Abstract: A stack of light-deflecting elements are installed in a window. Each deflecting element has a solar ray inlet, a curved middle section and an end comprising a ray outlet into the room. Each element is rectilinear at the outlet end so that rays are dispersed and emerge from the light-deflecting elements in prisms of rays, the bottom edge of which is horizontal. The solar rays entering the light-deflecting elements are subjected to multiple total internal reflections at a different angle. The angle of the normal line of the deflector elements to the horizontal is selected so that the largest possible amount of sunlight can be captured and conveyed into the room to illuminate the room with a uniform, diffuse distribution.

Abstract: Energy control system for a window comprises fenestration blinds, horizontal or vertical, disposed at the window and adjustable in angle to control solar radiation entering the window. First and second photovoltaic sensors are disposed proximate respective exterior and interior sides of the fenestration blinds for providing a signal representative of incident solar radiation at the respective exterior and interior sides. An electrical motor is can be disposed proximate the window and is operably connected to the fenestration blinds in a manner to controll the angle thereof. A microprocessor control device is provided for providing control signals to the motor to adjust the angle of the fenestration blinds.

Abstract: The present invention is a sunlight reducing cover for intake and exhaust louvers on a food crop storage building. The invention also decreases the likelihood of ice formation or dirt fouling of the building louvers. The invention interfits within a frame, which is installed over the louvers, preferably inside the building. The invention is generally comprised of a free-flowing, air permeable, plurality of passageways. Each passageway having a first and a second end, with the passageways being of offset configuration wherein the first end is offset from the second end to an extent that a linear path does not exist between the two ends. The preferred embodiment of the present invention is generally comprised of a plurality of panels of generally wave form. The invention is manufactured by attaching the top surface of one panel to the bottom surface of another panel in such a fashion that the period of the wave form of each panel is 180.degree.

Abstract: A method and apparatus for projecting multiple patches of full spectrum, rainbow colors to multiple, widely distributed locations is provided. The invention enables the display of such patches on a surface area toward which a source of light is directed, for example the walls and ceiling of a room from sunlight entering the room through a window in the room. The method and apparatus provide first for the refraction of the light from the source of light, and secondly for both the refraction and the reflection of the initially refracted light. The initially refracted light is projected onto a surface of the room as main multiple spectral patches; and the refracted-refracted light, and the reflected-refracted light are projected onto other surfaces of the room laterally of the main patches as additional spectral patches, creating in all, multiple spectral displays of full spectrum, rainbow colors nearly surrounding a viewer and changing in position and shapes with the movement of the sun or other light source.

Abstract: A lenticular lens provided on the viewer side of a transmission type screen is composed of at least two layers, that is, a surface layer and a base layer at least one of which contains a light dispersing material, and a visible light absorbing material is mingled in at least one of these two layers, or in the light dispersing material, thereby enhancing the image contrast of the transmission type screen.

Abstract: Anti-glare fitment with a plurality of elongate light-deflecting slats which are arranged above one another, at a distance from each other, are reflective on their upper surface and preferably have a cross-section which is upwardly curved in a concave manner, whereby the light-deflecting slats are, at least within an area, perforated.

Abstract: A comprehensive method, and apparatus implementing the method, for providing beam daylighting to a room by one or more reflectors positioned in a window wall of the room. The method involves a mathematical analysis of solar and reflected beam vectors and in determining the optimum orientation of a vector normal to the reflecting surface to provide the best combination of depth of penetration of light into the room while keeping glare to an acceptable level. Arrays of both stationary and moveable reflectors implementing the method are disclosed. In the case of stationary arrays, preferably two are provided in each installation which respectively optimize performance of reflections during periods when the solar beam vector is on the easterly ana westerly sides of a line perpendicular to the window wall.

Abstract: An energy-efficient barrier uses thin slats, on one side of which are formed a number of reflective surfaces. The reflective surfaces are oriented at an angle, with respect to the face of the slat, to maximize reflection of the rays of the sun. The parallel reflective surfaces are formed as a series of ridges along the length of a slat and as the treads of a series of stairsteps formed along the length of a slat. The slats can be formed of extruded material with the reflective surfaces formed of reflective material which is polated on V-grooves formed in the slats. The slats are oriented in relation to the direct rays of the sun to pass the direct rays of the winter sun between the wider faces of the slats. The reflective surfaces on each slat are also aligned to reflect the direct rays of the summer sun.

Abstract: A transmittance-adjustable window (20) that includes first and second polarizer sheets (34B)(46B) and an actuator (44) for relative movement between them. The first sheet (34B) has a translation direction Y and is formed from an alternating series of abutting, identically-shaped linear polarizer segments A and B distributed along translation direction Y. Each segment A has a first polarizing direction and each segment B has a second polarizing direction orthogonal to the first. The second sheet (46B) is substantially identical to the first sheet (34B) and positioned in an adjacent, substantially parallel plane. The actuator (44) moves one of the sheets with respect to the other between an OPEN alignment position and an OPAQUE alignment position. In the OPEN position, each segment of the first sheet superimposes a corresponding identical segment of the second sheet which allows light to pass.

Abstract: A passive solar ray lighting fixture supported above a roof of a building and extending coaxially within a building light well, a solar ray illuminator in combination with a coaxially arranged air conditioning duct for use in combination with an air conditioning system.