公开(公告)号：US3807870A

公开(公告)日：1974-04-30

申请号：US25533272

申请日：1972-05-22

Applicant: KALMAN G

Inventor： KALMAN G

IPC: G01B11/06 ,  G01B11/00

CPC classification number: G01B11/06

Abstract: A thickness measuring instrument is disclosed which is of the optical type and adapted for transparent workpieces such as plastic or glass sheets or containers. The instrument utilizes a light beam which is reflected from both front and rear surfaces of the workpiece to be measured and the separation between the reflected beams is taken as a measure of the thickness. The separation between reflected beams is measured by means of a fixed linear array of sensors in the form of photodiodes which are electronically scanned to produce trigger voltages with time intervals therebetween corresponding to the distance between reflected beams. A measurement circuit in either analog or digital form accepts the trigger signals and converts the time interval therebetween into a digital signal or an analog voltage which corresponds to the thickness being measured.

Abstract translation: 公开了一种厚度测量仪器，其为光学类型并适用于诸如塑料或玻璃板或容器的透明工件。 该仪器使用从要测量的工件的前表面和后表面反射的光束，并且将反射光束之间的间隔作为厚度的量度。 反射光束之间的分离是通过光电二极管形式的固定的传感器线性阵列来测量的，这些传感器被电子扫描以产生其间具有时间间隔的触发电压，这些触发电压对应于反射光束之间的距离。 模拟或数字形式的测量电路接受触发信号，并将其间的时间间隔转换为对应于被测量厚度的数字信号或模拟电压。

公开(公告)号：US3718399A

公开(公告)日：1973-02-27

申请号：US3718399D

申请日：1971-06-29

Applicant: KALMAN G

Inventor： KALMAN G

IPC: G01N21/47 ,  G01N21/48 ,  G01J3/42 ,  G01J3/46

CPC classification number: G01N21/474 ,  G01N2201/0642

Abstract: A distance compensated reflectance sensor is presented having a hand held sensing unit for sensing reflectance from surfaces to be measured and generating a signal thereof to be delivered to a main unit where the signal is compared with preset standards or limits for generation of a warning signal if the measured reflectance departs from desired values. The hand held sensor element has a light source, a detector element, and a baffle structure. The baffle provides a partial overlap of the illuminated field and the viewing field, to provide for automatic compensation in the event of the deviation in distance between the surface being examined and the detector element. The source, the detector, and the baffle are arranged so that all direct and directly reflected light are blocked from the detector, i.e., the detector sees only scattered light.

Abstract translation: 具有距离补偿反射率传感器具有用于感测要测量的表面的反射率的手持式感测单元，并产生其信号被传送到主单元，其中信号与预设标准或警告信号的产生限制进行比较 所测量的反射率偏离所需值。 手持传感器元件具有光源，检测器元件和挡板结构。 挡板提供照明场和视场的部分重叠，以便在被检测表面与检测器元件之间的距离偏差的情况下提供自动补偿。 源极，检测器和挡板被布置成使得所有直接和直接反射的光被从检测器阻挡，即检测器仅看到散射光。