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IR Cut-off Filters

BH-A28IR Cut-off Filter

BH-A28 transmits visible light across the measured 420–615 nm region and suppresses near-infrared transmission over 700–1100 nm. Use the full curve to assess the source and detector combination, including wavelengths beyond the specified blocking bands.

  • Product family: IR Cut-off Filters
  • Measured wavelength range: 300–1200 nm
  • Measured response: Transmittance (T%)

The curve represents one measured sample. Values outside the stated intervals and final order specifications require confirmation.

MEASURED OPTICAL RESPONSE

Read the light.

Original published sample data.

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Nearest measured point shown; no interpolation or extrapolation. Original sample values are preserved, including values outside 0–100%. Samples are selection references, not production acceptance limits.

OPTICAL PERFORMANCE · BH-A28

Read the numbers.
Understand the response.

Visible transmission, 420–615 nm

96.001% average T. Mean of the measured sample points across this interval.

Near-IR blocking, 700–1000 nm

1.176% maximum T. Highest measured transmission in this interval.

Extended IR blocking, 1000–1100 nm

1.427% maximum T. Highest measured transmission in this interval.

Measured 50% edge

Approximately 644 nm. Derived from the sample curve.

APPLICATIONS

Where this profile can help.

Visible-light cameras

Evaluate where high visible transmission is needed while suppressing near-infrared response through the measured 700–1100 nm interval.

Industrial inspection

Compare the optical source, sensor sensitivity and working angle with the full measured response before specifying the assembly.

CUSTOM & ENQUIRY

Tell us what
your design needs.

Start with BH-A28 and discuss the spectral response, physical format and operating conditions.

Include in your enquiry

  • Target wavelengths and required transmission or blocking
  • Light source and detector model, or their spectra
  • Working angle, beam geometry and operating environment
  • Required shape, dimensions, thickness and mounting constraints
  • Sample quantity, expected order quantity and project timing

TECHNICAL RESOURCES

Take the data
into your design.

BH-A28 spectrum data CSV ↓Explore IR Cut-off Filters →