4. Photography
  5. With viewfinder
  6. With prism

Koichi Oshita

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Eyepiece lens and optical instrument comprising same

Optical: systems and elements – Lens – Eyepiece
Reexamination Certificate

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Lens system with switchable soft focus

Optical: systems and elements – Lens – Multiple component lenses
Patent

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Real image viewfinder which shifts prism ridge line away from ta

Photography – With viewfinder – With prism
Patent

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Wide zoom lens system

Optical: systems and elements – Lens – With variable magnification
Reexamination Certificate

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Profile ID: LFUS-PAI-P-870317

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