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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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4409646 |
Multiple-effect light source, especially usable as a projector for photography, motion pictures and television or as a lighting apparatus
A light source usable as a projector for photography, motion pictures, television, or as a light panel, or as a lighting apparatus. This light source comprises a polyhedric housing constituted by a...
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4400764 |
Low backscatter illumination system
Methods and apparatus are disclosed for shaping illuminating beams from continuous duty searchlights or the like so as to minimize the effect of backscattered illumination and, to thereby increase...
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4397556 |
Material-testing method and apparatus
In materials-testing involving comparative examination of the surface of a particular material specimen, specimen surfaces are irradiated with monochromatic light and the Raman spectra of the...
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4392187 |
Computer controlled lighting system having automatically variable position, color, intensity and beam divergence
A lighting system (10) is disclosed which includes a control panel (12) for operating a plurality of lights (14) by means of a single two conductor signal cable (18) and a power cable (20). Two...
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4388678 |
Reading and viewing lamp
This invention provides an improved reading or viewing lamp that achieves extraordinary visual acuity when properly used. The lamp employs a quartz-halogen bulb together with a parabolic lens to...
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4386292 |
Projection lamp comprising single ended arc discharge lamp and an interference filter
A projection lamp comprises a single-ended metal halide arc discharge lamp disposed within a curved reflector and an interference filter disposed in front of the reflector, the filter being highly...
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4385344 |
Visible light apparatus for curing photo-curable compositions
There is provided a device for efficient production of light in the low visible range for photo-curing materials, the device being particularly adapted for dental applications. The efficient light...
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4380791 |
Electrically controlled additive lamp housing for optical printing
First, second and third dichroic filters are positioned at corresponding ones of first, second and third light sources for deriving red, green and blue beams, respectively, from the light sources....
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4376966 |
Strip lights and method of making same
A series of electric lamps spaced along the interior of a flexible vinyl tube, such lamps being connected in electric parallel with each other by a pair of insulated conductors that exit from the...
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4367514 |
Recessed lighting system
A recessed lighting system for a vechicle such as an airplane employs an exit lens mounted in the external skin of the airplane that has minimum cross-sectional area. The lighting system can...
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4366407 |
Incandescent lamp with selective color filter
An incandescent lamp utilizing a transparent heat mirror coating on the lamp envelope for transmitting radiation in a selected portion of the visible range to produce a desired color and reflecting...
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4361863 |
Illuminating device having a curved optical conductor
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...
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4355349 |
Lighting unit
A lighting unit for a glide path lighting system comprises a light source, a lens, and a colored interference filter part way across the light path between the light source and the lens, arranged...
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4335642 |
Stroboscopic tuning
A stringed musical instrument is tuned by illuminating a portion of a vibrating string with a monochromatic stroboscopic light source. The illuminated string portion is viewed through a...
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4333130 |
Slit illuminating device
A slit illuminating device of a compact size which is capable of performing effective illumination on an image original having a certain amount of thickness such as books, bound documents, etc.,...
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4333127 |
Electronic flashgun
Electronic flashgun having a rotatable reflector accommodating a discharge lamp, the reflector having means to move filters in front of the flash discharge lamp. The filters are inserted via an...
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4329737 |
Light-emitting diode arrangement
A light-emitting diode arrangement with a light-emitting diode that is light-transmissive in an axial direction of the type used in examining instruments for opthalmic optics. The light-emitting...
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4321659 |
Narrow-band, air-cooled light fixture
A simple, light-weight air-cooled filter arrangement for a narrow band pass filtered light fixture. In lighting fixtures such as infrared energy sources or stage lighting, it is necessary to filter...
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4318158 |
Bulbholder and filter assembly
This specification discloses a bulbholder assembly incuding a mounting carrying a coupling toward one end whereby the one end can be inserted into an aperture in a supporting wall and secured...
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4298920 |
Automatic gel changer for a spotlight
An automatic gel changer for remote operation, including a rotary solenoid associated with each gel frame to rotate such frames in and out of the path of the beam of light from the spotlight. Also...
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4292664 |
Dental plaque disclosing light and method
A dental plaque disclosing light for use in conjunction with a fluorescent dye plaque disclosing solution contained in a periodontal area of an individual's mouth is disclosed. A parabolic...
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4291365 |
Signal lanterns for optional colored light emittance
This invention concerns an attachment in and for a signalling lantern in which there are provided coaxial substantially transparent tubular bodies having mutual guide means so as to be movable...
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4290094 |
Underwater or weatherproof light
An underwater light which is fitted to the walls of swimming pools or tanks and is immersed in water. The electrical wires are connected to respective contact pins on the rear of the light and are...
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4287554 |
Radiation apparatus
Apparatus for producing ultraviolet radiation, particularly a quick-tanning or therapeutic sunlamp, has a source of substantially uniform ultraviolet radiation, including at least two closely...
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4271408 |
Colored-light emitting display
A plurality of cellular concave mirror surfaces are formed on a plate-like reflector unit, and a plurality of light-emitting diodes are disposed on these cellular concave mirror surfaces to jointly...
