Cold Mirrors

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A "cold" mirror is designed to reflect the visible light and transmit infrared radiation (heat). As a result, 90% of the visible spectrum and a maximum of 17% of the spectrum above 800nm is reflected. The resulting light output is "cool" as up to 90% of the "heat" has been diverted. Cold mirrors are frequently applied to borosilicate glass or metal reflectors or on borosilicate flat glass as a way to mitigate "heat" output. Located close to the source.

Typical characteristics of a cold mirror include:

• Over 90% reflectance in visible light
• Minimum 83% transmission beyond 800 nanometers

Bausch and Lomb received an Academy Award for the application of dichroic technology to motion picture projection. The Thin Film Coatings Group division of Bausch and Lomb is now Applied Coatings Group.

Features

• Large diameter reflectors up to 36" or large format flat glass
• Large volume reflector throughput (>3,000 MR11s per production run) resulting in low unit cost
• Uniform distribution across large deep dish substrates
• Significant manufacturing capacity (fourteen 96" diameter PVD coaters)
• Extremely durable coatings tested to 650° C

Cold Mirrors are a very efficient way to reduce ambient heat optically, and are a very effective mirror to the visible spectrum.

Applied Coatings Group can apply these films to your reflector or can locate and source a reflector to your requirements.

Applications/Markets

• General
• Entertainment
• Medical
• Studio
• Stadium
• Projection Lighting