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4248501 |
Light control device
An electromechanical display element is provided for use in light reflective and light transmissive display arrays. The display element has a moveable electrode electrostatically controllable...
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4193676 |
Data photographic device for camera
A camera is equipped with a member bearing data to be photographed such as a date and the like and a data light focusing optical system for projecting the illuminated data from the data member at...
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4160598 |
Apparatus for the determination of focused spot size and structure
The light power not occluded during a repetitive, transverse knife-edge scanning of a focused spot is measured by a photodetector while an interferometer measures the displacement of the knife-edge...
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4157223 |
Sliding reference interferometer
An interferometer for rapidly measuring the phase profile and intensity distribution of a high powered continuous wave laser beam. The optical wave front to be measured is re-imaged on the surface...
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4147002 |
Light valve system and greenhouse utilizing the same
A light valve system wherein particulate material is introduced into a normally light-transmitting cavity to restrict light transmission through the cavity from one side to the other. The cavity...
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4126380 |
Probe with contact indicating means
A probe including means for indicating when the probe has come into physical contact with a target. The probe has a deformable opaque tip containing a transparent window which is normally covered...
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4125314 |
Beam ratio control for holography
To form a hologram of a section of an object surface one end of each of a pair of elongated, flexible, optical fibers is illuminated with a laser beam through an optical mechanism which allows...
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4048493 |
Light-sensitive control for colored light projector
A device for producing variable colors from projected white light and quantifying the color changes resulting therefrom is provided which is useful in color-styling designs and color shade...
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4030833 |
Color filter determining apparatus
The filter insertion settings of a colored light projector are determined by projecting the colored light through different light color windows of a test probe onto a light measuring device to...
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3983317 |
Astigmatizer for laser recording and reproducing system
In a laser recording system, a high energy intensity laser beam is focused to form a circular write-spot on a rotating thermoplastic disc. This spot creates tracks of grooves and flat areas or...
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3963331 |
Camera capable of simultaneous sound recording
The present invention relates to a camera capable of simultaneous film and sound recording and into which film magazine housing a film with a sound recording belt can be loaded. The camera has a...
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3953110 |
Transparent thermal insulating system
A transparent thermal insulating system having controllable transmissivity to visible radiation comprising a first layer generally transparent to visible radiation, a second layer generally...
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3930721 |
Slidable mirror for adjustable speed projector with synchronized sound recorder
An adjustable speed projector including a continuously running shutter for repetitively interrupting the projection light path at a rate which is independent of the film frame rate, a source of...
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3890033 |
Adjustable-spring attenuator for radiated beams
A variable attenuator for use in a radiation beam path comprising at least one obturating element which element is capable of varying its physical form, whereby according to the degree of such...
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3881810 |
Large field light modulator
Apparatus for modulating extended sources of light comprises in one embodiment first and second cylindrical lens arrays disposed back-to-back and moved relative to each other.
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3860328 |
MEASURING ATTENUATOR FOR AN OPTICAL NULL SPECTROPHOTOMETER
An adjustable geometry measuring attenuator for an optical null spectrophotometer. The attenuator has two opaque plates mounted to provide a wedge shaped aperture which is movable across the...
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3848122 |
ADJUSTABLE LIGHT DIFFUSER FOR AN OPTICAL PROJECTION SYSTEM
An improved adjustable light diffuser for selectively attenuating light passed through a film gate for removing high intensity "hot spots." The diffuser includes a support frame having taut, thin...
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3843267 |
VARIABLE OPTICAL ATTENUATOR FOR A LIGHT SENSOR
An optical device in the form of a light sensor having variable optical attenuation. Attenuation is accomplished by deforming a wall or diaphragm thereby causing a variation of the aperture...
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3836233 |
ANTI-FLASH SHUTTER WITH TWO COMPARTMENTS
In a frame of the shutter an opening is provided for the passage of light, and at least three transparent plates extend across the opening to define with one another two compartments which the...
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3801781 |
DISPLACEMENT MEASURING APPARATUS
Displacement measurement apparatus comprises: A. a cell operable in response to reception of light flux to generate electrical current, B. a source of luminous flux directed toward the cell, C. a...
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3781092 |
MONITORING SYSTEM
A light circuit which is the combination of a laser light source, optical fiber light paths, or more transducers, shutters or other light modulating means and appropriate readout device means which...
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3762800 |
OPTICAL-TRANSFER BAND FOR READING EMBOSSED CHARACTERS
An improved optical-transfer band for use in a system for reading embossed characters. The optical-transfer band is fitted over the periphery of an optical disc, the edges of the band grip the...
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3714438 |
METHOD AND APPARATUS FOR PROPAGATING TRAVELING WAVE ENERGY THROUGH RESONANT MATTER
Coherent light or other coherent traveling wave energy is passed through a resonant medium containing matter normally resonant to the energy and opaque. The light pulse energy satisfies an area...
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3709584 |
LIGHT BLOCKING ARRANGEMENT
A chamber with two normally transparent walls is arranged in the path of light. Injectors mounted on the wall of the chamber inject carbon to cover the transparent walls upon receipt of...
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3675024 |
PHOTO-ELECTRIC POSITIONING DEVICE
Photo-electric positioning device for adjustment to a very accurate posit in the manufacture of micro-circuits in which the enlarged images of the three first reflecting references drawn on the...
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3622792 |
OPTICAL SWITCHING SYSTEM
A system is disclosed that provides a switching capability on a selective basis between a plurality of laser beam inputs and a plurality of output light ports. The input devices and the output...
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3594746 |
FLAME SCANNER FAULT DETECTION SYSTEM
A system for detecting a fault in the output signal of a flame scanner circuit, the system comprising ball means, normally gravity biased to a nonblocking position, periodically pneumatically...
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3549261 |
COLORIMETER APPARATUS
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3529898 |
MOUNT FOR OPTICAL ATTENUATOR
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3508813 |
ADJUSTABLE SLIT SYSTEM FOR USE IN SPECTROANALYSIS APPARATUS
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3504960 |
SAGITTAL RAY APERTURE STOP
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3484150 |
GONIO-MICROSCOPE
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3480347 |
OPTICAL DEVICE FOR PROTECTION AGAINST LASER BEAMS
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3463931 |
SHUTTER CONTROL OF ILLUMINATION OF PHOTOELECTRIC TRANSDUCER WITHIN LIGHT-TRANSMITTING BLOCK
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3456351 |
ANNULAR GUN SIGHT
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3381301 |
Inclined light bar oscillographic recorder
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3347616 |
Photometric comb minimizing photometric errors arising from non-uniformity of illumination
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3332315 |
Frustrated multiple internal reflection spectrometric system
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3288925 |
Apparatus for preparing color separation negatives
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3287828 |
Low visibility simulation screen
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3277300 |
Infrared personal radiation warning device having a cantilever spring member for supporting a shutter
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3256771 |
Spot photometer
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3256769 |
Oscillating beam switching mirror mount for use in a spectrophotometer
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3226557 |
Photosensitive scanner for detecting radiation from any azimuthal angle
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3198953 |
Automatically positioned sun mask for sighting devices
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3194964 |
Infrared detecting system
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3188932 |
Shutter opening at high speed
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3186473 |
Means for controlling the light entering a room window
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3169506 |
Operation-indicating means for pushbutton-operated mechanism
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3133485 |
Wax jet shutter
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