CTB-001 Cooling Color-Correction Filter
CTB-001 is a cooling color-correction filter shown in the customer sample book. Evaluate the correction with the spectrum of your actual light source.
- Measured wavelength range: 380-780 nm
- Peak transmission: ≈ 91.869% at 401 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.
CTB-001 Cooling Color-Correction Filter
CTB-001 is a cooling color-correction filter shown in the customer sample book. Evaluate the correction with the spectrum of your actual light source.
- Measured wavelength range: 380-780 nm
- Peak transmission: ≈ 91.869% at 401 nm
- Custom options: Wavelength response, dimensions and operating conditions
Values shown are sample measurements. Final specifications are agreed for your order.

CTB-001 Reference Optical Response
CTB-001 is a cooling color-correction filter referenced to the customer sample book. Evaluate the correction with the spectrum of your actual light source.
Optical performance
- Measured wavelength range: 380-780 nm. Performance outside this interval is not established.
- Peak transmission: Approximately 91.869% at 401 nm. This is a sample measurement, not an order tolerance.
- Selection note: The customer sample-book curve is the reference for this listing. Confirm that your sample-book edition and order refer to the same design.
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 CTB-001
Which spectrum represents CTB-001 in the customer sample book?
This listing follows the customer sample-book reference over 380-780 nm. Its measured peak is 91.869% at 401 nm. If your factory sheet looks different, send us the edition or label rather than assuming the curves describe the same version.
Will CTB-001 give the same cooling effect on every lamp?
The sample peak of 91.869% at 401 nm is only one point on the curve. Compare the complete sample-book spectrum with your actual lamp: the balance of blue, green and red light determines the correction. Share your source spectrum and target color balance with us.
Discuss this filter with KUPO - include the product reference, source wavelength, working angle and required dimensions.