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Document Title |
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4618918 |
Universal filter changer for theatrical lights
A universal filter changer for theatrical lighting units comprises a casing, a mechanism for attachment of the filter changer to the lighting unit, a set of filter holders with lighting filters,...
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4608622 |
Multi-function light source
A multi-function dental operating light source comprises a plurality of optical filters and reflectors mounted upon a turntable at spaced locations around the periphery thereof, the turntable being...
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4604680 |
Infrared floodlight
An infrared floodlight assembly designed particularly for security purposes and including a heat-conducting housing, a lens secured to the housing to provide a closure therefor, and a floodlight...
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4602321 |
Light source having automatically variable hue, saturation and beam divergence
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...
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4600976 |
Color changer mechanism
An improved color changer apparatus for use with lighting fixtures suitable for performance lighting is disclosed. Each of a plurality of parallel-spaced planar filters are adapted to be moved in...
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4586116 |
Vehicle headlamp with yellow and main light transmission
According to the invention clear and yellow transparent zones are provided on the surface of a light diffusing element associated with a headlamp for a moving vehicle. The light emitted from the...
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4575228 |
Illumination apparatus for copying machines
The disclosure describes an illumination apparatus for a xeroxgraphic copy machine which produces a copy of an original document. The illumination apparatus comprises a lamp, a shield which...
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4573110 |
Control device
A reflective screen with a gradient of reflectivity is moved by a control handle outside a cabinet to display different parts of the screen through a window to a LED and a phototransistor. The...
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4573111 |
Linear light passing media having certain striped characteristics
A linear light passing media, typically a linear prismatic lens or a linear diffuser strip, is provided with linear areas of coloration to give a striped effect to the media. Color or neutral...
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4571665 |
Apparatus for treating dental materials
In an apparatus for treating dental materials with radiation of a selected spectral range, a receptacle accommodating the material to be treated is surrounded by one or a plurality of fluorescent...
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4558402 |
Vehicle lamp assembly
A vehicle lamp assembly, of the type in which the color of the light to be produced by the lamp cannot readily be perceived when the lamp is not illuminated, comprises a housing having an inner...
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4546420 |
Air cooled light fixture with baffled flow through a filter array
A simple, light weight air cooled filter arrangement for a high intensity narrow band pass filtered light fixture. In lighting fixtures such as infrared energy sources or stage lighting, it is...
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4538213 |
Vehicle headlight attachment
In the preferred and illustrated embodiment, a vehicle headlight attachment is disclosed. The attachment comprises a concavo-convex surface boardered by an upstanding and circumferentially...
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4536833 |
Lighting fixture utilizing a multi-layered hologram as a lens element
A lighting fixture utilizing a spatially fixed light source and a multi-layered hologram as a lens element. The hologram receives light from the source and directs it to a task area. The layers of...
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4535396 |
Sunlight readable illuminated indicia display devices
Disclosed are indicia display devices that are sunlight readable and which comprise a lens system having one or more body portions each of which provides a transparent internal light reflecting...
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4535394 |
Variable color floodlight
A lighting system for use with a spotlight or floodlight in which the color of the light may be continuously varied. Red, blue, and green collimated light sources are provided adjacent a pyramidal...
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4530039 |
Multi-section multi-purpose hand light
A multi-section multi-purpose hand light incorporates a shade casing, a head cover, a refraction hood, red filter lens and a body comprised of a number of cylindrical sections. The red filter lens...
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4530041 |
Signal lamp with a movable slit plate
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...
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4525772 |
Vehicle lamp assembly
A vehicle lamp assembly has a light source, a light transmitting member, baffle elements of light absorbing material extending perpendicular to the surface of the light transmitting member towards...
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4524410 |
Incandescent lamp with film of alternately stacked layers
An incandescent lamp has a bulb with a built-in filament therein, and an infrared ray reflection film formed on one or both of the outer and inner surfaces of the bulb and containing a...
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4517628 |
Portable lighting device
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...
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4516195 |
Multi-function dental operating light source
A multi-function dental operating light source comprises a series of optical filters and flat reflectors mounted upon a turntable at spaced locations around the periphery, the turntable being...
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4511953 |
Theatrical light box
This invention is directed at a light box comprising a box-like base member and a cover. The base member has a storage compartment and a series of light chambers which are aligned with the storage...
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4502761 |
Gradient-free illumination of passive readout display devices
Compensating darkening is provided over the area at the back of liquid crystal displays, so that light from one or more concentrated sources near the back of the display may result in essentially...
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4497013 |
Illuminating apparatus
An illuminating apparatus is provided with an illuminating unit for forming a plurality of secondary light sources, the illuminating unit having a light source, a light converging device for...
