A 650nm narrow-bandpass filter is an optical component that allows light within a specific wavelength range around 650nm to pass through while blocking light of other wavelengths.

Optical Specifications (Customizable):

• Center Wavelength: Typically 650nm, with a tolerance generally within ±2nm, and transmittance >92%

• Bandwidth: Full Width at Half Maximum (FWHM) can be customized according to requirements, common options include 10nm, 30nm, etc. For example, when a product has a bandwidth of 10nm, its transmission range may be 640-660nm.

• Transmittance: Products with higher transmittance can be further customized based on customer needs.

• Blocking Depth: Effectively blocks light of other wavelengths outside the passband, typically achieving a blocking depth of OD3-OD4 or higher to reduce stray light interference.

Features of the 650nm Narrow-Bandpass Filter:

Monolithic and Cemented Types

Hard Coating, Long Service Life

Wavelength Positioning

Ion Beam Sputtering, Low Temperature Drift

Transmittance >92%, High Blocking Depth