constructed, it comprises a pair of opening portions formed on a light shielding plate, shutters for closing the opening portions therewith and solenoids for pulling the shutter downwardly in response to an output from the inclination sensor. When the correcting means is electrically constructed, it is constituted by a circular liquid crystal element preferably comprising a supertwistnematic liquid crystal and serving also as a light shielding plate.

Abstract: An apparatus for producing spectrally different light distributions which have the same irradiance is disclosed. This apparatus contains a light source and an adjustable, opto-mechanical filter means. The filter means contains an adjustment means for simultaneously varying the spectral distribution of light passing through the filter while maintaining the flux of the light at a substantially constant irradiance level.

Abstract: An optical arrangement for high-powered projectors has a metal vapor lamp integrated into an ellipsoidal mirror, and an additional mechanical light valve for the continuous control of brightness of the stream of light, and is especially for use in multi-, super-shuttered and large projectors. The compact structure offers high optical efficiency and, at the same time, slight technical expense. The use of this technology makes possible the production of high-powered diaprojectors with small dimensions and light weight.

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: A dimmer for adjustably attenuating light to a fiber optic bundle. An opaque vane has a movement axis with a band on each side. One band has a substantially opaque portion which blocks about 50% of the light of a spot directed against the vane, and an opaque portion for passing about 50%. The other band has transmission slots interspaced between opaque bars, proportioned and arranged to pass varying amounts of light, all as a function of the position of the vane. The light passed by the bands is additive.

Abstract: A multifunction spotlight and control system therefor, the spotlight functions each being adjustable by a bipolar stepper motor, a control means such as a dimmer unit for enabling analogue control of the rotational positions of the motors, and a second control means such as a microprocessor which enables a multichannel serial datastream to be supplied for selectively controlling the motors.

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 daytime headlight illumination device carried by a motor vehicle such as a motorcycle or a car for better visibility thereof to other motor vehicles comprising a motor vehicle headlight assembly including a light source and a headlight lens and a shutter assembly located directly in front of the headlight lens and in the path of light rays originating from the light source, the shutter assembly including a plurality of fluorescently colored movable shutter blades and means for moving the shutter blades between an open position for use during nighttime wherein the light rays are passing through only the headlight lens and a closed position for use during daytime wherein the light rays are passing through the headlight lens and the fluorescently colored shutter blades so as to make the motor vehicle carrying the device highly visible during the daytime.

Abstract: A matrix display of the back-illiminated electromechanical type has enhanced picture display features by including display elements whose brightness is individually adjustable.In one arrangement, each display element has an aperture and an opaque shutter selectively settable to each one of at least three stable positions. In one position, the shutter covers the aperture completely, and in the other positions, it uncovers the aperture to a differing extent so as to pass light of differing intensity depending on the position.The activating mechanism for the matrix display is a moving head having two magnetic actuators arranged side-by-side for each row of display elements. One magnetic actuator serves to accelerate the shutter of a selected display element, and the other applies a braking force to halt the shutter in the desired position so as to control the brightness of the display element.By providing a group (e.g.

Abstract: A containment shield for a replaceable Xenon lamp and reflector module provides a safe, simple means of replacing and handling an arc lamp (10) for a light valve projection system. Guides (93, 94) are provided which act as a means of positioning and allowing easy removal of a lamp module (97). These guides also provide the mounting structure for a spring (112) that locks the lamp module into the guides to prevent removal unless the containment shield or shutter (91) is on and the means for releasing the shutter once the lamp module is in place. A shutter release screw (110) is locked into its mounting bracket to prevent its total removal. This insures that the screw will be there to release a shutter and not be removed or lost. The lamp module itself is composed of a rectangular mount plate (99) which provides the support for the arc lamp (10), reflector (100) and other components.

Abstract: A framing projector providing for alternatively mounting different optical lighting effect elements is disclosed. The projector includes a housing having a low voltage light source mounted to a removeable rear end-cap at the rear of the housing for directing a beam of light through a removeable optical effect element mounted to a removeable front end-cap. The front end-cap is adapted to alternatively mount a framing shutter system, an adjustable iris assembly, or a photographic slide and template holder. An adjustable double convex asymmetrical lens system is mounted to the front end-cap forwardly of the optical effect element and projects and focuses the image created by the optical effect element.

Abstract: A radio-controlled TV or movie studio spotlight or general purpose illumination instrument; two joy sticks, one for the pan or tilt, the other one for the dim or iris adjustments and settings, respectively, are installed on a panel of a 4-channel radio transmitter accessible for manual actuation to provide the respective commands for a four-channel radio receiver and thereby for the remote control of the lighting equipment functions.

