Timeline for If Infrared not visible, why the red LEDs?
Current License: CC BY-SA 3.0
24 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 19, 2021 at 7:46 | answer | added | user14631264 | timeline score: 0 | |
| Jul 7, 2020 at 19:22 | answer | added | jGecko | timeline score: 1 | |
| Jul 7, 2020 at 19:03 | answer | added | jGecko | timeline score: 0 | |
| Aug 3, 2017 at 19:53 | comment | added | Kaz | TV remotes do not typically have a visible LED in the front edge position that is aimed at the TV!!! They have it on the button panel (nowadays often under the translucent, soft buttons themselves), as a feedback that the remote control has battery power (it is working). | |
| Aug 3, 2017 at 14:18 | answer | added | Jesse Williams | timeline score: 2 | |
| Aug 3, 2017 at 12:41 | comment | added | Mayank | probably also an indication that you are being recorded and the camera is on and not just for show. So having such LED's can serve 2 purpose (illuminator and indicator). | |
| Aug 3, 2017 at 12:30 | answer | added | J Wuethrich | timeline score: 4 | |
| Aug 3, 2017 at 1:08 | answer | added | user39382 | timeline score: 9 | |
| Aug 2, 2017 at 19:28 | answer | added | Harper - Reinstate Monica | timeline score: 3 | |
| Aug 2, 2017 at 17:05 | comment | added | Solomon Slow | @OskarSkog LEDs are not lasers. They do not emit a single, pure wavelength. If you see a dim red glow from an infrared emitter, you probably are seeing the visible tail of a power spectrum that contains a much brighter, invisible component. | |
| Aug 2, 2017 at 16:48 | comment | added | dtmland | @DmitryGrigoryev Thank google image search for the photo. As I mentioned in a comment below, the image may or may not be photoshopped, however, it does represent the general look of such cameras with those red visible leds, according to my observations. | |
| Aug 2, 2017 at 16:35 | comment | added | Dmitry Grigoryev | Your picture looks like an illustration rather an actual photo, with red stuff added so it looks cool. | |
| Aug 2, 2017 at 15:04 | history | edited | dtmland | CC BY-SA 3.0 | added a word |
| Aug 2, 2017 at 14:58 | vote | accept | dtmland | ||
| Aug 2, 2017 at 14:26 | history | tweeted | twitter.com/StackElectronix/status/892753580423344128 | ||
| Aug 2, 2017 at 5:14 | answer | added | sweber | timeline score: 10 | |
| Aug 2, 2017 at 4:53 | answer | added | SDsolar | timeline score: 60 | |
| Aug 2, 2017 at 4:49 | answer | added | user57037 | timeline score: 16 | |
| Aug 2, 2017 at 4:33 | comment | added | Oskar Skog | If you see it with your bare eye, then it's a red LED. Looks to be a convenience feature, as I can't see any red light from my remote. (My phone's camera however does see that light.) // It might be possible that it's UV and not IR though. | |
| Aug 2, 2017 at 4:32 | history | edited | dtmland | CC BY-SA 3.0 | added 107 characters in body |
| Aug 2, 2017 at 4:27 | comment | added | dtmland | @OskarSkog I don't see the infrared light with my eyes - but I can see the little red LEDs just like this picture displays. Is that visible red light present as a convenience (by grace of the component designer) or as a by-product of emitting actual infrared light? | |
| Aug 2, 2017 at 4:25 | review | First posts | |||
| Aug 2, 2017 at 9:21 | |||||
| Aug 2, 2017 at 4:24 | comment | added | Oskar Skog | Do you see the infrared with your eyes or with a CCD camera? The CCD camera is sensitive for infrared, but usually the color filters will filter it out from all channels. | |
| Aug 2, 2017 at 4:21 | history | asked | dtmland | CC BY-SA 3.0 |