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4019026 |
Laser beam label reader head
A laser beam label reader head of single common axis type wherein light reflection coming from a laser-irradiated label along the axis of a scanning laser beam is diverted by an apertured mirror...
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3984591 |
Process for forming a metallic oxide coating
A metallic oxide coating is formed on a substrate which may be vitreous, partially vitreous or nonvitreous by applying to the substrate a solution of one or more metallic salts selected from the...
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3978272 |
Coated article for solar control and process for its production
Multiple layer films of silver-silver oxide and metal oxide are produced on transparent substrates for purposes of solar energy control and production of architectural colors. Solar control...
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3976875 |
Photodetector filter structure
A transparent dome formed from a segment of a spherical shell of uniform thickness has an optical filter on its surface. A photodetector is positioned on the concave side of the dome so that light...
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3963330 |
Apparatus for improving human visual response during conditions of reduced ambient illumination
Apparatus for improving vision under conditions of relatively low intensity ambient illumination. An improved lens is of the concave meniscus type and has a total power in the range of between...
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3929487 |
Spectral balancing means for color photography
A photographic material comprising a spectral balancing means for color photography consisting essentially of a layer of magenta dye and yellow dye.
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3926835 |
Infrared transmitting filter containing 1,4,5,8-tetracyclohexylaminoanthraquinone
Optical filters comprised of a plastic film having incorporated therein a mixture of dyes including the compound 1,4,5,8-tetracyclohexylaminoanthraquinone are substantially opaque to visible...
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3914516 |
Sun protection glass
A sun protection glass comprises an absorption free base glass having a light absorbing thin vacuum vapor deposited layer comprising a mixture of a non-metallic embedding material of low absorption...
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3914024 |
Photographic objective having a polyester base color temperature conversion filter
The present invention relates to a conversion filter for color temperature to be properly disposed in the light path in the neighborhood of the iris surface inside of the photographing optics, such...
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3906510 |
Recording method by photosensitive materials
A method for recording movements of objects or datum lines is provided which comprises employing a photodevelopable photosensitive material, a dye filter having strong absorption in the ranges of...
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3903413 |
Glass-filled polymeric filter element
An optical filter element is provided which comprises a plastic resin containing a particulate dispersion of filter glass. In one preferred embodiment, the photocell of a photometric device, e.g.,...
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3888646 |
Process for producing special filter
A glass composite having utility as a Christiansen filter comprising a glass matrix having dispersed therein glass particles having the same refractive index as the glass matrix at one wavelength...
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3887485 |
Solid optical filter having selective wavelength permeability
The invention relates to a stray light filter comprising a solid light ray permeable material having a powder dispersed therein. The refractive index of the powder in the short-wave spectral range...
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3883436 |
PHYSICAL CORRECTION FILTER FOR IMPROVING THE OPTICAL QUALITY OF AN IMAGE
A family of physical correction filters is described. Each filter is designed to correct image content of a photographed scene of limited resolution. Each filter includes a first filter element...
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3879164 |
Method of isothermally heating articles with radiation
To uniformly heat a surface with a source of radiation, the surface having varying thermal heating characteristics in response to irradiation, a filter having radiation absorption characteristics...
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3850502 |
OPTICAL LENS ELEMENTS HAVING INFRARED ABSORBER
Metal complexes of the following formula are useful infrared absorbers in plastic optical elements: ##SPC1## Wherein Me is selected from the group consisting of metals of the first, second or third...
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3816223 |
FABRICATION MASK USING RARE EARTH ORTHOFERRITES
A mask for the manufacture of semiconductor and various small components. Rare earth orthofertites, such as GdFeO 3 , as well as YFeO 3 , and LaFeO 3 comprises the masking material. Rare earth...
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3809092 |
CONTACT LENS FOR VIEWING FLUORESCENT EYE TISSUE
During eye surgery, particularly cataract removal, visibility of lens and capsule tissue in the eye is enhanced by placing on the cornea a contact lens having a color near the ultraviolet end of...
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3785722 |
USE OF SiO -NB O AND/OR Ta O GLASSES AS ULTRAVIOLET FILTERS
Glass filters and their use in controlling transmission of radiation is disclosed. The filters have a sharp transmission cut off within the ultraviolet region of the spectrum and also withstand...
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3754816 |
STEEP-EDGE ABSORPTION FILTER
There is disclosed glass compositions, i.e., filters characterized by steep edged absorption curves in the wave length range λ = 380 - 475 nm. The filters are prepared by heat treating glass...
