Nonstop Experiment

November 2012.
I appreciate Koji Yamashita fight with me together till morning.

Soldering

Welding

https://plus.google.com/u/0/photos/102044080363331765541/albums/posts/5766702080764049746

Fixing laser pointer

Feb 2012. Capacitor replacement.

OD-Optical Density

Watts/cm2=Irradiance for CW lasers
Joules/cm2=Radiant Exposure for pulsed lasers

MPE=Maximum Permissible {Safe}Exposure(W(J/s)/cm2 or J/cm2)
Exposure times different for visible , IR, UV beams

OD=log quantity of exposure/MPE
http://www.pro-lite.co.uk/File/laser_safety_standards.php

VLT=Visible light transmission(% in units)
Ensure eyewears VLT is adequate

Google VS Spectacles(glasses)

ANSI Classification

Class1

Class2

Class2a

Class3a

Class3b

Class4