Lenses used in combination with XY galvanometer scanners are called ƒ-theta lenses, plane field objectives or simply scan lenses. ƒ-theta lenses are used in various applications from industrial material processing, drilling, welding of synthetic material and cutting in addition to medical and biotechnology (confocal microscopy, ophthalmology) to science and research. The design and the quality of the optical components are playing a decisive role.
Standard lenses focus the laser beam on a spherical plain in contrast to an ideal flat or plane field. The use of ƒ-theta lenses provides a plane focusing surface and almost constant spot size over the entire XY image plane or scan field. The position of the spot on the image plane is directly proportional to the scan angle.
|Font||Original fonts (numbers, alphabet, Katakana, Hiragana, Kanji)/user fonts/True Type fonts/ Dot font (SEMI single-density/SEMI double-density)|
|2D code||QR code /Micro QRcode/DataMatrix (ECC200)/GS1 DataMatrix|
|GS1 DataBar||GS1 DataBar/GS1 DataBar CC-A/GS1 DataBar Stacked/GS1 DataBar Stacked CC-A/ GS1 DataBar Limited/GS1 DataBar Limited CC-A|
|Logo image||Custom character font/logo data DXF/BMP/JPEG/PNG/TIF|
|Machinery operation||Fixed point/straight line/dashed line/circle/oval|
|Trimming||Single cut/L-shaped cut/multi-plunge/serpentine/free line/specify end point/relative shift|
The Autofocusing system is made up of a distance measurement module, stepping motor, stepping motor driver, control card and buttons. The distance measure module is used to detect the distance between galvo scanner head and the object down; Stepping motor is used to adjust the height of the galvo scanner; The buttons include Up, Down and Auto Focus. Control card controls the operation of the whole system.
Autofocus precision can achieve 0.1mm,measure range is 120mm-280mm, the system is equipped with alarm light and tone, when the object is not in the measurement, the control board indicator light is on and the buzzer alarm, then, through manual pressing button of moving up or down to move galvo scanner, which the object can be within a measuring range and the system will stop the alarm. The control board provides an alarm signal extension port, and the customer can receive the alarm signal externally according to the requirement. The automatic focusing system is increased the acceleration and deceleration process at the beginning and end of the moving process, which reduces shocking on the moment of starting or stopping. The moving speed can be set or change the moving by software.