4. Optics: eye examining, vision testing and correcting
  5. Spectacles and eyeglasses
  6. Folding

Masao Nohda

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Apparatus for measuring the radius of curvature

Optics: measuring and testing – Lens or reflective image former testing – For optical transfer function
Patent

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Apparatus for measuring the refractive power of an optical syste

Optics: measuring and testing – Lens or reflective image former testing – Focal length measuring
Patent

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Apparatus for measuring the refractive power of an optical syste

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent

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Apparatus for subjectively measuring the refractive power of an

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent

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Automatic focusing device in a stereoscopic microscope

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

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Profile ID: LFUS-PAI-P-399255

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