4. Optical: systems and elements
  5. Lens
  6. Reverse telephoto

You Kitahara

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Double-wavelength aperture restricting filter and optical...

Optical: systems and elements – Lens – With light limiting or controlling means
Reexamination Certificate

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Imaging lens for copying and copying apparatus

Photocopying – Projection printing and copying cameras – Illumination systems or details
Patent

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Inner-focus-type lens

Optical: systems and elements – Lens – Telephoto
Reexamination Certificate

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Large-aperture lens for low-illuminance imaging

Optical: systems and elements – Lens – Reverse telephoto
Patent

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Profile ID: LFUS-PAI-P-1088276

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