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US 2002/0159154 A1Published application
Optical components for daylighting and other purposes
AssigneeRedbus Serraglaze Ltd.
InventorPeter James Milner
Life of this patent
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AssigneeRedbus Serraglaze Ltd.
InventorPeter James Milner
Estimating the term…
An optical component (11) comprises two transparent flat bodies (12, 13) each having grooves (16) or other surface features on one of its faces (15) which interpenetrate when the two bodies (12, 13) are placed face-to face. The shapes of the grooves (16) or other surfaces features are such that they touch in some places (20, 22, 23) and are spaced from one another in others (18, 19) to form voids (24) within the composite body (11) so formed. These cavities (24) assist in determining total internal reflection of incident light at certain angles. Composites bodies formed from two face-to face optical components may be used as daylighting screens both to direct light towards an object such as the interior of a building (through an opening) or to screen light from it by diverting it away therefrom.
A building having external daylight boosters outside an air-conditioned zone.
An optical component of the type comprising two optically transparent bodies each having two major faces one of which is interrupted by a plurality of cavities separated by cavity separators, positioned in face-to face relation with the cavities and cavity separators of the two bodies interpenetrating one another, with an air gap between them in which the cavities and cavity separators are so shaped as to define in the assembled component substantially catadioptric reflectors at least for light incident over a certain range of incident angles.
Dependencies are inferred from the claim text.