Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 515
:; t be general appearance of the unit. Surrounding the filament is a cup-like diffusing glass reflector; underneath is another conical white reflecting surface.having at its top a ventilating aperture.The filament is thu- completely screenedfrom view except over a small angleslightly below the… … Pig 4 Component parts oi newMazda street-lighting reflector -how n in Fig uniform street illumination. A corn-parison of tin-, curve with that of thebare Lamp shows very clearly how greatly the natural distribution Oi light froma SOUrCe can he altered hy the u.-o of appropriate red.-.tor-. The…
Lighting
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