4. Optics: measuring and testing
  5. By polarized light examination
  6. With light attenuation

Katsunori Nagamatsu

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Detection of focal point of objective lens by means of a two-spl

Optics: measuring and testing – By polarized light examination – With light attenuation
Patent

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Method and apparatus for checking shape

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate

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Method and apparatus for checking shape

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1345901

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