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4294546 |
Apparatus for working aligned bores
Apparatus for working of aligned bores, particularly for repairing of crank shaft bearings and their bores of internal combustion engines. In the region of the bore to be worked on there is...
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RE30673 |
Side view mirror employing prism for blind spot correction
There is disclosed a composite mirror assembly adapted to be mounted adjacent the driver of a vehicle to enable the driver to view objects, as other vehicles, within an area normally hidden from...
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4277148 |
Conical split-image microscopic lens
The disclosure is a microscopic lens comprising three component lenses with concave and convex conical sections which refract light rays. Rays emanating from an object pass through five conical...
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4252401 |
Parallel optical scanning device
A parallel optical scanning device, of the type comprising two prisms of small apex angle which rotate in opposite directions at the same speed about a common axis, wherein each of the prisms is...
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4240706 |
Optical probe
An optical probe is particularly for use as part of the viewing system of a radiation pyrometer, e.g. for measurement of temperatures of turbine blades in a gas turbine aeroengine. Although the...
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4182552 |
Side view mirror employing prism for blind spot correction
There is disclosed a composite mirror assembly adapted to be mounted adjacent the driver of a vehicle to enable the dirver to view objects, as other vehicles, within an area normally hidden from...
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4127828 |
Optical beam expander for dye laser
A multiple prism beam expander for use in dye lasers and the like comprising two or more prisms positioned relative to each other and between a dye cell and diffraction grating such that laser...
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4125864 |
Beam splitter
A beam splitter is disclosed in which a light beam entering a block of light-transmitting material is internally reflected a plurality of times between a pair of parallel sides, one side being...
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4118763 |
Variable transmission prismatic refractors
Luminaire globe has external prisms formed to provide controlled amount of emitted light in various portions of the globe. The prism comprises a combination of right angle reflecting surfaces and...
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4118109 |
Optical apparatus for controlling the direction of a beam of optical radiation
Apparatus for controlling the direction of a beam of optical radiation from, say, a laser, includes two prisms of small apex angle independently rotatable about a common axis. A control circuit is...
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4099851 |
Reading aid
A device designed to help persons of impaired vision to read written or printed texts on a horizontal surface comprises an elongate lens mount with a base having a bottom slot which extends in...
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4090774 |
Prism arrangement for scanning infrared images
The invention provides a particular prism arrangement suitable for use between a source of infrared image and a receiving element suitable for receiving infrared radiation. The prism provides for a...
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4017153 |
Polarization analyzers and duplexers
A polarization analyzer of the type comprising a non-absorbent or weakly absorbent body comprising a dielectric layer with two interfaces, one of which receives an incident wave produced by an...
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4016504 |
Optical beam expander for dye laser
A multiple prism beam expander for use in dye lasers and the like comprising two or more prisms positioned relative to each other and between a dye cell and diffraction grating such that laser...
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4003637 |
Focusing screen for reflex cameras having integral range finder means
A focusing screen of a type incorporating range finder prisms in a generally centrally disposed area thereon characterized in that the prisms are of microprism type and are arranged into concentric...
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3940609 |
Angular position measuring apparatus
Angular position measuring apparatus includes a prism mounted on a shaft whose angular position is to be determined, and a light source for directing a beam of light onto the prism. The prism is...
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3907430 |
Optical bandpass filter
A tunable optical bandpass filter arrangement which, in a preferred embodiment, exhibits an output which is collimated and co-linear (with the input) and has relatively low transmission losses,...
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3900263 |
Method for minimizing deviation in optical dispersion systems
Light is disbursed such that its wave length components are displaced approximately as a linear function of wave length by subtracting deviation which is non-linear in one manner from deviation...
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3880499 |
Light painting with stepped prisms
Stepped prism sheets of a formed transparent plastic are provided having flexible or rigid interconnecting webs between adjacent prisms or the vertex of one prism and the base of the adjacent prism...
