PinholeFree™ Broadband Metallic Mirrors
PinholeFree™ Broadband Metallic Mirrors
Being virtually free of pinholes, these metallic mirrors produce much lower scatter than standard metallic mirrors. They are ideal for sensitive applications requiring an economical broadband reflector.
- Three low-scatter metallic coatings cover UV - IR spectral bands
- Substrate flatness & surface quality λ/10, 15-10
- Available in diameter 12.7 mm, 25.4 mm, 50.8 mm
- Broader bandwidth than dielectric coatings
- Insensitive to polarization and angle of incidence
- Ideal for OEM applications See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 05D20AL.2-PF | |||||
| 05D20ER.1-PF | |||||
| 05D20ER.2-PF | |||||
| 10D20AL.2-PF | |||||
| 10D20ER.1-PF | |||||
| 10D20ER.2-PF | |||||
| 20D20AL.2-PF | |||||
| 20D20ER.1-PF | |||||
| 20D20ER.2-PF |
Specifications
Coatings
| Models | | | | |
|---|---|---|---|---|
| Coating Type | UV Enhanced Aluminum | Enhanced Aluminum | Protected Silver | |
| Coating Code | AL.2-PF | ER.1-PF | ER.2-PF | |
| Wavelength Range | 250-600 nm | 450-700 nm | 480-20000 nm | |
| Wavelength Region | UV | VIS | Broadband | |
| Reflectivity | Ravg>90% @ 250-600 nm | Ravg>93%, Rmin>90% @ 450-700 nm | Ravg>96%, Rmin>93% @ 480-1100 nm, Ravg>98.5%, Rmin>97% @ 1.1-20 µm | |
| Angle of Incidence | 0-45° | 0-45° | 0-45° | |
| Clear Aperture | ≥central 80% of diameter | ≥central 80% of diameter | ≥central 80% of diameter | |
| Cleaning | See How to Clean Optics | See How to Clean Optics | See How to Clean Optics |
Features
Borofloat® 33 Substrates
Borofloat 33 is a high quality borosilicate glass that offers low thermal expansion and high thermal shock resistance. Its material properties and moderate cost make Borofloat 33 an ideal substrate for general purpose applications. For more information, please see our Optical Materials technical note.
Pinhole Free Metallic Coatings
Pinhole Free Broadband Metallic Mirrors were developed to be virtually free of pinholes. Tiny pinholes in a metallic coating can increase scatter from a mirror.
Enhanced Aluminum VIS-NIR Coating
Our ER.1-PF enhanced aluminum coating may be used wherever a broadband visible and near infrared reflector is needed. A multilayer dielectric stack deposited over the aluminum film boosts reflectance and improves the durability of the coating. Average reflectivity is greater than 93% from 450-700 nm.
Protected Silver VIS-IR Coating
Our 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. Average reflectivity is greater than 96% from 480 – 1100 nm and greater than 98.5% from 1.1 – 20 µm.
Enhanced Aluminum UV Coating
Our AL.2-PF UV enhanced aluminum coating is a durable, broadband UV reflector with average reflectivity greater than 90% from 250-600 nm. The aluminum film is overcoated with UV transparent magnesium fluoride to prevent oxidation of the metal.
