File:Enhanced_aluminum_coated_first_surface_mirror_on_an_optical_flat.JPG
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Summary
DescriptionEnhanced aluminum coated first surface mirror on an optical flat.JPG |
English: An optical flat that has been coated with aluminum by vacuum deposition, to make a first-surface mirror. The coating is enhanced with dielectric coatings, both improving the reflectance and protecting the soft aluminum from damage. Both sides of the optical flat were certified to be polished to /20. That's 1/20 of the wavelength of the helium-neon laser used in the interferometer, which equates to a surface deviation of no more than 31.6 nanometers.
The substrate is quartz, measuring 1 inch in diameter by 1/2 inch thick. |
Date | |
Source | Own work |
Author | Zaereth |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
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20 June 2012
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:06, 20 June 2012 | 1,656 × 1,164 (424 KB) | Zaereth~commonswiki |
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Exposure time | 1/250 sec (0.004) |
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ISO speed rating | 125 |
Date and time of data generation | 16:24, 20 June 2012 |
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File change date and time | 16:24, 20 June 2012 |
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Date and time of digitizing | 16:24, 20 June 2012 |
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