-
公开(公告)号：JPH021214A
公开(公告)日：1990-01-05
申请号：JP2472689
申请日：1989-02-02
Applicant: ESSILOR INT
Inventor： BERUNAARU KAZAN , AAMUDO HADAJI , JIYAN KUROODO ANKAN
Abstract: PURPOSE: To measure an inter-pupil range by providing the subject device with a liquid crystal matrix device at a window part for graticule display on a front panel and providing this matrix device with a digital address generator and a controller for controlling the display of gradicules. CONSTITUTION: Window parts 15-18 are arranged on the front panel, and these window parts are composed of a liquid crystal matrix. A logic device 20 is selectively connected to the row and column input parts of matrix at the window parts 15 and 16 and the row input part of matrix at the window parts 17 and 18. A control keyboard 21 consists of a state change control address generator together with the logic device 20. The matrix column address signals of the window parts 15 and 16 are received so that a dark vertical line 16a can be watched. The address signals can be changed by using the keyboard 21 and this is performed until the line 16a passes through the reflecting part of a light source on the cornea. The respective address signals are corresponding to distances from the centers of pupils of relevant eyes to the symmetric vertical axis of the front panel and the total of both the distances become the inter-pupil range. The inter-pupil range and the distances from the symmetric vertical axis to the left and right pupils are displayed by the logic device 20.
-
公开(公告)号：JPS59120128A
公开(公告)日：1984-07-11
申请号：JP24181483
申请日：1983-12-21
Applicant: ESSILOR INT
Inventor： BERUNAARU KAZAN , AAMUDO HADAJI , JIYAN KUROODO ANKAN
-
Search Results
2
records
(took 0.019 seconds)