Abstract: A signal lamp having in its housing with an opening, a bulb, an optical elements installed in the housing for converting the light of the bulb into parallel rays of light, a colored lens being colored differently in plurality of regularly disposed patterns, a slit plate installed slidably and provided with portions pervious to light corresponding to said pattern in shape and a solenoid, by which the slit plate is shifted and the radiated light is converted in its color.

Abstract: This invention, in the preferred embodiment, relates to battery powered hand held lamps, commonly known as flashlights, or when in compact form as pen or pocket lights. More specifically, the invention relates to quasi-blackout applications and uses that require fast visual recovery in darkness and minimum personal exposure of the operator of the device.

Abstract: A light reflector for specific use in combination with an elongate light source such as a fluorescent lamp. It has a plurality of reflecting surfaces disposed behind and symmetrically of the light source and includes opposed central tangent reflecting surfaces. The cumulative effect of the reflecting surfaces is to synthesize the light rays emitted upwards with those emitted downwards by the sourve towards the area to be lighted.

Abstract: The present invention provides a spotlight adjusting system for controlling the beam of a spotlight. A ellipsoidal reflector-lamp assembly is movable to a plurality of positions relative to the iris. The diaphragm of the iris is independently adjustable to a plurality of positions so that the light being reflected from the focal area of the reflector assembly can be controlled between passing the full beam received at the iris to a portion of the beam received there. The rear lens is adjustable relative to the iris and the front lens. The system provides mounting structures for both a long throw and a short throw front lens so that the system can be selectively mounted with either a removable long or short focal front lens.

Abstract: A light projector suitable for performance lighting and provided with a means capable of adjusting beam azimuth and elevation from a remote location is provided with an input device locating the operator's finger, hand, or a stylus in two dimensions by non-mechanical means. The azimuth and elevation control means is capable of operation in either an incremental or rate of displacement mode.

Abstract: A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light source is comprised of a frame having a plurality of shutter leaves capable of opening and closing an aperature when actuated. Each shutter leaf is comprised of a colourless or coloured transparent portion and a portion that is coated on its inner surface with a reflective material.

Abstract: Generator having a light source of high intensity which is passed through colored filters and into fiber optic bundles, the ends of the bundles being moveable relative to a kaleidoscope-type projecting lens.

Abstract: The invention discloses an auxiliary head lamp device for a car equipped with a cover which is optionally fitted to a car and is lit during driving in fog or the like. The cover of this device can be opened when a solenoid of a cover driving mechanism is energized by operating a switch disposed inside the room of the car. The solenoid releases engagement of a stopper that restricts the cover urged in the opening direction. The switch may be used also as a switch for a light source bulb. After the solenoid is energized and the opening operation of the cover starts, a current to the solenoid is automatically cut off so that over-heat or burn-out of the solenoid that would occur if the current is continuously applied thereto can be prevented.

Abstract: This invention discloses an auxiliary head lamp device for a car equipped with a cover, which head lamp is optionally fitted to a car, is lit when driving in fog and is equipped with a cover that can be opened by remote switching operation. The cover of this head lamp device is opened when a solenoid of a cover driving mechanism is energized by operating a switch disposed inside the room of the car. The solenoid may have a function of releasing the cover from a stopper which restricts the cover from moving in its opening direction. The switch may be used also as a switch for the bulb of the auxiliary head lamp. An electric circuit including two thermostat switches for preventing over-heat of the solenoid is preferably employed. The solenoid may be in deenergized state while keeping the bulb lit. A device equipped with a rotary solenoid for directly opening and closing the cover is also disclosed.

Abstract: This invention concerns an electronic flashlight for ophthalmological examination instruments.

Abstract: A light-gathering device for transmitting through fiber optic bundles, the light emitted by an electronic flash along with the light from a continuous light source so that relatively small objects may be lit so as to photograph them. A first housing (8) is provided, designed to receive a flash tube (1) of an electronic flash unit, and a "model"(3) emitting continuous light, the first housing (8) being enclosed within a second housing in which there are several openings for inserting the ends of fiber optic bundles (2) whose opposite ends are used for illuminating the object to be photographed. Manual shutters (5, 6, 7) are provided for varying the light intensity from the flash tube to the fiber optics (2). This light gathering device is suitable for taking top-quality color photographs which have the desired lighting effects.

Abstract: An improved device for controlled illumination of a cavity such as in endoscopy or inspection of machinery within a housing; the device comprises a light source and a fiber optics for feeding light into the cavity, and a control means arranged between the light source and the entrance plane of the fiber optics for controlling the luminous density at the exit plane of the fiber optics; the control means is in the form of a diaphragm disc arranged between the light source and the entrance plane of the fiber optics and is capable of linear or rotational displacement or motion; the disc has an opening having a width that varies cross-wise to the direction of displacement or motion of the disc-shaped diaphragm so as to provide a variable aperture; the luminous density at the exit plane will, in general, be determined by the light flux that impinges upon the entry plane, and that flux is controlled by the variable aperture.

