Yasuji Ogata

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Compact zoom lens system comprising two lens units

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

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Diffractive optical element both surfaces of which comprise diff

Optical: systems and elements – Diffraction – From zone plate
Patent

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Distance measuring apparatus

Optics: measuring and testing – Range or remote distance finding – Triangulation ranging to a point with one projected beam
Patent

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Finder equipped with an indicator

Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent

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Four-unit zoom lens system having a high zoom ratio

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

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Profile ID: LFUS-PAI-P-90966

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