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4495549 |
Infrared radiation filter lens for aircraft lights
An infrared radiation filter lens for aircraft lights is comprised of a heat-conductive filter frame disposed in heat-exchange relationship with an aircraft frame and/or its skin to dissipate heat...
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4488207 |
Static multi-color light signal
A static-type of multi-color searchlight signal for displaying one of a plurality of color signals including a plurality of parabolic reflectors, each having a focal point at which an associated...
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4482942 |
Projection unit including glass reflector with insulative cap member
An improved projection unit including a glass reflector having a forward reflecting portion which includes an internal substantially concave reflecting surface and an apex portion with an opening...
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4479173 |
Lighted instrument assembly
A hollow colored translucent body member has an open base end arranged to receive a light bulb. Such base end has spaced slots and also has an outwardly turned flange arranged to be engaged between...
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4473866 |
Vehicle light system
A motor vehicle light system provides constant lighting or directional indication in a simple and effective manner, and keeps the lens clean so that it can be seen even under inclement weather...
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4463410 |
Lighting device with dual reflecting members
A lighting device operable with solar beams propagating through and emitting from the optical wave guides. A pair of spaced concave and convex reflecting members are provided to effectively diffuse...
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4460940 |
Apparatus for uniform illumination employing light diffuser
A light diffusing device and an illumination apparatus employing the light diffusing device, the light diffusing device including a light transmission element and a light diffusing layer carried on...
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4460939 |
Device for producing a line of illumination
A device for providing a line of illumination in an optical reader, comprises an internally reflecting body having an elliptical reflecting surface joined to a part-cylindrical reflecting surface....
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4459644 |
Lights for automobile vehicles
The present invention relates to lights for automobile vehicles. The present invention proposes a light which comprises an elliptical mirror associated with a lamp to form a light-emitting device...
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4459014 |
Subtractive filter for the printing of color photographic film
A subtractive filter having three elementary filters, each comprising a fixed cylindrical central portion having at its center a channel for the passage of the light and on its surface a radial...
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4458303 |
Light beam concentrating, intensifying and filtering device
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...
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4454570 |
Multiple colored searchlight signal unit
A searchlight signaling device including a housing in which is mounted an optical system for producing colored signal lights. The optical system includes an objective lens for projecting the...
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4454568 |
Light pattern generator
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...
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4443831 |
Light means and method of lighting
A portable auxiliary light having a case, a battery positioned within the case, and a light house on the end of the case. The light also has bellows interattaching the case and the light house and...
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4439817 |
Stick-on fog light lens for headlight
A stick-on fog light lens, comprising a flexible sheet of amber colored transparent vinyl having a peripheral configuration cut to match that of the headlight of an automobile on which it is to be...
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4434454 |
Active lighting system including light control keyboard
An active lighting system including one or more light stands each supporting a plurality of individually adjustable colored light sources, and a keyboard unit having a plurality of switches and...
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4434455 |
Differential light emission translucent light bowl and cap
The light source of an area light or streetlight mounted on a lamppost is enclosed by a lower upwardly flaring bowl having its upper end closed by a generally conical cap. The cap and bowl are made...
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4433362 |
Remotely controllable illumination apparatus
A remote controllable illumination apparatus comprising an article with a predetermined shape; a luminous body incorporated in part of the article; an acoustic-electric transducer for producing an...
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4430695 |
Visual landing aids for aircraft
Apparatus for aligning an aircraft landing aid projector of the type which comprises a light source located at the focus of a parabolic reflector, a lens mounted coaxially with the parabolic...
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4428035 |
Electronic flashlight for ophthalmological examination instruments
This invention concerns an electronic flashlight for ophthalmological examination instruments.
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4425599 |
Cavity illuminating device
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...
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4425600 |
Electroluminescent wrist lamp for night vision environment
An apparatus for use in the cockpit of an aircraft which provides sufficient illumination to read the cockpit display indicators, controls and charts but does not destroy the pilot's night vision....
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4423469 |
Solar simulator and method
A solar simulator includes a lamp array of solar lamps pivotally connected to an array frame. The array frame is rotatably and pivotally mounted on a gantry crane, the elevation and lateral...
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4423472 |
Portable barge lights
A portable navigation light system for barges in which the legally required three lights are provided by a set of three, self-contained units. Each unit contains its own power supply, light...
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4418377 |
Apparatus to prevent reflection of vehicle instrument panel illumination light
A meter has a polarizing filter so that only light having a substantially horizontal wave motion is emitted therefrom. The meter is positioned beneath a canopy which prevents light from impinging...
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