Usually, the focus lens is glued to prevent displacement. So you can't turn around. There is scattered light, noise, it is estimated that the lens is stuck by dust, please clean it. They got stuck and couldn't turn, but when I turned on the laser pointer for the second time, the noise spot was moving. Based on previous experience, I concluded that they melted or caught fire, but I didn’t know that the plastic melted. Or the dust on the glass melted.
How far is the 250mW (250mW) 650nm laser pointer at 8 degrees Celsius at night?
The range and temperature are not large. 250mw red light or about 200mw red light, the visible range at night is not less than 1000 meters, the actual range is related to the local air environment. For example, whether the fog is thin or not, the haze will affect the light penetration.
Can the laser pointer blink? Is it just to make it dance with the rhythm of the music?
Of course it is possible based on theory. The circuit has been changed to voice control. I have never seen a green laser pointer. The small stage laser has this voice control function.
What is the laser pointer with 18650 power supply?
Laser pointers that use 18650 lithium batteries are called laser flashlights. There are many laser flashlights. Because many laser flashlights use 18650 batteries.
Why does the laser pointer sometimes fail to respond to buttons?
There are two possibilities. One is that the button hardware itself has a problem, and the signal switch below is in poor contact. Secondly, there are problems with signal reception, that is, problems with internal software. Usually, such problems