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3827787 |
ARRANGEMENT FOR ELIMINATING INTERFERENCE REFLECTIONS IN A LIGHT DEVIATING DEVICE
Device for deviating light comprising two optical prisms driven in a rotating movement about a same axis, each of these prisms having an opaque sleeve crossing it from one face to the other and...
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3807837 |
COMBINATION OF DOUBLY REFRACTING PRISMS
A compound prism having an even number of doubly refracting component prisms having equal or substantially equal refracting angles. The component prisms are arranged one behind another so that for...
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3794829 |
NON-LUMINANCE LIGHTING PANEL
A transparent prismatic low luminescent lighting panel of a type having a plurality of refracting prismatic elements on its outer surface in the form of pyramids or cones, said elements having...
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3788733 |
LASER DIRECT FIRE SIMULATOR EMPLOYING REFRACTIVE MEDIA
Optical beam refracting means adapted to fit within a gun barrel are desid to cooperate with a laser beam generator positioned in the same gun barrel. Micrometer adjusting means are provided...
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3771514 |
LARYNGOSCOPE
A laryngoscope which allows concurrent direct and indirect viewing of the larynx, especially when direct viewing is difficult or otherwise impossible. Such indirect viewing is permitted by the use...
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3727242 |
LIQUID LEVEL INDICATION APPARATUS
Apparatus for indicating level of liquid in a recirculation type toilet or in other containers or tanks comprising an indicator lens which is free from any moving elements and indicates the level...
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3726586 |
WEDGE SHAPED OPTICAL BODY
A wedge-shaped optical body that may be used as a component of a rear vision system for an automobile comprises a pair of rigid glass faces set at an angle of convergence to one another such that...
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3720298 |
PRISM ALIGNMENT MEANS FOR A CHARACTER AT A TIME PRINTER
To enable aligned printed web-carried symbols, which are out of the line of sight, to be seen from a regular position adjacent the keyboard of said printer, a prism bends source light to illuminate...
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3717402 |
LIGHT COLLECTOR FOR GAMMA RAY CAMERAS
A light collector for use in an optical system for collecting light falling outside a predetermined area, the collector comprising an elliptical plate of transparent material having an opening...
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3697736 |
AIRFIELD INSET RUNWAY LIGHT
In an airfield inset runway light a prism of substantially rhombic cross section is mounted in a housing with the major axis of the rhomb in substantially horizontal position and the prism is...
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3628854 |
FLEXIBLE FRESNEL REFRACTING MEMBRANE ADHERED TO OPHTHALMIC LENS
A thin, fully conformable, plastic membrane which can be applied, and made to adhere with finger pressure, to spectacle lenses for quickly and impermanently changing one or more optical...
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3547526 |
OPTICAL BEAM CROSS-SECTION CONVERTER
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3544200 |
CASCADED LIGHT BEAM DEFLECTOR SYSTEM
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3539251 |
ROTATING PRISM SYSTEM
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3535025 |
MOSAIC PRISM STRUCTURE
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3510222 |
METHOD AND APPARATUS FOR MEASURING OPTICAL PROPERTIES IN THE SURFACE OF MATERIALS
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3497289 |
PRISM VARIABLE ANAMORPHIC OPTICAL SYSTEM
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3448618 |
LIQUID LEVEL INDICATING ELEMENT
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3422273 |
OPTICAL DEVICE
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3419321 |
Laser optical apparatus for cutting holes
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3417730 |
Sight gauges
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3416867 |
Photometer using a prism with surface lenticulations
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3413067 |
Light conducting rod endoscopic instrument which makes use of the principle of total internal reflection to sight perpendicularly to the rod axis
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3405992 |
Low reflection lenses and prisms
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3362224 |
Liquid level indicator
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3334538 |
Sequential time delay display device
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3333502 |
Non-magnetic compass comprising a movable prism mounted above a display surface
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3329060 |
Temperature compensated refractometer
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3322022 |
Prismatic distance measuring instrument having a plurality of discrete prisms
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3306974 |
Color reproduction with a monochromatic gradient line image
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3269258 |
Means for correcting depth-of-field error in a projection system
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