Specifications

UBO 110 RE (1204-1) 1/1
Subject to technical change without notice
Broadband Near-Infrared (NIR) Blocking Filter
Unaxis Optics NIR-blocking filter Calflex X™ is commonly used to shield sensitive equip-
ment such as silicon cells from harmful NIR-radiation. It combines extremely high NIR-
suppression and sharp transition slope.
Dielectric oxide coating design provides excellent transmission over the entire visible
spectrum and sharp transition to reflection in the infrared.
Benefits
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Extremely high NIR-reflection
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High visible transmission
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Sharp transition from transmission to reflection
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No color degradation
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May be used as heat protection filter
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Heat rejection independent of glass thickness
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Mechanically and chemically durable dielectric coating
Applications
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Improving signal to noise ratio of silicon detectors
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Protection of silicon photodiodes
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Improved sensitivity of light barriers
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Trimming of photodiodes
■
Signal/noise ratio improvements for digital image
sensors
■
Heat/light separation
Technical Data
Temperature resistance up to 250 °C
Spectral characteristics, AOI = 0°
T abs. 1% for λ = 780–1100 nm
T = 50% for λ = 730± 20 nm
T abs. 80% for λ = 425– 680 nm
Standard size 160 x 110 x 1.1 mm
Headquarters
Unaxis Balzers Limited
Division Optics
9496 Balzers
Liechtenstein
Tel [phone]
Fax [phone]
[e-mail]
www.optics.unaxis.com
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NIR-blocking filter
Silicon cell
Transmittance [%]
NIR-blocking filter
and sensitivity of silicon cell
Wavelength [nm]
Unaxis Optics
the future of
Balzers Thin Films
➀
➃
➂
➁
➀ Visible + IR-radiation
➁ Lens
➂ NIR-blocking filter
➃ Sensor
Schematic of filter integration to sensor package
Calflex X™