Tell us about yourself!
Arif Sb. the lens could be found in DVD drive's sled.
You could have googled for sled. Anyway, here the sled means the DVD sled in which the laser diode and the lens are housed.
Homemade Laser Module
3D Printing Class
Tools and Materials for Arduino
Welcome to Arduino
DIY Coptic Stitch Bound Notebook
5 Cups Puzzle
DIY Vintage Hogwarts Journal
DIY Summer Sandals