Weak in first 10 sec

Dear fellows I would like to ask you something about an 150 mw module of a green pointer.
I remove it carefuly and I use it in other project but when I push on to lit the laser I found is weak in first about 10 seconds and it grows in brightness in little steps until is again in full power.

Please tell me why and what is well to do.
Thank you :thinking:

This is normal, the laser needs time to warm up

This is just an 150 mw laser pointer module and is not first time for me to do that....other modules work very normal ...I mean in first second lit at full 150 mw power...When receiv the laser pointer I switched on and it lit very very well but after remove it it work ....weak in first 10 sec

Well modules vary from manufacturer to manufacturer. I've gotten the same "model" of modules from o-like and they've been very different, with different optics, drivers, etc. so you can't be sure that one will be like the other. It does sound like your pointer just needs to warm up a bit before it reaches its full capacity. Be thankful it isn't dimming as time goes by!