Provided is a daylighting device (10) that is used by being attached to a window frame (110) supporting an existing window glass (100) and that includes a first base (11) being light-transmissive, a first spacer (12) provided at an outer edge of one surface (11a) of the first base (11) and attached to the window frame (110), and a daylighting member (13) provided on a side of the one surface (11a) of the first base (11), in which the daylighting member (13) includes a second base (14) that is light-transmissive and a plurality of protrusion daylighting portions (15) that are light-transmissive and provided to be adjacent to each other on a side of one surface (14a) of the second base (14).

A glow-in-the-dark piling cap is described herein that uses glow-in-the-dark materials on a dock piling cap to make pilings to which the cap is installed visible at night without the maintenance hassles of electrical-based lighting. The cap provides typical protection for the piling from the elements as well as lighting to aid boaters and users of the structure associated with the piling to see the piling at night. The glow-in-the-dark substance can be coated on the piling cap or mixed into the plastic, resin, or other material used to make the cap. The use of glow-in-the-dark materials eliminates any need for maintenance. Thus, the glow-in-the-dark piling cap provides protection for the piling, and maintenance-free lighting to alert boaters and users of the structure associated with the piling to nighttime hazards.

A generally plano rectangular louvers are capable of being ganged in a stacked tiltable array to enhance light re-direction when titled to follow the solar elevation. Combinations of features and optical characteristic avoid optical artifacts and enhance efficiency of light utilization and manufacturing. Different louvers can be combined in alternative ways in such arrays. Light directly louvers, films, sheets and panels deploy a grooves that re-direct exterior sunlight for deeper penetration into rooms and building interiors. Absorbing structure are combined with films or panel that while reducing total interior illumination, reduce the potential for annoying glare at low solar elevations.

In one aspect, a system for collecting light directed through an architectural opening includes a plurality of optical fibers positioned within the architectural opening. A portion of light from a light source is absorbed by the plurality of optical fibers. One or more optical fibers of the plurality of optical fibers are configured to transmit the absorbed light to one or more light collection elements.

In one aspect, a system for collecting light directed through an architectural opening includes a plurality of optical fibers positioned within the architectural opening. A portion of light from a light source is absorbed by the plurality of optical fibers. One or more optical fibers of the plurality of optical fibers are configured to transmit the absorbed light to one or more light collection elements.

There is provided a light collecting device comprising a concave portion for receiving incoming light. The concave portion comprises a reflective inner surface for directing at least partly the incoming light toward a focal spot, which is defined by a geometry of the concave portion. A light guide holder is held in place at the focal spot and holds a light-receiving end of a light guide, inside its annular shape. It holds the light-receiving end toward the concave portion to substantially capture the incoming light directed toward the focal spot. The concave portion can be a dish or a lamp reflector. The light guide holder can be held in place by arms having pads that rest on or hold the concave portion.

A daylight illumination system for integration into a building or larger vehicle comprises a translucent facade element (800) containing a glass sheet and a light redirection element (302 or 708), and a light transport channel (801) for guiding light about horizontally into an interior of the building, the light transport channel comprising one opening attached to the interior side of said facade element and at least one opening towards the interior of the building, characterised in that the light redirection element (302 or 708) is formed as a structured polymer film or sheet attached to a glass sheet of the facade element (800) and is configured for changing the direction of incident light into the about horizontal light transport channel.

A daylighting panel for integration into a building or larger vehicle comprises a translucent facade element (800) containing a glass sheet and a light transport channel (801) for guiding light about horizontally into an interior of the building, the light transport channel comprising one opening attached to the interior side of said facade element and at least one opening towards the interior of the building equipped with a luminaire (807), characterised in that the inner walls including the rear end are covered by a reflecting layer (808).

In one aspect, a system for collecting light directed through an architectural opening includes a plurality of optical fibers positioned within the architectural opening. A portion of light from a light source is absorbed by the plurality of optical fibers. One or more optical fibers of the plurality of optical fibers are configured to transmit the absorbed light to one or more light collection elements.

The system captures and concentrates sunlight for transmission to interior spaces or to a PV system. A solar collector uses arrayed refractive lenses, opposing concave focusing mirrors, and a movable coupling sheet forming part of a lightguide. The lenses and mirrors have an asymmetric shape, such as having aspect ratios of 3:4 or 1:2, so as to have an asymmetric aperture to better receive light at the different ranges of angles of the sun's rays over the course of a year. The long axis of the apertures is generally oriented in an East-West. The movable sheet contains small angled mirrors, and the sheet is translated to position the angled mirrors at the focal points of the sunlight for maximum deflection of the sunlight to an output of the collection system. A position sensor provides feedback regarding the position of the angled mirrors relative to the focal points.