| 摘要 |
<p>The device for the alignment, testing and/or measurement of two-dimensional objects lying on a table which can be displaced in at least two coordination directions running perpendicular to one another, and for determination of their co-ordinate position by touch-sensing using a light spot for each co-ordinate direction, has for each co-ordinate direction an illumination device with at least one ray collection system for focussing the light streams; the device has also optical means to merge the two light streams into one common light path and reproduction of the light streams in a common intermediate plane; also, a ray-dividing optical component for deflection of the light streams in accordance with the co-ordinate direction assigned to them; also, a system of reproduction for representation of the light patches on the object in each case; also, an optical component whose position can be changed in order to displace the light patches in the measurement co-ordinate directions assigned to them in each case; also a measurement system coupled to this component and designed to ascertain the shift in each case; also, at least one photo-electric receiver system, which transforms into electrical measurement signals the light streams reflected from the respective objects and resulting from the touch-sensing of the said objects. The device can also be used to determine the width of structures (not described!). Furthermore described is that with slight changes or additions this arrangement can be used as a mask comparison device as well as a device to test the flatness of surfaces.</p> |
