A common inexpensive laser pointer sold at a newsstand is believed to be of a non-separable design. However, using special techniques, it can be disassembled without damage.
Instructions
Step 1
Change into clothes and shoes that are not capable of accumulating electrostatic charges. Then briefly touch the radiator. This will prevent static electricity damage to the laser diode.
Step 2
Remove the pointer cover and remove the batteries from it. Fold them up so they don't touch each other.
Step 3
Pull the insulating cylinder out of the film from the device body. Save it.
Step 4
Unscrew the nozzle from the pointer and set it aside.
Step 5
Using a thread gauge, measure the parameters of the external thread pointer on the emitter, onto which the nozzle is screwed. If you don't have a thread gauge, just try all the nuts you have that are close to the same size until you find one that fits onto that thread.
Step 6
Wrap the appliance in several layers of fabric. Slightly, so as not to deform the body, clamp the wrapped pointer in a vice with the thread up.
Step 7
Screw a nut onto the thread. Then, using the pliers, continue screwing it in. Keep the pliers and nut straight and not skewed. Gradually, the emitter will come out of the housing and remain on the nut.
Step 8
Unscrew the nut from the transmitter. Now you can close the button (but not the resistor!) And apply a voltage of about 4 V to the emitter from three large AA or AAA batteries connected in series through an additional resistor of about 100 Ohm and a large, convenient switch. Beforehand, connect a capacitor with a capacity of about 0.01 μF in parallel with the laser diode. The brightness of the pointer will remain the same, but the cost of batteries will be significantly reduced.
Step 9
Measure the current through the pointer. It should not exceed 35 mA. If necessary, adjust the resistor value. Connect and disconnect the milliammeter or its replacement combined device with the power supply disconnected. Also remember to protect the laser from static electricity.
Step 10
If the laser diode is unpackaged, be very careful when working with the emitter so as not to brush it off.
