4. Optics: image projectors
  5. Light shield, mask, hood, or diaphragm
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Opaque adapter for overhead projector

Optics: image projectors – Light shield – mask – hood – or diaphragm
Patent

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Optical arrangement for use in a microfiche reader and method

Optics: image projectors – Light shield – mask – hood – or diaphragm
Patent

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Optical shutter with rotational axis in light path of...

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Optical system with array light source

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Optical system with iris controlled in real time

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Outer suspension type lens shielding mask for projection...

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Outer suspension type lens shielding mask for projection...

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Outer suspension type lens shielding mask for projection...

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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