eo_logo
 
Product added to cart
See all 125 Products in Family
TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

50.8mm Dia. Protected Gold, λ/4 Mirror

×
Stock #25-740 7 In Stock
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£156.00
Volume Pricing
Qty 1-5 £156.00 each
Qty 6-25 £124.80 each
Qty 26-49 £116.80 each
Need More? Request Quote
Prices shown are exclusive of VAT/local taxes
Product Downloads

Specifications

General

Type:
Flat Mirror

Physical & Mechanical Properties

Diameter (mm):
50.80
Thickness (mm):
4.00 ±0.25
Back Surface:
Commercial Polish
Bevel:
Protective as needed
Clear Aperture (%):
90
Dimensional Tolerance (mm):
+0.0/-0.25
Edges:
Fine Ground

Optical Properties

Wavelength Range (μm):
0.7 - 10
Coating Type:
Metal
Coating:
Protected Gold (700-10000nm)
Surface Flatness (P-V):
λ/4
Wavelength Range (nm):
700 - 10000
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
BOROFLOAT®
Coating Specification:
Ravg >96% @ 700 - 2000nm Ravg >96% @ 2000 - 10,000nm
Surface Quality:
60-40
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
0.8 J/cm2 @ 1064nm, 10ns

Regulatory Compliance

RoHS 2015:
Compliant
×
Certificate of Conformance:
View
×
Reach 247:
Compliant
×

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.

Product Details

  • Available in a Wide Range of Sizes and Shapes
  • Precision Metallic Mirror Coatings
  • Contact Us for Custom Sizes

TECHSPEC® λ/4 First Surface Mirrors feature a high reflectivity coating deposited on the front surface of the glass substrate. The coated surface should be oriented to reflect incident light. TECHSPEC λ/4 First Surface Mirrors are offered in circular, square, and rectangular dimensions. First surface mirrors are ideal for applications requiring the mirror to be mounted at 45° in order to produce a 90° bend in the light path. These first surface mirrors easily mount into a range of optical mounts to facilitate application integration. The mirrors have available coatings of enhanced aluminum, protected aluminum, protected silver, and protected gold.

Note: Surface flatness is measured before coating. 

A range of mounts specifically compatible with individual TECHSPEC® First Surface Mirrors can be found on product web pages.    

;