发明名称 Measuring microscope arrangement for measuring thickness and line width of an object
摘要 A measuring microscope arrangement is disclosed which includes a measuring microscope having a measuring head configured as a component which can be mounted on the microscope. The measuring head is suitable for the microdensitometric measurement of line widths as well as for the spectral interferometric measurement of thicknesses of objects such as semiconductor wafers, for example. In a first preferred embodiment of the arrangement of the invention, the object is scanned by displacing the object with the aid of a piezo table mounted on a scanning table utilized for obtaining a coarse position of the field of the object. The measuring microscope arrangement includes an objective for defining an intermediate image and the arrangement includes a measuring diaphragm mounted in the intermediate image. A diode-array spectrometer and an integral receiver are arranged behind the stationary diaphragm. A second preferred embodiment of the arrangement of the invention includes a further diode array in a second intermediate image plane in lieu of the integral measuring receiver. This further diode array is in addition to the diode-array spectrometer. In the second embodiment, a drive for the piezo table is unnecessary.
申请公布号 US4674883(A) 申请公布日期 1987.06.23
申请号 US19850772177 申请日期 1985.09.03
申请人 CARL-ZEISS-STIFTUNG 发明人 BAURSCHMIDT, PETER
分类号 G02B21/00;G01B9/04;G01B11/02;(IPC1-7):G01C3/08 主分类号 G02B21/00
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