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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

3" Dia. Protected Silver, λ/20 Flat ZERODUR®

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Stock #48-117-577 10 to 12 days
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₹73,568
Qty 1-10
₹73,568
Qty 11+
₹66,173
Volume Pricing
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Specifications

General

Note:
Flatness is specified as Peak to Valley
Type:
Flat Mirror

Physical & Mechanical Properties

Back Surface:
Commercial Polish
Diameter (mm):
76.20 +0.0/-1.02
Diameter Tolerance (inches):
+0.0/-0.04
Clear Aperture CA (mm):
68.58
Thickness (mm):
19.10 ±1.5
Thickness Tolerance (mm):
±1.5

Optical Properties

Surface Flatness (P-V):
λ/20
Surface Quality:
60-40
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Coating Specification:
Ravg >98% @ 450 - 2000nm
Ravg >98% @ 2000 - 10,000nm
Coating:
Protected Silver (450-10000nm)
Coating Type:
Metal
Wavelength Range (μm):
0.45 - 10
Wavelength Range (nm):
450 - 10000
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
0.5 J/cm2 @ 532nm & 1064nm, 10ns

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 242:

Product Details

  • Fused Silica and ZERODUR® Substrates
  • λ/10 and λ/20 Surface Flatness
  • Variety of Coating Options Offered

TECHSPEC® Precision Optical Flat Mirrors are ideal for various applications, including interferometry, imaging systems, laser applications, optical path folding, and autocollimation. These mirrors are available in multiple coating and substrate options and surface flatness options of λ/10 and λ/20. The first substrate option ZERODUR®, a yellow-tinted glass ceramic, features an extremely low coefficient of thermal expansion. TECHSPEC® Precision Optical Flat Mirrors are ideal for applications where temperature fluctuation is a concern using the ZERODUR® substrate. The second option, Fused Silica, is optically clear and features excellent resistance to abrasion and high durability, making it the best choice for applications in harsh environments.

TECHSPEC® λ/10 and λ/20 Precision Optical Flats are available for testing and measurement applications.

Note: Surface flatness specifications are measured before coating.

Coating Curves

  • Protected Silver (450-10000nm) - Rₛ 45°
  • Protected Silver (450-10000nm) - Rₚ 45°
  • Protected Silver (450-10000nm) - R(avg) 45°
  • Protected Silver (450-10000nm) - R @ 0°
Only 2 different Y Axises can be displayed at one time.

Please note that coating performance outside each product’s specified design range is theoretical and may vary.

Related Products

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

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