BP-490nm Bandpass Filter
The bandpass filter is a kind of filter. It is a kind of filter that transmits light in a certain band and shields other light. The photosensitive range can include ultraviolet, visible, and near-infrared wavelengths. According to the sensitivity range and lighting conditions of ordinary industrial cameras, commonly used machine vision filters generally include some wavelengths of ultraviolet (UV), visible light, and near-infrared (NIR). According to the wavelength classification, it can be divided into the ultraviolet filter, visible filter, and near-infrared filter.
The bandpass color filters of our company is made of multi-layer dura ion-assisted deposition nanomaterials by high vacuum evaporation. The film has good compactness and high imaging definition. Imported ultra-thin optical glass has a high transmittance, good finish, small thickness tolerance, good flatness, and other optical characteristics. Using the ion sputtering bonding film process of imported film equipment, it has the characteristics of high hardness, good spectral uniformity, and strong center wave stability.
The Advantages of BP-490nm Bandpass Filter
1. High transmittance, small attenuation rate of the optical signal, effectively improving working distance and light intensity
2. High cut-off depth, effectively avoiding stray light interference:
3. High wavelength accuracy
