No, for two reasons: 1.) The laser is moving and it never has constant focus at any one location (think PWM, you’re not shining at full power on any one location). 2.) The power of this unit is ...

[Jason H. Gao] and [Li-Shiuan Peh] used an infra-red (IR) line laser and the camera on a smartphone. Their prototype cost only $49 since they used a smartphone that was on hand. The article ...