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Collapsible overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Epi-illumination type projection device

Optics: image projectors – Episcope – Reflector between lamp and screen
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Episcopic projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Episcopic projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Foldable optical apparatus

Optics: image projectors – Episcope – Reflector between lamp and screen
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Low profile episcopic projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Low profile episcopic projector and opaque materials therefor

Optics: image projectors – Episcope – Reflector between lamp and screen
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Method and projection apparatus

Optics: image projectors – Episcope – Reflector between lamp and screen
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Off axis fresnel reflector for liquid crystal display

Optics: image projectors – Episcope – Reflector between lamp and screen
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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Overhead projector with centerless Fresnel lens reflective stage

Optics: image projectors – Episcope – Reflector between lamp and screen
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Portable opaque projector

Optics: image projectors – Episcope – Reflector between lamp and screen
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Projecting optical apparatus having no trapezoidal distortion

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