How to adjust the focus of the green light of the laser light

Is there a focus function?

Twelve: Adjust the focus to find the focus

The Nuoqing laser focusable flashlight can achieve the best thermal effect by adjusting the laser focus

The laser The light, after being adjusted by the lens of the flashlight head, will form a focus at a certain position on the flashlight head

Generally, the focus range of the laser is within 1 meter outside the light outlet

The best focus position, adjust The best range is within 10-20 cm from the light exit, that is, the thermal effect of the laser at the focus formed within this range is the strongest.

How to find the focus of the laser through adjustment is very important for players who like to play with things

Let’s briefly talk about one type

Start contacting the laser flashlight. You can press and hold the laser switch with one hand to light the laser in a slightly dark place. Then adjust the focus ring with the other hand. Adjust slowly and finely. While adjusting, observe within 20 cm from the flashlight port. When you look at the light, you will find that the light changes slightly in thickness as it is adjusted, and is the smallest at a certain point. Then this point is the focus point.

As you continue to adjust, you will find that the thinnest point is slowly moving, which means that with the adjustment, the focus of the laser is moving.

Generally, the focus heat effect is greatest within 10-40 cm from the flashlight port.

If you are not aware of the light, smokers can blow a puff of cigarette smoke on the laser light, and you will clearly see that the light at a certain point is the thinnest, which is the focus of the laser at this distance.

You can also make the laser point hit an object, such as a keyboard or a match. The best distance is probably within 10-20 cm.

Then adjust the focusing ring while observing the size of the laser spot hitting the object. With adjustment, the laser spot will change from large to small, or from small to large.

When it is observed that the laser spot hitting the object is the smallest, it is the focus of the laser at this distance.

It should be noted that do not adjust the focus too close to the flashlight, for example, within 5 cm. In this case, if you point an object at a close distance, the smoke and dust emitted by the object may make the lens dirty. . Generally, the focus position is optimal within the range of 10cm-20cm. When you point an object at this position, smoke and dust will not affect the lens.