material:BK7,Fused Silica

 

 

Specifications: Material: BK7 or Fused Silica

Diameter: Φ25.4mm+0/-0.2mmThickness: 3.0mm±0.2mmClear Aperture: >90%FWHM: ±5 nmPeak Transmission: >80%Block: 0.01% (±20nm from the peak) Standard wavelength: 355, 405, 488, 514, 532, 633, 780, 850, 1064    

Specifications: Material: Quartz Crysta

Diameter Tolerance: +0/-0.2mmClear Aperture: >90%Parallelism: <3 arc secThickness Tolerance: ±0.05mmSurface Quality: 20-10Flatness: λ/4@ 633nmThickness: T=0.5mm Part No: BFQ5115-2T 

Part No.	Diameter mm
BFQ0712	12.7
BFQ0715	15.0
BFQ0720	20.0
BFQ0725	25.4

Glass Type: Cut-off Glass, selective Absorption Glass, Neutral Filter Glass   

Cut-off Glass		Selective Absorption Glass		Neutral Filter Glass
Name	Wavelength nm	Name	Wavelength nm	Name	Absorption
Ultraviolet Glass	220-380	Ultraviolet Glass	300-360	Grey Colored Glass	T=1%-70%
Golden Glass	400-510	Violet Glass	360-400
Orange Glass	535-580	Blue Glass	420-600
Red Glass	600-720	Green Glass	510-580
Infrared Glass	760-930	Golden Glass	560-900
		Orange Glass	580-900
		Red Glass	610-1200
		Infrared Glass	800-1500
		Heat-absorbing Glass	400-700
		Sky-light Glass	400-2000

 Specifications: Diameter: from Φ2mm up to Φ350mmThickness tolerance: +/-0.2mmClear Aperture: >90%Surface Quality: 60-20Flatness: Lambda/2 per inch