3" Dia. λ/20 Fused Silica Dual Surface Flat

Surface Flatness:

λ/20

Abbe Number (v_d):

67.8

Clear Aperture CA (mm):

68.58

Coating:

Uncoated

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

0.52

Diameter (mm):

76.20 ±1.0

Diameter (inches):

3.00 ±0.04

Thickness (inches):

0.75 ±0.06

Construction:

Dual Surface

Density (g/cm³):

2.2

Index of Refraction n_d:

1.458

Parallelism (arcmin):

1.00

Poisson's Ratio:

0.16

Thickness (mm):

19.05 ±1.5

Substrate:

Fused Silica (Corning 7980)

Surface Quality:

60-40

Type:

Interferometry

Wavelength Range (nm):

200 - 2200

Young's Modulus (GPa):

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Description

λ/20 flats include a certificate of calibration.

Title	Stock Number	Price	Buy
108.0mm Max Optic Dia., Jaw Clamp	#53-038	A$878.40 Qty 5+ A$790.80 Request a Quote	3-5 days ×
108.0mm Max Optic Dia., Jaw Clamp and 6" Kinematic Mount	#53-040	A$1,320.00 Qty 5+ A$1,254.00 Request a Quote	3-5 days ×
118mm English Bar-Type Lens / Filter Holder	#03-666	A$152.40 Qty 10+ A$137.20 Request a Quote	3-5 days ×
19.5 - 108.0mm Optic Dia., Three-Screw Adjustable Ring Mount	#03-670	A$138.80 Qty 10+ A$125.20 Request a Quote	3-5 days ×
75.0/76.2mm Optic Dia., Optical Cell Assembly	#36-466	A$210.00 Qty 10+ A$189.20 Request a Quote	3-5 days ×
75.0/76.2mm Optic Dia., Optical Cell Kinematic Mount	#53-965	A$592.00 Qty 10+ A$574.40 Request a Quote	3-5 days ×
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp	#16-078 New ×	A$544.00 Qty 5+ A$489.60 Request a Quote	3-5 days ×
75.0/76.2mm Optic Dia., E-Series Kinematic Mount	#15-868 New ×	A$316.80 Qty 10+ A$300.80 Request a Quote	3-5 days ×

3" Dia. λ/20 Fused Silica Dual Surface Flat

Regulatory Compliance

Product Description

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