Viewfinder is one reflecting, light-assembling component that could be applied in lamp-house system, such as optical light-assembling system in cinematograph, steamship, train, airport, cargo filed, lamps and lanterns in court and stage, illumination, decorative lamps and lanterns, projection machine, optical fiber, photography, medical and biological instrumentation.
Cold mirrors could effectively reflect the visible light and permeate infrared ray under vacuum and high temperature circumstances.
Classifications:
- according to film plating material of inner surface: medium cold mirror, aluminum film mirror, gold film mirror
- according to purpose: violet mirror, visible light mirror, infrared ray mirror
- according to focus of different shapes: prick axis elliptical ball cold mirror, elliptical ball cold mirror, parabolic cold mirror, spherical surface cold mirror
 Parameter:
Flundus material:high volume boron glass
Average reflectivity of visible light: >93%
Average reflectivity of infrared ray: >75%
Color temperature: 5500 +/_ 500K
Effective lumen content: > 4LM / W
temperature range: -40 ゛ +420≧
Average longevity: 300 ゛ 1000 hours
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Typical curves: |
Luminescent film
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| prick axis elliptical ball cold mirror |
elliptical ball cold mirror |
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