发明名称 |
Apparatus for generating three-dimensional image of object |
摘要 |
A non-contact laser triangulation scanning apparatus for generating a three-dimensional image of the surface of an object based on the 3D surface position and surface contrast information. The apparatus comprises a laser source, a first optical unit, a second optical unit, a photosensitive positional detector having a plurality of sensor elements, and an incident light measurement device. According to generated timing signals having a predetermined time interval, a reset timing of the sensor elements of the photosensitive positional detector is controlled. The incident light measurement device measures an amount of a certifying laser light after one timing signal. An amount of a measurement laser light is determined dependent on the measured amount of the certifying laser light. The three-dimensional image is generated by combining position data derived from signals of the positional detector with contrast data derived at least from signals of the incident light measurement device. |
申请公布号 |
US8797552(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US200913378267 |
申请日期 |
2009.07.03 |
申请人 |
Leica Geosystems AG;Hexagon Metrology Kabushiki Kaisha |
发明人 |
Suzuki Satoshi;Suzuki Kengo;Takabayashi Masaki;Sano Yoichi;Suzuki Masahiro |
分类号 |
G01B11/24;G01B11/28;G01B11/30;G01B11/25 |
主分类号 |
G01B11/24 |
代理机构 |
|
代理人 |
Brennan Maschoff |
主权项 |
1. A scanning apparatus for generating a three-dimensional image of a surface of an object to be measured, comprising:
a laser source for emitting a laser light; a first optical unit for irradiating the laser light emitted from the laser source towards the surface of the object; a second optical unit for imaging the laser light reflected from the surface of the object; a photosensitive detector having a plurality of sensor elements, for detecting an imaging position of the laser light from the second optical unit; an incident light measurement device for measuring an amount of received laser light, which corresponds to the amount of laser light entering the photosensitive detector; and a processing unit for controlling the scanning apparatus in such a way, that:
a plurality of timing signals are generated having a predetermined time interval;the timing signals control a reset timing of a sensor element of the photosensitive detector;a certifying laser light is irradiated from the laser source after one timing signal for a period of time shorter than the predetermined time interval;an amount of the certifying laser light reflected from the surface of the object is measured with the incident light measurement device; andan amount of the measurement laser light emitted from the laser source is determined dependent on the amount of the certifying laser light measured with the incident light measurement device. |
地址 |
Heerbrugg CH |