Quartz Laser Focusing Lens Dia:18.5mm. FL=180 laser focus mirror
laser machine
Description:
| Name | Laser focusing mirror |
| Wavelength | 1064nmAR |
| Material | Imported Quartz |
| Size | 18.5mm |
| Focus length | 180 |
| Laser power | 0-15KW,(choose different types of different power) |
| Application | laser welding machine/laser cutting machine/laser head machine |
| Function | Protect pricy laser optics against damage from material splatter
and dust,due to the AR coating on the surface is designed according
to the working wavelength of the laser machine, so the laser
protective windows can extend teh service life of the laser
machine, reduces the Use-cost |
The focusing mirror is one of the important parts of the laser
marking machine, the purpose is to focus the laser on the marking
plane of the entire workpiece. Its performance indicators mainly
include the following:
1. Scanning range. The larger the area that the lens can scan,
the more popular it is of course. But if you blindly increase the
scanning area, it will bring a lot of problems. Such as the light
spot becomes thicker, the distortion increases and so on.
2. Focal length (has a certain relationship with the working
distance, but not equal to the working distance).
A. The scanning range is proportional to the focal length of the
field lens-an increase in the scanning range will inevitably lead
to an increase in the working distance. The increase of the working
distance will inevitably lead to the loss of laser energy.
B. The diameter of the focused spot is proportional to the focal
length. This means that when the scanning area reaches a certain
level, the obtained spot diameter is very large, that is to say,
the laser power density drops very quickly (the power density is
inversely proportional to the 2nd power of the spot diameter).
Conducive to processing.
C. Since the F-Theta field lens uses the relationship of y'=f*θ
to work, the actual values of θ and tgθ are still different. And
as the focal length f increases, the degree of distortion will
increase.
3. Working wavelength. At present, most of the ones used in the
market are 1064nm and 10600nm. But with the development of later
lasers, 532nm, 355nm and 266nm field lenses will also have
corresponding applications.
Three steps of cleaning:
1. Protect the lens, which is brittle and afraid of falling; pay
attention when disassembling: do not use too much force, and cannot
collide with hard objects. There is a coating on the surface, which
is afraid of pollution, humidity, oiliness, and scratching;
therefore, it is required to provide dry and degreasing air during
work. Do not directly handle the laser cutting machine to protect
the lens of the lens, because skin oil will affect Sexual damage to
the lens surface. On the contrary, you can wear gloves and its
special set for operation. For small lenses, it is convenient to
use optical tweezers or vacuum tweezers. No matter what method is
used to clamp the protective lens of the laser cutting machine, it
can only be clamped along the non-optical surface, such as the
frosted edge of the mirror plaque.
2. Under normal circumstances, it is necessary to check the
condition of the laser cutting machine to protect the lens before
use and before and after cleaning. Because most contaminants and
surface defects are relatively small in size, we often need to use
magnifying equipment when inspecting lenses. In addition to
magnifying equipment, sometimes we also need to illuminate the
optical surface with a relatively bright light to enhance the
specular reflection intensity of surface contaminants and defects,
so that contaminants and defects can be easily found.
3. When cleaning a laser cutting machine to protect the lens, clean
wipe paper and optical-grade solvent are often used to prevent
damage by other pollutants. The wipe paper must be moistened with a
suitable solvent, and it must not be used dry. In consideration of
softness, it can be cleaned with pure cotton wipes or cotton balls,
lens tissues and cotton swabs, etc.
