公开(公告)号：US3784309A

公开(公告)日：1974-01-08

申请号：US3784309D

申请日：1971-08-05

Applicant: COMPTEURS COMP D

Inventor： BRELOT R ,  TOURRET J

IPC: G01B11/02 ,  G01B11/14

CPC classification number: G01B11/026

Abstract: The variable relative distance d between the comparator and a test surface is measured by means of an optical system comprising a first glass-fiber bundle which directs a luminous flux to the surface and is surrounded by a second glass-fiber bundle which recieves the reflected flux and directs the flux to a receiver. The bundle of receiving fibers consists of three juxtaposed layers, namely a first layer which is adjacent to the emitting bundle and the fibers of which are directed towards a first receiver, a second intermediate layer in which 50 percent of the fibers are directed towards the first receiver and 50 percent of the fibers are directed towards a second receiver, and a third external layer of fibers directed towards the second receiver. The width of the intermediate layer is such that the value of d at which the signal of the first receiver is of maximum value is equal to the value of d at which the signal of the second receiver is located at the center at its linear range of variation.

Abstract translation: 比较器和测试表面之间的可变相对距离d通过包括第一玻璃纤维束的光学系统来测量，所述第一玻璃纤维束将光通量引导到表面并由第二玻璃纤维束包围，所述第二玻璃纤维束接收反射的通量 并将助焊剂引导到接收器。 接收纤维束由三个并置的层组成，即与发射束相邻并且其纤维指向第一接收器的第一层，第二中间层，其中50％的纤维指向第一 接收器和50％的光纤被引导到第二接收器，以及指向第二接收器的第三外部纤维层。 中间层的宽度使得第一接收机的信号为最大值的d的值等于第二接收机的信号位于其中心处的线性范围的d的值 变异。