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7339714 |
Variable blazed grating based signal processing
A light processing system includes an array of optical signal processing devices. The array of processing devices are operable to receive at least some of a first signal part and to modulate the...
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7300168 |
System for creating spectral displays
A highly adaptable system for creating colorful spectral displays or for achieving a prismatic effect using visible light. The invention includes a fixed-angle or monolithic prismatic element...
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7207327 |
Feedback control method for a heliostat
An instrument for a solar energy system including a receiver and a heliostat to reflect solar energy on to the receiver. The instrument includes a first element adapted to form an image of the sun,...
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6984050 |
Heliostat for sunlight concentration system and method of controlling the same
A heliostat 5 for use in a sunlight concentration system for utilizing sunlight as energy according to this invention has a plurality of small concave mirror elements 8 and reflects and focuses...
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6971747 |
Image display device having a compensating prism group
A color management system for use with projection displays includes, for example, a separating polarizing beamsplitter, a compensating prism group, an image assimilator, and a combining polarizing...
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6827445 |
Sun-tracking daylighting apparatus
A solar lighting apparatus of the sun tracking type for guiding sunlight into a building by using light reflecting means ( 30 ), the apparatus comprising the light reflecting means ( 30 ) for...
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6493145 |
Solar lighting apparatus
A solar lighting apparatus includes a transparent dome. The transparent dome is provided, at its ceiling center, with a control box accommodating a stepping motor, a controller for controlling the...
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5934271 |
Large aperture solar collectors with improved stability
A solar collection antenna has a large aperture reflective dish which is mounted on a dish support fame. When the dish is pointed at the sun, it reflects received solar radiation into a zone of...
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5758938 |
Solar concentrator elevational drive mechanism
A mechanism for elevationally driving a solar concentrator pivotally mounted on a pedestal between a zenith facing position, a horizon facing position, a downward facing position, and any...
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5707458 |
Light converging solar module
In order to generate sufficient electricity in a small light converging solar module, a power generation solar cell is provided with four movement solar cells, situated around it. Below the...
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5632823 |
Solar tracking system
The solar tracking system maintains a solar collector with its responsive surface normal to the sun rays. It includes a shaft supported for rotation about an axis parallel to the north-south axis...
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5467257 |
Solar panel unit and solar lamp including same
A solar panel unit includes a solar panel (10) supported for rotation about a frame (13) and driven around the frame (13) by an electric motor (14). Radiation sensors (22) and (23) have their...
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5253637 |
Hyperfocal tracking solar thermal collector
A solar thermal collector incorporates an extended reflector surface constructed to concentrate radiation from a radiation source along a focal line. The reflector surface is oriented in a...
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4995377 |
Dual axis solar collector assembly
A solar collector involves an elongate main boom having a longitudinal axis and a solar collector frame. Brackets are provided for pivotally mounting the solar collector frame to the main boom for...
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4930493 |
Multi-lever rim-drive heliostat
Disclosed is a heliostat assembly having a circular, ring mounted reflector which is driven and supported by an arrangement of elongated levers. A pair of levers are spaced apart and pivotally...
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4887589 |
Solar energy tracking structure incorporating wind spoilers
A solar energy transfer spoiler assembly, comprises of a base for supporting the remaining elements of the assembly, an azimuth and elevation drive mechanism, a moving structure frame, a plurality...
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4870949 |
Wind resistant two axis tracker for energy or radiation concertrators
A wind resistant, two axis tracker is used to direct a solar reflector, heliostat, or dish antenna. An elevation drive ring is supported in a vertical orientation by dolly wheels rotatably attached...
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4836672 |
Covert optical system for probing and inhibiting remote targets
An optical system makes use of solar illumination as a light source to achieve covert operation.
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4832002 |
Unified heliostat array
A unified heliostat array for reflecting the rays of the sun upon a central collector. The heliostats are driven by a single pair of drive motors that are coupled to a sun tracker and to the...
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4799763 |
Paraxial stereoscopic projection system
Disclosed is a stereoscopic projection system for viewing from an eye station a stereoscopic image composed of a 1 x magnification of an image source pair. Said system comprises a pair of image...
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4794909 |
Solar tracking control system
A solar tracking control system for generally controlling the position of a pivotable solar panel connected to a motor by selectively energizing and de-energizing the motor. A signal programmer...
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4791533 |
Natural lighting apparatus
A natural lighting apparatus includes a mirror for reflecting light, and a supporting mechanism for supporting the mirror for rotation about both a first axis and a second axis perpendicular to the...
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4742813 |
Sunshield device
A signal generator equipped with a shading device and two light sensors is arranged on the upper side of a slat equipped with retro-reflective prisms and rotatable about a longitudinal axis....
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4712876 |
Driving ferroelectric liquid crystal printers via short circuiting
In a driving method of an optical switch element for controlling a quantity of transmission light between opposed electrodes by interposing a transparent, high dielectric material between the...
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4658805 |
Thermo-hydraulic power supply
A radiant energy utilization device including an aiming detector sensing the relative angle of radiation received and outputting signals in accordance therewith to control aiming of the device or...
