Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,048 × 1,536 pixels.
Original file (2,048 × 1,536 pixels, file size: 3.77 MB, MIME type: image/png)
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
DescriptionDetail of DVD-RW optics.png |
English: Internal optics of a DVD-RW read/write head, detailing the path of the various light beams. Red = High-intensity record laser (to disc) Note the crystal at center frame is angled at 45 degrees, sloping up out of the picture and to the right. This reflects all three beams down into the picture (through the carriage) to the surface of the disc (which would normally be located where the blue mat is). The optical sensing chip (which converts the reflected beam into electrical signals) would normally be affixed to the right side of the carriage. There is also a lens (not shown) on the other side of the carriage which is mounted to a voice-coil assembly, allowing it to move up and down and thus changing the focal point of the beams. |
Date | |
Source | Own work |
Author | ereisch |
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 3.0 Unported 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.
Captions
Add a one-line explanation of what this file represents
DVD recorder<\/a>"}},"text\/plain":{"en":{"P180":"DVD recorder"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P180 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
Items portrayed in this file
depicts
author name string<\/a>"}},"text\/plain":{"en":{"":"author name string"}}},"{\"value\":\"ereisch\",\"type\":\"string\"}":{"text\/html":{"en":{"P2093":"ereisch"}},"text\/plain":{"en":{"P2093":"ereisch"}}},"{\"value\":{\"entity-type\":\"property\",\"numeric-id\":2699,\"id\":\"P2699\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"":"URL<\/a>"}},"text\/plain":{"en":{"":"URL"}}},"{\"value\":\"https:\\\/\\\/commons.wikimedia.org\\\/wiki\\\/user:Ereisch\",\"type\":\"string\"}":{"text\/html":{"en":{"P2699":"https:\/\/commons.wikimedia.org\/wiki\/user:Ereisch<\/a>"}},"text\/plain":{"en":{"P2699":"https:\/\/commons.wikimedia.org\/wiki\/user:Ereisch"}}},"{\"value\":{\"entity-type\":\"property\",\"numeric-id\":4174,\"id\":\"P4174\"},\"type\":\"wikibase-entityid\"}":{"text\/html":{"en":{"":"Wikimedia username<\/a>"}},"text\/plain":{"en":{"":"Wikimedia username"}}},"{\"value\":\"Ereisch\",\"type\":\"string\"}":{"text\/html":{"en":{"P4174":"Ereisch<\/a>"}},"text\/plain":{"en":{"P4174":"Ereisch"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P170 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
copyrighted<\/a>"}},"text\/plain":{"en":{"P6216":"copyrighted"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P6216 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
Creative Commons Attribution-ShareAlike 3.0 Unported<\/a>"}},"text\/plain":{"en":{"P275":"Creative Commons Attribution-ShareAlike 3.0 Unported"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P275 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
original creation by uploader<\/a>"}},"text\/plain":{"en":{"P7482":"original creation by uploader"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P7482 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">
7 December 2011
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 15:04, 8 December 2011 | 2,048 × 1,536 (3.77 MB) | Ereisch |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Horizontal resolution | 28.35 dpc |
---|---|
Vertical resolution | 28.35 dpc |
File change date and time | 14:32, 8 December 2011 |
Retrieved from "https://en.wikipedia.org/wiki/File:Detail_of_DVD-RW_optics.png"