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770nm CWL, 10nm FWHM, 25mm Mounted Diameter

Stock #67-845
₹12,180.00
×
Qty 1-9
₹12,180.00
Qty 10+
₹10,962.00
Volume Pricing
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Diameter (mm):
25.00 +0.00/-0.25
Center Wavelength CWL (nm):
770.00 +3.0/-0.0
Full Width-Half Max FWHM (nm):
10.00 ±2
Minimum Transmission (%):
>50
Optical Density OD (Average):
≥4.0
Coating:
Traditional Coated
Typical Applications:
General Filtering
Blocking Wavelength Range (nm):
200 - Far IR
Clear Aperture CA (mm):
21.0
Surface Quality:
80-50
Angle of Incidence (°):
0
Construction:
Mounted in Black Anodized Ring
Mount Thickness (mm):
5.9 ±0.1
Type:
Bandpass Filter

Regulatory Compliance

RoHS 2015:
Reach 219:

Product Family Description

  • Available in UV, Visible, and IR Center Wavelengths
  • 10 – 80nm Bandwidths Available
  • Ideal for Biomedical Applications and Instrumentation Integration
  • 193-399nm, 400-699nm, and 700-1650nm CWL Options Available

Traditional Coated Bandpass Interference Filters are used to selectively transmit a narrow range of wavelengths while blocking all others, and are ideal for a range of biomedical and quantitative chemical applications.

Bandpass interference filters are widely used in instrumentation for a variety of applications including clinical chemistry, environmental testing, colorimetry, elemental and laser line separation, flame photometry, fluorescence and immunoassays. In addition, bandpass interference filters are used to select discrete spectral lines from arc or gas discharge lamps, and to isolate a particular line from Ar, Kr, Nd:YAG, and other lasers. They are often used in conjunction with laser diode modules and LEDs.

Traditional Coated Filters

Traditional coated filters are fabricated in three sections, one of which determines the center wavelength (CWL), bandwidth (FWHM), and the shape of the transmittance curve while the other two control the blocking range of the filter. The bandpass section of Traditional Coated Bandpass Interference Filters is made by repetitive vacuum deposition of thin layers of partially reflecting dielectric compounds on a glass substrate. Rejection of wavelengths resulting from destructive interference is limited to within 15% of the central wavelength, therefore, additional glass or metallic blockers must be added to reduce out-of-band transmittance. Metallic blockers, such as layers of silver, reflect and absorb radiation outside of the filter passband and negate higher order passbands from X-ray to the long-wave infrared (LWIR). The blocking capabilities of metallic blockers are augmented by the addition of color transmitting glass and custom dyes that absorb UV or long wavelength radiation. After thin film deposition is complete, the three sections are scribed, laminated, cut, and mounted.

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