05D20ER.2-PF Silver Mirror

The 05D20ER.2-PF Pinhole-Free Broadband Silver Mirror was developed to be virtually free of pinholes to significantly decrease scattering effects. Our Pinhole-Free mirrors are ideal for sensitive applications which require an economical broadband reflector. This 12.7 mm (1/2 inch) diameter mirror is made from a 3.1 mm thick Borofloat® 33 substrate. Borofloat has low thermal expansion and is an excellent substrate for most applications. The ER.2-PF protected silver coating is composed of a low emissivity silver film fully encapsulated by a multilayer dielectric stack to prevent oxidation. This coating has excellent broadband reflectivity in the IR, while maintaining very good performance in the visible and near IR. The 05D20ER.2-PF has an average reflectivity greater than 96% from 480-1100 nm and greater than 98.5% from 1.1-20 µm. This mirror has a λ/10 surface flatness and a 15-5 surface quality.

Specifications

Technical Specs

Wavelength Region
Broadband
Wavelength Range
480-20000 nm
Mirror Shape
Round
Diameter
12.7 mm
Mirror Size
Ø12.7 mm
Thickness
3.1 mm
Material
Borofloat® 33
Coating Type
Protected Silver
Coating Code
ER.2-PF
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Substrate Number
05D20

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
R_avg>96%, R_min>93% @ 480-1100 nm, R_avg>98.5%, R_min>97% @ 1.1-20 µm
Diameter Tolerance
+0/-0.13 mm
Thickness Tolerance
±0.25 mm
Chamfers
0.25–.076 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Wavelength Region
Broadband
Wavelength Range
480-20000 nm
Mirror Shape
Round
Diameter
12.7 mm
Mirror Size
Ø12.7 mm
Thickness
3.1 mm
Material
Borofloat® 33
Coating Type
Protected Silver
Coating Code
ER.2-PF
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Substrate Number
05D20

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
R_avg>96%, R_min>93% @ 480-1100 nm, R_avg>98.5%, R_min>97% @ 1.1-20 µm
Diameter Tolerance
+0/-0.13 mm
Thickness Tolerance
±0.25 mm
Chamfers
0.25–.076 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

Other

05D20ER.2-PF RoHS Certificate(703.4 kB, PDF)
ER.2 Raw Data.xlsx(205.4 kB, XLSX)

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Silver Mirror, Pinhole-Free, Borofloat, 12.7 mm, λ/10, 480-20,000 nm

Model: 05D20ER.2-PF

Product Series Overview