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4628142 |
Solar tracking mechanisms
A solar self-tracking mechanism for continuously tracking the movement of the sun with time comprises a solar radiant energy receiver secured to a base set on the ground and rotatable about a...
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4625709 |
Tracking solar collector installation
A plate provided with solar collectors is carried by a mast, which rests on a top member which defines the top of a liquid-filled chamber, which has a variable volume. When an outlet nozzle of the...
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4585318 |
Tracking device
This invention concerns a tracking device which enables the positioning of an apparatus to trace a curved path. For example, they are suitable for solar devices such as photovoltaic generators,...
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4583520 |
Balanced solar concentrator system
This solar concentrator system is configured such that the base pedestal attachment point is located on the beam connecting the curved solar reflector and the heat energy receiver power conversion...
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4564275 |
Automatic heliostat track alignment method
A method of automatically aligning heliostats by comparing the actual sunbeam centroid position on a target to a command reference position to determine the error in the sunbeam centroid location....
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4519381 |
Solar heating apparatus and method
A solar heating apparatus is disclosed along with a method of making a solar heating apparatus. The apparatus has a frame with a solar collector movably mounted thereto. A solar tracking mechanism...
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4484565 |
Device for sensing moving light source
A device for chasing a moving light source includes a plurality of photosensors arranged in elaborated positions for accurate operation. A top plate is formed with a calibrated cruciform opening to...
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4466423 |
Rim-drive cable-aligned heliostat collector system
Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the...
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4459972 |
Heliostat assembly
An improved heliostat comprises a focusing reflector having a toroidal configuration. Mounting means for the reflector comprises means defining a first axis parallel to the earth's polar axis, and...
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4458670 |
Orientation mount for a solar heating module
The present invention relates to an elevation orientation mount for a parabolic mirror reflector of a solar heating module. The altazimuthal orientation mount according to the invention is adapted...
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4440150 |
Heliostat control
An improvement in a system and method of controlling heliostat in which the heliostat is operable in azimuth and elevation by respective stepper motors and including the respective steps or means...
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4439767 |
Lightweight optical jammer system
A lightweight (i.e., less than 50 kg) optical jammer system for use with a satellite in earth orbit. The jammer system is mounted on the satellite and produces an obfuscating programmable signature...
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4439020 |
Sunrays focusing apparatus
A sunrays focusing apparatus for obtaining highly condensed solar energy. The apparatus includes a first trough-shaped parabolic reflector mounted for rotation about both vertical and horizontal...
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4429178 |
Solar tracking apparatus utilizing photovoltaic flat panels and method
A technique for converting solar energy directly to electrical energy is disclosed herein and utilizes a plurality of photovoltaic-like flat panels having solar collecting front sides. These panels...
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4425904 |
Tracking system for solar collectors
A tracking system is provided for pivotally mounted spaced-apart solar collectors. A pair of cables is connected to spaced-apart portions of each collector, and a driver displaces the cables,...
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4424802 |
Pneumatic drive for solar concentrators
A method and apparatus for driving an array or large field of solar concentrators (10) by means of pneumatic pulses of compressed air such that it tracks the movement of the sun (14) across the sky...
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4424801 |
Solar direction sensor
The solar direction sensor disclosed a solar direction sensor which is mounted on an apparatus for collecting solar energy by precisely following the movement of the sun. The solar direction sensor...
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4419981 |
Sun tracking apparatus
A sun tracking apparatus comprises a first pair of photosensors arranged at symmetrically opposed positions on a first horizontal axis rotatable around a third vertical axis, and a second pair of...
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4402582 |
Parasitic driven heliostat mirror declinator
An automatic parasitically driven declinator for changing the tilt angle of the mirror of a heliostat to provide solar declination tracking by the heliostat. The declinator includes an axial gear...
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4401103 |
Solar energy conversion apparatus
Apparatus for converting solar energy to useful energy principally for home use. The apparatus provides a complete system for receiving solar energy over a large area, e.g. 1,000 square feet;...
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4396006 |
Solar powered, solar aiming device
A solar powered, solar aiming device pivotally mounted on a base 40 uses a pair of separate solar sensor panels 11 and 12 that are insulated from each other and oriented at an angle to each other....
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4387702 |
Solar tracking system
An optical/mechanical solar tracking system having a lens for focusing the sun's rays for use by an element which changes shape in response to heat. The change of shape of the element is used to...
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4383520 |
Apparatus for the independent rotation of an aggregate about two axes which are positioned perpendicularly to one another
Apparatus for rotation of an aggregate independently about two mutually perpendicular axes, in particular for tracking solar collectors. A stationary first drive mechanism includes a housing, an...
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4382434 |
Prismatic tracking insolation collector
A tracking insolation collector characterized by elongated prisms of acute apex angle maintained with an objective face disposed normal to the sun rays and through which dispersed light is...
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4377154 |
Prismatic tracking insolation
A tracking insolation collector characterized by elongated prisms of acute apex angle maintained with an objective face disposed normal to the sun rays and through which dispersed light is...
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