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4263641 |
Reflector for lighting and/or indicator devices especially for vehicles
The reflector has a transparent body in the form of a paraboloid with a light source located within the reflector along the axis of symmetry. The inner surface of the reflector has a plurality of...
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4241388 |
High contrast lamp assembly
A lamp assembly, particularly intended for use on a motor vehicle, comprises a reflector which receives a light bulb, and a first lens element which overlies the reflector and which has formed on...
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4240133 |
Quasimonochromatic light source
For enabling a quasimonochromatic high intensity light beam to be produced by a source having a lamp equipped with a cold light mirror, a heat protection filter in the light beam path and a system...
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4237523 |
Removable fog light filters
A removable fog light filter for automobile headlights or the like includes a retaining member adapted to be affixed to the rear of the headlight and having radially and forwardly extending arms...
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4225908 |
Lighting fixture and glass enclosure having high angle anti-reflection film
Lighting fixture having housing with an open side. A lamp is mounted in the housing and is capable of producing light rays which pass through the open side of the housing. A glass protective...
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4206501 |
Apparatus and methods for back illuminating a display surface
An apparatus for back lighting a display surface of a liquid crystal display includes a light source and a diffusing backplate interposed between the light source and the display. The diffusing...
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4206494 |
High throughput illuminator
A relatively high percentage of the light given off by a source lamp is gathered by four collector lens systems disposed around the lamp. The desired wavelength components of the light gathered by...
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4200823 |
Strobe lamp warning apparatus
A method and apparatus for causing a strobe-type lamp, i.e. gas discharge lamp, to produce readily discernible warning flashes. In a first embodiment, the light output of a strobe-lamp is partially...
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4183075 |
Illumination system for photographic enlargers
Illumination system for photographic enlargers having a chamber mounted between the lamp and the negative aperture and consisting of heat-insulating, non-staining material of high light reflective...
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4180847 |
Lighting display insensitive to extraneous light
For use with a lighted display which must be seen while energized in a high brightness environment, an arrangement which prevents extraneous light from entering the display for precluding ambiguity...
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4161014 |
Luminaire having a configured interference mirror and reflector
A luminaire useful in illuminating a task area and having particular application for roadway lighting includes a monochromatic light source which is preferably a low pressure sodium lamp which can...
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4125889 |
Transportation arrangement with spotlight projectors for illuminating trunnions of a molten iron ladle
A transportation arrangement with spotlight projectors for illuminating the trunnions of a molten iron ladle for viewing by an operator when engaging a hoisting hook with the trunnion of the ladle....
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4112482 |
Night light belt
A safety belt of reflective material having a side coupling, is provided with red or amber colored rear lamp and a red or white front lamp that is manually removable from the belt for use as a...
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4109301 |
Adaptor for photographic flash device
The adaptor is used as a means which exchangeably installs an optical supplementary means such as panels or filters in order to effectively take the photograph with a photographic flash device, the...
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4101957 |
Zoom operating light
An illuminating lamp for use in dentistry or medical clinic which provides for varying both the intensity of light output and the size of the illuminated area while maintaining a substantially...
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4096552 |
Electric jewels
A new article of jewelry such as a pendant with a necklace for being worn around a person's neck, the pendant including an ornamental case containing a dry cell battery and switch in circuit with...
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4095881 |
Efficient illumination system
An illumination system of particular use in document copiers wherein an incandescent lamp which may be of the tungsten-halogen type is located at the focal point of a reflector shaped as a conic...
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4048490 |
Apparatus for delivering relatively cold UV to a substrate
A dichroic filter system for delivering UV to induce crosslinking of photocurable organic compounds on a substrate, whereby substantially all the UV is reflected to the workpiece while undesired...
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4047020 |
Disguised emergency light
A disguised emergency light adapted to appear of a predetermined color when turned on and to appear other than the predetermined color when turned off. The light includes a light source...
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4042818 |
Lamp assembly
A lamp assembly comprises a hollow body having two recesses therein, a bulbholder and a reflector in each recess, and a colorless transparent lens extending across the openings of the recesses. In...
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4006377 |
Filter attachment for parabolic reflector lamps
Filters, in the form of lens covers, are provided for PAR lamps and attached to the outside thereof by means of a ring of heat-shrinkable tubing which both fastens and seals the filter to the lamp.
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3984673 |
External lighting system for hypobaric and hyperbaric chambers
A compact and safe means for providing high intensity cold light to illumte hyperbaric chambers. The lighting system is comprised of a high intensity light source and a dichroic mirror enclosed in...
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3971929 |
Safelight filter
The invention comprises a darkroom safelight having (a) a light filter consisting of negative color film which has been exposed to a white light source (such as a generally continuous,...
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3944320 |
Cold-light mirror
A cold-light mirror, especially suitable in the form of an ellipsoidal or hyberbolic mirror for an optical system for forming a light beam, comprises a metal substrate covered with a pigmented...
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