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Products / Cold Mirror Filters / CM-740
CM-740 spectral response — original published curveOpen full-size image ↗
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Cold Mirror Filters

CM-740Cold Mirrors

CM-740 is a near-infrared transmitting cold-mirror reference design. This listing follows the original BH-A07(COLD MIRROR740) reference.

  • Product family: Cold Mirrors
  • Measured wavelength range: 300–1200 nm
  • Published response: Transmittance

Measured interval is not the passband. Values shown are sample measurements. Final specifications are agreed for your order.

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 · CM-740

Read the numbers.
Understand the response.

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.

OPERATING CONDITIONS

Match the complete optical system.

Match the full source band.

Compare the source emission spectrum with the filter curve. Include the source bandwidth, rather than relying on the nominal wavelength alone.

Check unwanted response.

Compare the complete measured response with your detector sensitivity. Confirm any additional blocking needed for your system.

Define the incidence conditions.

Specify the working angle and whether the beam is collimated or converging. Confirm the required response under those conditions.

Confirm the physical fit.

Provide the available mounting space, required shape, dimensions and thickness. Physical specifications will be confirmed for your assembly.

APPLICATIONS

Where this profile can help.

Medical & Microscopy

Optical components for illumination and instrument development.

Security & Surveillance

Visible and infrared optical paths for monitoring systems.

Stage, Studio & Projection

Color, patterns and beam control for performance and projection.

Research & Instrumentation

Spectral selection, beam paths and measurement systems.

Application examples are starting points for evaluation; suitability depends on the complete optical system.

CUSTOM & ENQUIRY

Tell us what
your design needs.

Start with CM-740 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.

CM-740 spectrum data CSV ↓KUPO Optics catalog Download ↗Explore Cold Mirror Filters →