Blue Filter Glass QB21 QB3 QB19 BG38 BG39

Custom Optical Blue Filter Glass QB21 QB3 QB19 BG38 BG39   The QB Series is a line of blue color glass absorptive filters. Manufactured from bulk dyed optical glass, these filters are engineered to transmit a specific band of blue light while absorbing and blocking longer wavelengths (green, yellow, red, and infrared) and often ultraviolet (UV) light as well. They are valued for their durability, stability, and specific spectral control. Specification: Key Features & Characteristics:   1. Absorptive Filter Technology: The QB series operates on the principle of absorption. The glass is infused with specific metal ions and compounds during manufacturing that absorb the energy of medium and long-wavelength photons, allowing primarily shorter-wavelength blue light to pass through. 2. Bandpass Characteristics: Unlike longpass or shortpass filters, many blue color glass filters like the QB series exhibit bandpass-like properties. They transmit a specific "blue" band while blocking…