Optical Windows Sale!

Circular Optical Windows from our Excess Inventory are offered at substantial savings. Most of our excess Inventory Circular Optical Windows are available as both Laser Quality and Analytical Quality polish designated as LQ (Laser Quality) and AQ (Analytical Quality) per the below specifications.

Circular Optical Windows from our Excess Inventory are available in UV Grade Fused Silica (FS) & BK7 Glass materials*. Circular Optical Windows are flat polished round optical windows typically used to isolate environments while allowing light to pass relatively unimpeded. Optical Windows are generally used for view ports or sealing and or protecting other components within an optical assembly, instrument or laser.

NOTE: Quantities and availability subject to change. Please check back often.

*Also see our standard Circular Optical Windows in UV Fused Silica & BK7 Glass Materials

For more information about Optical Windows, refer to our Optics Tutorial page.

OPTICAL WINDOW SPECIFICATIONS

Material : BK7 Glass & UV Grade Fused Silica (FS)
Diameter (Dia = Ø) Tolerance: ±0.25mm
Thickness Tolerance: ±0.25mm
Surface Figure*: LQ = ~L/8 - ~L/10 @ 633 nm nominal
                               AQ = ~3-5 waves @ 633 nm nominal
Surface Finish: LQ = ~20-10 to ~40-20 both surfaces
                             AQ = 60-40 both surfaces
Clear aperture: central 85%
Parallelism: LQ = < 5 arc minutes
AQ = < 15 arc minutes
Chamfer: ~ 0.30mm @45 deg.
(* Can vary with Thickness)

(LQ = Laser Quality / AQ = Analytical Quality)

All dimensions in mm

DIAMETER Ø	THICK (T)	QUALITY	MATERIAL	PRODUCT #	PRICE	ORDER
25.4mm	6.1mm	Laser Quality Optical Window	BK7	LQB2561OW	$25.00	LQB2561OW
25.4mm	9.21mm	Laser Quality Optical Window	UVFS	LQF2592OW	$35.00	LQF2592OW
25.4mm	9.28mm	Laser Quality Optical Window	UVFS	LQF2593OW	$35.00	LQF2593OW
25.4mm	9.24-9.25mm	Laser Quality Optical Window	BK7	LQB2592OW	$25.00	LQB2592OW
25.4mm	9.25mm	Analytical Quality Optical Window	BK7	AQB2592OW	$25.00	AQB2592OW
25.4mm	9.27-9.3mm	Laser Quality Optical Window	BK7	LQB2593OW	$25.00	LQB2593OW
38.1mm	1.5mm	Laser Quality Optical Window	BK7	LQB3815OW	$35.00	LQB3815OW
38.1mm	6.15mm	Laser Quality Optical Window	BK7	LQB3861OW	$35.00	LQB3861OW
38.1mm	9.25mm	Laser Quality Optical Window	UVFS	LQF3892OW	$45.00	LQF3892OW
50.8mm	1.5mm	Laser Quality Optical Window	BK7	LQB5015OW	$40.00	LQB5015OW
50.8mm	6.12mm	Laser Quality Optical Window	BK7	LQB5061OW	$40.00	LQB5061OW

NOTE: Quantities are limited and availability is subject to change. Please check back often.

*Also see our VUV grade MgF2, CaF2 & Crystal Quartz Windows for Vacuum UV (VUV) applications.

*Also see our Square Optical Windows with additional UV Fused Silica & BK7 Glass Material Properties