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1. 发明专利

DE3425715A1 Refractometer 未知
$Refractometer$
公开(公告)号：DE3425715A1
公开(公告)日：1986-01-16
申请号：DE3425715
申请日：1984-07-06
申请人： SCHMIDT & HAENSCH FRANZ
发明人： DROSSEL HARALD
IPC分类号： G01N21/43 , G01N21/41
摘要： The invention relates to a refractometer for measuring the refractive index of liquids, having a light source conductor bent in the form of a U, into one limb of which the light of a light source is coupled and at the other limb of which the light transmitted via the light source conductor is measured. In order to facilitate the production of such a refractometer and to avoid measurement errors due to pollutants or the like, it is proposed that the light source conductor (1) is ground flat as far as the core (11) in the region of the U-shaped curve, and that the light source conductor comes into contact with the liquid to be measured only in the region of this ground part.

2. 发明专利

DE3113323A1 Drawing head with mechanical base adjustment and digital angle recording 未知
公开(公告)号：DE3113323A1
公开(公告)日：1982-10-14
申请号：DE3113323
申请日：1981-03-30
申请人： SCHMIDT & HAENSCH FRANZ
发明人： DROSSEL HARALD , SCHAAKE RAINALD
IPC分类号： B43L13/08
摘要： The invention relates to a drawing head with mechanical base adjustment and digital angle recording on an optically incremental basis, the head having a base plate, an intermediate ring system for the base adjustment with a brake and catch for the zero position, having a straightedge holder, and having a catch disc connected to the intermediate plate for producing defined mechanical angle catch positions. The object of the invention is to provide a combination of a digital-display drawing head having digital recording of the angle positions with a mechanical adjustment of the base system including the catch system so that, even in the adjustment of the base, the system of the catch assignment being symmetrical to the new base position remains intact and the adjustment angle of the base can be recorded digitally and displayed digitally. This object is achieved in that the angle recording consists of a scanning system rigidly connected to the straightedge holder and consisting of a transmitter (LED), a scanning grid and a receiver, in that the scanning system is connected electrically to a recording system having a microprocessor, in that a switch is mechanically connected to the brake for the base adjustment, which switch produces a base adjustment signal for the recording system, and in that a switch is mechanically connected to the catch, which switch transmits a signal for the base zero setting to the recording system when the intermediate plate is in the zero catch position.

3. 发明专利

DE2716314A1 未知
公开(公告)号：DE2716314A1
公开(公告)日：1978-10-12
申请号：DE2716314
申请日：1977-04-07
申请人： SCHMIDT & HAENSCH FRANZ
发明人： DROSSEL HARALD
IPC分类号： G01J4/04 , G01N21/40 , G01J4/00

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