Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP8012175ApriorityCriticalpatent/JPS524247A/en
Publication of JPS524247ApublicationCriticalpatent/JPS524247A/en
PURPOSE: In a microscope, to detect focus gap by taking image changing the light path length between the objective lens and the eye lens in more than 3 steps, keeping the light path length between the sample and objective lens constant.
COPYRIGHT: (C)1977,JPO&Japio
JP8012175A1975-06-301975-06-30Automatic focus adjuster unit
PendingJPS524247A
(en)