CM-740 Cold Mirror Filter
CM-740 is a near-infrared transmitting cold-mirror measured design. This listing follows the original BH-A07(COLD MIRROR740) measured.
- Measured wavelength range: 300-1200 nm
- Peak transmission: ≈ 97.915% at 884 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.
CM-740 Cold Mirror Filter
CM-740 is a near-infrared transmitting cold-mirror measured design. This listing follows the original BH-A07(COLD MIRROR740) measured.
- Measured wavelength range: 300-1200 nm
- Peak transmission: ≈ 97.915% at 884 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.

CM-740 Reference Optical Response
CM-740 is a near-infrared transmitting cold-mirror reference design. This listing follows the original BH-A07(COLD MIRROR740) reference.
Optical performance
- Measured wavelength range: 300-1200 nm. Performance outside this interval is not established.
- Peak transmission: Approximately 97.915% at 884 nm. This is a sample measurement, not an order tolerance.
- Selection note: The measured absolute 50% transmission edge is approximately 739.07 nm. Confirm the supplied version; the A+B-labelled measurement is a separate reference.
These values describe a measured measured sample. Custom versions and production orders have their own agreed specifications.
Choosing this filter
Compare the full source spectrum and desired transmitted region. Tell us the working angle, dimensions and required rejection.
Custom options
Discuss the wavelength response, substrate, dimensions and operating conditions with KUPO.
Transmission spectrum
Questions about CM-740
What does the measured peak of CM-740 represent?
The measured peak is approximately 97.915% at 884 nm. That is the highest measured transmission point, not automatically a defined centre wavelength or a passband specification. Use the surrounding curve to judge the signal range.
Which CM-740 version does this page describe?
It uses the original BH-A07(COLD MIRROR740) reference. The separate COLD MIRROR740-A+B factory file is an alternative version, not an automatic replacement. Include your sample label or previous order reference when asking us to match an existing filter.
Discuss this filter with KUPO - include the product reference, source wavelength, working angle and required dimensions.