4. Optics: image projectors
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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
Patent

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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
Patent

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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
Patent

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Operator responsive audio-visual teaching apparatus

Optics: image projectors – Plural projection paths with single light source
Patent

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Optic system of illumination for videoprojector

Optics: image projectors – Reflector
Reexamination Certificate

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Optical and focusing arrangement for microfiche reader

Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent

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Optical angle detection apparatus

Optics: image projectors – Distortion compensation
Reexamination Certificate

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Optical apparatus

Optics: image projectors – Temperature control – Blower
Reexamination Certificate

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Optical apparatus

Optics: image projectors – Temperature control – Blower
Reexamination Certificate

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Optical apparatus and cooling method thereof

Optics: image projectors – Temperature control – Blower
Patent

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Optical apparatus and projection apparatus

Optics: image projectors – Prism in light path
Reexamination Certificate

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Optical apparatus and projection type display apparatus...

Optics: image projectors – Unitary plural refracting surfaces
Reexamination Certificate

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Optical apparatus and projector

Optics: image projectors – Lens support
Reexamination Certificate

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Optical apparatus and projector

Optics: image projectors – Reflector
Reexamination Certificate

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Optical apparatus for liquid crystal display projector

Optics: image projectors – Polarizer or interference filter
Patent

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Optical apparatus in which image distortion is removed

Optics: image projectors – Lens support – Lens position adjustable
Patent

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Optical apparatus using polarizing beam splitter

Optics: image projectors – Composite projected image – Multicolor picture
Patent

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Optical apparatus, and projector

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

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Optical arrangement for non-inverting illumination system

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

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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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