# LED black light flashlight

- By: El Grafo
- Date: 2014-10-23
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:LED_black_light_flashlight.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/LED_black_light_flashlight.jpg/1920px-LED_black_light_flashlight.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

A cheap aluminium LED flashlight emitting violet visible light as well as UV-A/black light (probably not below 380 nm though). Can be used for checking bank notes, reading "invisible ink" etc. This specific one was bought to “de-yellow” an old Takumar lens, results can be seen here.