- #1
hagopbul
- 357
- 37
- TL;DR Summary
- trying to understand how ir radiation from a remote controller is detectable by cellphone camera
Hello All:
i saw some youtube videos on testing IR controllers on normal with no add ons Cell phone camera and the cell phone screen is showing signal emitted by the IR LED of the remote controller , how the cell phone camera sensor are able to register a signal from an IR LED , the pixle in the sensor is semiconductor with a band gab corresponding for a color the IR is lower energy than most of the colors in the white light and the intensity of this IR LED is not even considered enough for any thing
i test it by my self with low power IR LED from an 5 year old remote of air conditioner and the screen of the cell phone registered or better say showed the detector blinking which i didnt understand due to the reasons i mentioned above
https://www.carolina.com/knowledge/2020/02/20/make-the-invisible-visible
Best
H.B.
i saw some youtube videos on testing IR controllers on normal with no add ons Cell phone camera and the cell phone screen is showing signal emitted by the IR LED of the remote controller , how the cell phone camera sensor are able to register a signal from an IR LED , the pixle in the sensor is semiconductor with a band gab corresponding for a color the IR is lower energy than most of the colors in the white light and the intensity of this IR LED is not even considered enough for any thing
i test it by my self with low power IR LED from an 5 year old remote of air conditioner and the screen of the cell phone registered or better say showed the detector blinking which i didnt understand due to the reasons i mentioned above
https://www.carolina.com/knowledge/2020/02/20/make-the-invisible-visible
Best
H.B.
Last edited by a moderator: