Name: 50mm Dia., 4mm Thick, VIS-NIR Coated, λ/4 Fused Silica Window
Brand: TECHSPEC
SKU: 14-992
Price: $188.00

Abbe Number (v_d):

67.8

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

45.00

Diameter (mm):

50.00 +0.00/-0.10

Thickness (mm):

4.00 ±0.10

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

Coefficient of Thermal Expansion CTE (10^-6/°C):

0.52 (+5 to +35°C)
0.57 (0 to +200°C)
0.48 (-100 to +200°C)

Density (g/cm³):

2.20

Edges:

Fine Ground

Index of Refraction n_d:

1.458

Knoop Hardness (kg/mm²):

522

Parallelism (arcmin):

Poisson's Ratio:

0.16

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Fused Silica (Corning 7980)

Surface Quality:

40-20

Transmitted Wavefront, P-V:

λ/4

Type:

Protective Window

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

Young's Modulus (GPa):

Regulatory Compliance

RoHS:

Compliant

Product Family Description

Available Uncoated or BBAR Coated for UV, Visible, and NIR
Ideal for Imaging Applications
Standard Diameter Sizes from 10 to 75mm
1λ or λ/10 UV Fused Silica Windows Also Available

TECHSPEC® λ/4 UV Fused Silica Windows are manufactured with 40-20 surface quality and λ/4 transmitted wavefront error specifications, making them ideal for imaging applications. Featuring UV fused silica substrates, these windows provide high transmission from the ultraviolet (UV) through the visible and near-infrared (NIR). Broadband anti-reflection (BBAR) coating options are available to minimize reflection losses and increase transmission. TECHSPEC λ/4 UV Fused Silica Windows are used in optical imaging applications, in low to medium powered laser applications, and as protective windows, especially in applications requiring transmission of UV light. Standard sizes from 10 to 75mm in diameter are available in a variety of thicknesses; please contact us for custom sizes or coatings for your application.

Title	Type	Stock Number	Price	Buy
50.0mm Optic Dia., Optic Mount	Fixed	#64-567	$55.00 Qty 10+ $49.50 Request Quote	In Stock ×
50.0mm Optic Dia., Optic Mount	Fixed	#64-568	$55.00 Qty 10+ $49.50 Request Quote	In Stock ×
9.5 - 73.0mm Optic Dia., Three-Screw Adjustable Ring Mount	Fixed	#36-605	$70.00 Qty 10+ $62.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., E-Series Kinematic Mount	Adjustable - Tip-Tilt	#15-867	$79.00 Qty 10+ $75.00 Request Quote	In Stock ×
50.0mm Optic Dia., Fixed Optic Mount, Quick Start Optical Mounts	Fixed	#17-516	$92.50 Request Quote	In Stock ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount	Fixed	#03-670	$96.00 Qty 10+ $85.00 Request Quote	In Stock ×
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder	Fixed	#03-669	$98.00 Qty 10+ $88.00 Request Quote	In Stock ×
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder	Fixed	#55-530	$98.00 Qty 10+ $88.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Kinematic Mount, 2-Screws	Adjustable - Tip-Tilt	#58-852	$98.00 Qty 5+ $88.20 Request Quote	In Stock ×
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder	Fixed	#03-666	$101.00 Qty 10+ $91.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Kinematic Mount, 3-Screws	Adjustable - Tip-Tilt	#58-855	$114.00 Qty 5+ $102.60 Request Quote	In Stock ×
50/50.8mm Diameter, E-Series Kinematic Mount, Quick Start Optical Mounts	Adjustable - Tip-Tilt	#17-522 New ×	$121.50 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Optical Cell Assembly	Fixed	#36-465	$134.00 Qty 10+ $119.00 Request Quote	In Stock ×
2"/50.8mm Diameter, Bar Type Lens / Filter Holder, Quick Start Optical Mounts	Fixed	#17-530	$135.00 Request Quote	In Stock ×
50/50.8mm Dia., Kinematic Mount, 3-Screws, Quick Start Optical Mounts	Adjustable - Tip-Tilt	#17-524	$156.50 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., X-Y Translating Optic Mount	Adjustable - Linear (XY)	#62-957	$273.00 Qty 5+ $259.00 Request Quote	In Stock ×
50.0/50.8mm Optic Diameter, X-Y Translating Optic Mount, Quick Start Optical Mounts	Adjustable - Linear (XY)	#17-514	$310.00 Request Quote	In Stock ×
50.0mm Optic Dia., Kinematic Mirror Mount	Adjustable - Tip-Tilt	#55-004	$320.00 Qty 5+ $304.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Kinematic Mirror Mount	Adjustable - Tip-Tilt	#55-005	$320.00 Qty 5+ $304.00 Request Quote	In Stock ×
50.0mm Optic Dia., Kinematic Mirror Mount with Micrometer	Adjustable - Tip-Tilt	#55-457	$343.00 Qty 5+ $326.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Kinematic Mirror Mount with Micrometer	Adjustable - Tip-Tilt	#56-326	$343.00 Qty 5+ $326.00 Request Quote	In Stock ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp	Fixed	#16-078	$356.00 Qty 5+ $314.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Kinematic Mirror Mount with Micrometer, Quick Start Optical Mounts	Adjustable - Tip-Tilt	#17-520	$397.40 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., Precision Gimbal Mount	Adjustable - Gimbal	#55-000	$455.00 Qty 5+ $410.00 Request Quote	In Stock ×
50/50.8mm ID, Precision Gimbal Mount, Quick Start Optical Mounts	Adjustable - Gimbal	#17-518	$493.90 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., X-Y-Z Translating Optic Mount	Adjustable - Linear (XYZ)	#62-960	$535.00 Qty 5+ $508.00 Request Quote	In Stock ×
50.0/50.8mm Optic Dia., 5 Axes Optical Mount	Adjustable - Linear (XYZ) & Tip-Tilt	#13-778	$745.00 Qty 5+ $708.00 Request Quote	In Stock ×