Abstract: A light source unit for an endoscope is provided with a light-emitting element and a light receiving element which are provided in an eyepiece section of an endoscope. The light-emitting element is supplied with current modified by a specific frequency from an oscillating circuit and produces a light-intensity modulated light. An output signal from the light receiving element is supplied to a filter circuit and a signal of the specific frequency component is taken out from the filter circuit to be compared with a reference voltage in a Schmidt circuit. When an operator approaches to the light receiving element and enters a range within a predetermined distance from the light receiving element, a light intensity of the light which is emitted from the light emitting element toward the operator, reflected from the operator, and is incident on the light receiving element, becomes large. As a result, a signal level supplied to the Schmidt circuit exceeds a predetermined value.

Abstract: An illumination device for photographing a portion of the body cavity to be examined with an endoscope having a light source using a discharge tube circuit for illuminating the portion to be examined and a mechanical shutter arranged in the optical path of illuminating light from the light source. A light quantity detecting circuit detects information on the brightness of illumination of the light source and a correct exposure time setting circuit together a correct exposure time estimating circuit receive the output from the light quantity detecting circuit. The closure of the mechanical shutter is controlled by the control operations of the correct exposure time setting circuit and correct exposure time estimating circuit. The discharge tube circuit comprises a time constant circuit, a relay circuit and a high voltage circuit. The high voltage circuit is controlled by the relay circuit to intermittently apply a voltage to start discharge until ignition takes place.

Abstract: An illuminating device for providing a light beam having a substantially uniform cross-sectional flux comprising a light source, an optical conductor, the optical conducting having an inlet and an outlet surface and a curved body portion therebetween, the curved body portion forming at least substantially a portion of a circular ring, optical means for directing light from the light source to the inlet surface of the optical conductor, and means affecting the flux of light arranged transversely and displaceable to the path of the light beam between the light source and the inlet side of the optical conductor whereby the optical conductor provides the uniform flux at the outlet surface.

Abstract: A temperature control device is provided which comprises a thermostatic control means. The thermostatic control means is for automatically controlling the temperature of a location to a predetermined temperature. A means is additionally provided for setting the predetermined temperature. The means for setting includes an elongated temperature scale and a set point. The scale and set point are movable with respect to each other. The set point indicates the predetermined temperature on the scale.The scale has associated therewith different colors along the periphery thereof. A means for illuminating the temperature scale near the set point is provided to reveal the color associated with the predetermined temperature. Thus an observer of the temperature control device, knowing the colors associated with the temperatures or knowing the colors at which he is most comfortable, can immediately observe from a distance the predetermined temperature at which the device is set.

Abstract: An apparatus for controlling the light intensity output from an arc lamp for use with an arc lamp-illuminated projector includes a light valve to control the projector output light intensity by the selective positioning of the light valve in all or a portion of the light path between the arc lamp and the projector output. The light valve is operatively coupled to the output of a magnetically coupled clutch, the input of the clutch being continuously driven by a motor. A programmer applies a voltage proportional to the desired light intensity to the clutch for controlling the degree of magnetic coupling, and therefore the position of the light valve. The variable torque applied through the clutch to the light valve may be countered by a variable counter-torque produced as by a spring to establish the desired continuous range of equilibrium positions of the light valve.

Abstract: A shutter system for stage-lighting spotlights includes a housing having a fixed framing gate therein which has an opening therethrough for the passage of light. Two sets of opposing shutter blades are sandwiched, one on each side of the framing gate, between the framing gate and one of a pair of pressure plates which have means urging them toward the framing gate. Each shutter blade has a neck portion which extends through a slot in the housing and which serves as a handle to which pressure may be applied to move the shutter blade. The blades are normally held in place by the action of the pressure plates against the blades and framing gate.

Abstract: The cross section of a beam of light may be controlled by three spacedly superimposed circular plates formed with respective, central apertures circular about the axis of the passage defined by the aligned apertures. The central plate defines with the two outer plates respective gaps in each of which two slides may be moved toward each other into a position in which they jointly block the passage, the paths of the two pairs of slides being perpendicular to each other. Springs hold the stack of plates and slides together so that the slides are guided by the plates bounding the corresponding gap, but thermal expansion of the elements of the stack does not interfere with the mobility of the slides which may be adjusted manually.

Abstract: A surgeon's headlight utilizing an adjustable iris diaphragm to allow continuous variation of the diameter of the illuminated spot.