A filter. Separation of a band of monochromatic light from the composite light filter. It has a light distribution curve of symmetry, the central wavelength of maximum transmittance. Peak transmittance at half wavelength spacing, delta lambda two symmetric point light curve as the half width of pass band filter. Divided into narrow band filters and broadband filter. The spectral instrument for eliminating grating spectrum overlap.
	
	Field of application:
	
	Red laser container measuring instrument,
	
	Barcode scanner
	
	Desktop barcode scanner
	
	Laser measuring instrument
	
	Red laser pumped LD
	
	Red laser diode
	
	IR rangefinder
	
	Fingerprint identification instrument
	
	The product index:
	
	Wavelength: 940 ± 2nm
	
	Through rate: T>91%
	
	Bandwidth: 43nm
	
	Stop band 400nm-900nm
	
	1000nm-1100nm
	
	Cutoff rate: T<0.1%
	
	Product specifications:
	
	4*4*1.0mm,
	
	5*5*1.0mm,
	
	6*6*1.0mm,
	
	10*10*1.0mm
	
	Product features:
	
	Import of ultra-thin optical glass, high permeability, good smoothness, thickness tolerance, good optical properties such as smoothness
	
	Imported coating equipment ion sputtering, film with the firmness degree is high, the spectral characteristics of good uniformity, center wave strong stability etc.
	
	The product graph:
	