LED black light flashlight



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English: 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.
Deutsch: Eine billige LED-Taschenlampe, die Licht im violetten sichtbaren und Schwarzlichtbereich (jedoch vermutlich nicht unter 380 nm) ausstrahlt. Kann zur Überprüfung von Banknoten, zum Lesen "unsichtbarer Tinte" etc. verwendet werden.
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Author El Grafo


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EXIF data:
File name led_black_light_flashlight.jpg
Size, Mbytes 1.8683115234375
Mime type image/jpeg
Camera manufacturer PENTAX
Camera model PENTAX K-5
Image resolution in width direction 300
Image resolution in height direction 300
Unit of X and Y resolution 2
Exposure time 1/160 sec (0.00625)
F number f / 11
Exposure program 1
ISO speed rating 200
Exif version 0220
Lens focal length 100 mm
Date and time original image was generated 2014:10:23 19:59:59
Date and time image was made digital data 2014:10:23 19:59:59
Exposure bias 0
Metering mode 5
Sensing method 2
Exposure mode 1
Focal length in 35 mm film 150 mm
Subject distance range 2
Software used LightZone
Copyright holder El Grafo (CC-BY-SA 4.0)

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