We own many years of experience in field of the optical sensors and measurement technology，and produce a new generation of optical sensor which overcome the defects of the traditional laser sensor.this sensor can meet the requirement of higher quality, The superior measurement capability of the instruments makes them an ideal choice for the research departments too. The NLS13 autofocus sensor unites unequalled measurement speed, precision and resolution into one single system.This combination qualifies the NLS13 for demanding applications. Due to the auto-focussing principle, the sensor is ideally suited for coherent surfaces. For highly structured and/or discontinuous surfaces, the family of confocal sensors should be considered.
Starting in 2000, we introduced a family of confocal sensors to supplement the NLS13 autofocus sensor. These sensors exhibit most simple set-up and operation on highly structured, uncooperative and problematic surfaces. The extraordinary dynamic range of the sensors allows for the measurement of surfaces with a large variation on local reflectivity or steep edges without the necessity to adapt sensor or measurement settings.
Range: 0.3~0.1mm;
Resolution: 10-25nm;
The superior measurement capability and simplicity of operator；
Integrated trigger module；
The sensor is ideally suited for coherent surfaces, highly structured and/or discontinuous surfaces;
The products are used for quality management in the electronics and automotive industry, mechanical engineering , telecom industry and so on...
Model | NLS11 | NLS12 | NLS13 | NLS14 |
Measuring range，mm | 1 | 1 | 1.5 | 0.3 |
Resolution，nm | 20 | 20 | 10 | 25 |
Measuring gap，mm | 4 | 13.5 | 2 | 4 |
Spot diameter，um | <2< span=""> | 2 | 1.9 | 5 |
Laser grade | 2 | 1 | 1 |
|
light source | Semiconductor sensor | Semiconductor sensor | Semiconductor sensor | Halogen lamp |
Working principle | Confocal sensor | Confocal sensor | Automatic focus sensor | White light sensor |
◆We reserve the right to change the specifications without notice.
The light source is projected by the object lens on the sample's surface. The reflected light is collected by the very same lens, focused by the collimator lens and deflected towards the detector by a beam splitter. In the absence of the cylindrical lens, the light would converge to a tiny spot on the detector. The cylindrical lens deviates only one axis of the light, so a horizontal and a vertical focal line originate from the single spot. The detector is placed mid-way between the two focal lines.
A circular spot appears on the sensor if the surface is exactly in-focus. Deviation from the focal position results in an elliptic spot on the detector. The orientation and eccentrity of the spot depends on the magnitude and direction of the defocus.
The spot's shape is detectable by the current distribution in a photodiode array. The sensor's electronics generate an error signal resulting in a movement of the object lens to track the surface at exactly the focal distance. The motion of the lens is monitored by an incremental encoder (glass scale), comprising the profile signal.
The products are used for quality management in the electronics and automotive industry, mechanical engineering , telecom industry and so on...
The products are used for quality management in the electronics and automotive industry, mechanical engineering , telecom industry and so on...
