File:Landsat 4 visible Photodiode array.jpg
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 4,608 × 3,456 pixels.
Original file (4,608 × 3,456 pixels, file size: 4.62 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: This is a 50 times magnification of the photomasks used to fabricate the Hughes H4040, the linear photodiode array used in the Thematic Mapper to image the visible bands. Each of the 16 photodiodes is 100 microns square and their separation is 100 microns. There are two rows because it is scanned perpendicular to the lines of diodes and they produce a complete line with no separation. The alignment marks and their layer names can be seen at each end. The pink layer is a second layer of Aluminum acting as an aperture. The openings had to be 100u square exactly. |
| Date | |
| Source | Own work |
| Author | Nmassetti |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:58, 28 September 2021 | | 4,608 × 3,456 (4.62 MB) | Nmassetti | Cross-wiki upload from en.wikipedia.org |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
