4. Photography
  5. Having lens converter or extension tube

Yuji Ihara

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Autofocus lens barrel

Optical: systems and elements – Lens – With variable magnification
Patent

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Camera system and intermediate adapter

Photography – Having lens converter or extension tube
Patent

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Compound aspherical lens

Optical: systems and elements – Lens – Including a nonspherical surface
Patent

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Lens barrel

Optical: systems and elements – Lens – With variable magnification
Patent

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Lens barrel and CAM mechanism therefor

Optical: systems and elements – Lens – With variable magnification
Patent

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Profile ID: LFUS-PAI-P-146507

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