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3722985 |
NIGHT-VISION TRAINING GOGGLES
A night-vision training goggles lens formed as a unitary piece covering both eyes from a single thickness of a press-polished, dark-green-transparent sheet of synthetic resin having a color...
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3661436 |
TRANSPARENT FABRICATION MASKS UTILIZING MASKING MATERIAL SELECTED FROM THE GROUP CONSISTING OF SPINELS, PEROVSKITES, GARNETS, FLUORIDES AND OXY-FLUORIDES
A mask for the manufacture of semiconductor and other very small components. The mask is comprised of patterns of multi-component oxides and fluorides, such as spinels, perovskites, and garnets. In...
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3659918 |
COLOR SEPARATING PRISM SYSTEM
A color separating prism system for a television camera including several dichroic layers arranged at angles of less than 30° to a plane normal to the optical axis, which layers are successively...
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3658421 |
ENGINE AIR FILTER REPLACEMENT AND SIZE INDICATOR
A translucent conical member passes light therethrough from a lamp positioned within the member. When an annular carburetor filter is positioned on the member, the light passes through the filter...
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3619695 |
FOG LAMP
A fog lamp comprises an envelope and light source therein. Inside the transmissible part of the envelope is attached a vacuum depositing color-rendering film consisting of cadmium sulfide, cadmium...
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3602879 |
PHOTOGRAPHIC METHOD AND APPARATUS FOR PRODUCING POLYCHROMATIC ECHOGRAMS
The disclosure relates to a system for providing a three-color graphic representation of the subaqueous terrain. As in previous systems, a sound generator is used to transmit an acoustic signal to...
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3597046 |
COATED LIGHT PERMEABLE OPTICAL COMPONENT
A coated light permeable refractive medium for use in an optical system to discretely attenuate radiant energy beamed from a controlled light source whereof an area of metallic coating is disposed...
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3591263 |
PROTECTIVE GLASSES
Protective glasses for reducing glare and providing enhanced vision under unfavorable conditions, the improvement consisting of making the two lenses of different colors, one of orange to reddish...
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3589811 |
APPARATUS FOR SPLITTING UP A POLYCHROMATIC LIGHT BEAM INTO THREE COMPONENT MONOCHROMATIC BEAMS
In the production of three monochromatic images on photosensitive surfaces by splitting up a polychromatic light beam into three component monochromatic beams, a nondeformable compact optical unit...
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3571649 |
OPTICAL FILTRATION FOR UNDERWATER VIEWING, PHOTOGRAPHY, AND THE LIKE
The present invention provides selective color filtration devices for underwater viewing or photography, including the provision of a predetermined color-selective light-filtering coating on a...
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3569715 |
ELECTRO-OPTICAL TELEMETRY SYSTEM RECEIVER UTILIZING NEGATIVE FEEDBACK TO ELIMINATE ATMOSPHERICALLY INDUCED LOW FREQUENCY LIGHT BEAM INTENSITY VARIATIONS
An electro-optical telemetry system wherein a light beam is modulated with high frequency information signals for transmission to a receiver that includes a photodetector for transducing the...
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3543099 |
PHOTOELECTRIC CONTROL DEVICE
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3536402 |
COLOUR CORRECTION FILTER
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3522367 |
OPTICAL INFORMATION DISPLAY SYSTEM
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3516720 |
THIN FILM COATING FOR SUNGLASSES
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3482088 |
SOLID STATE LIGHT SOURCE
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3474039 |
HARD,MACHINABLE,TRANSPARENT ORGANOPOLYSILOXANE FILTERS,THEIR MANUFACTURE AND USE
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3468745 |
METHOD OF COLORING GLASS AND SAID COLORED GLASS
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3463790 |
1,6-DIAMINO-2,3:4,5-DI-O-BENZYLIDINE-1,6-DIDEOXYGALACTITOL
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3445153 |
PHOTOPIC AND SCOTOPIC 3-DIMENSIONAL VIEWING SYSTEM
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3436353 |
PHOTOTROPIC COMPOSITIONS
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3418048 |
Optical apparatus for photographic printing
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3407145 |
Photochromic means and methods
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3382393 |
Color television tube with faceplate panel of high transmittance in the red color
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3378636 |
Color television tube with ambient light filter
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3372282 |
Color coding optical reticle
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3322946 |
Reflector for reflecting color corrected light and heat
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3322678 |
Variable transmission compositions
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3320460 |
Electric lamp coating comprising agglomerates of silica coated with a pigment
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3296004 |
Neutral brown heat absorbing glass composition
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