4. Optical: systems and elements
  5. Lens
  6. Including a nonspherical surface

Wanli Chi

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Extended depth of field using a multi-focal length lens with...

Image analysis – Image enhancement or restoration
Reexamination Certificate

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Imaging using a multifocal aspheric lens to obtain extended...

Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate

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Imaging using a multifocal aspheric lens to obtain extended...

Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2855421

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