4. Optical: systems and elements
  5. Lens
  6. With variable magnification

Katsuhiro Takamoto

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Illumination optical system and image projection apparatus

Optics: image projectors – Reflector
Reexamination Certificate

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Imaging optical system

Optics: image projectors – Reflector
Patent

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Oblique projection optical apparatus

Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Patent

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Oblique projection optical system

Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Patent

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Optical system and projection-type image display device

Optics: image projectors – Composite projected image – Multicolor picture
Reexamination Certificate

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Profile ID: LFUS-PAI-P-277022

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