Band Pass Filter

A high-transmittance bandpass filter that selectively allows light of specific wavelengths to pass through

This filter features an optical thin film coating that selectively transmits or reflects light at specific wavelengths.
It is used as a wavelength-selective transmission filter in measurement instruments, such as automotive LiDAR systems and pulse oximeters.

Applications

  • LiDAR
  • Facial recognition system
  • Inspection and analytical equipment
photo of autonomous delivery robot with LiDAR
photo of facial recognition system
photo of pulse oximeter

Features

  • Low angle dependency
    Compared with a typical bandpass filter, the shift in the center wavelength can be minimized even with a light with tilted angle.
  • High transmission, narrow bandwidth, and high blocking performance
    This filter effectively eliminates unwanted wavelengths, contributing to high-precision measurements.
  • Customizable transmission wavelength bands
    Specific wavelengths can be transmitted or blocked according to the requirements of your application.

Specifications

Examples of Spectral Characteristics

  • This is just one example; it can be customized and designed to meet the specific needs of your application.
figure of transmittance curve of the near-infrared bandpass filter
Example of transmittance of near-infrared bandpass filters .Transmittance at 30° and 0° angle of incidence.
figure of transmittance curve of a bandpass filter with two bands
Example of dual band pass filter transmittance

Usage Examples

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