Imported Quartz JGS1 18.5*2mm FL=40 Laser Focusing Lens 808nmHR
1064nmHT Mirror
Decription:
Prduct name: Laser focusing lens
Size:18.5*2mm
Focus length:40
Coating:808nmHR 1064nmHT
Polised:Yes
Chamfer:0.2mm*45 degree
Surface quality:40/20
1. Scanning range.
The larger the area the camera can scan, the more popular it will
be. But if you blindly increase the scanning area, it will bring a
lot of problems. For example, the light spot becomes thicker, the
distortion increases and so on.
2.Focal length (related to working distance, but not equal to
working distance).
a. The scanning range is directly proportional to the focal length
of the field mirror the increase of the scanning range will
inevitably lead to the increase of the working distance. The longer
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
degree, the diameter of the light spot obtained is very large, that
is to say, it is not fine enough, and the power density of the
laser decreases very quickly (the power density is inversely
proportional to the second power of the spot diameter), which is
not conducive to processing.
c. Because the f-theta field mirror works by using the relation of
Y '= f * θ, the actual values of θ and TG θ are different. And with
the increase of focal length f, the distortion will be more and
more serious.
3.Working wavelength.
At present, 1064nm and 10600nm are mostly used in the market.
However, with the development of lasers, 532 nm, 355 nm and 266 nm
field mirrors will also have corresponding applications.
Function:
The main functions of the focusing mirror are as follows:
1. The ability of edge beam to incident to detector is improved;
2. In the same main optical system, the additional field mirror
will reduce the detector area, if the same detector area is used,
the field of view can be expanded and the incident flux can be
increased;
3. The non-uniform illumination on the photosensitive surface of
the detector can be homogenized.
Application examples:
It is mainly used in laser marking machine, stage lighting,
scientific experiments and laser measuring instruments.
