4. Optics: image projectors
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Film transparency projector

Optics: image projectors – Temperature control – Heat filter
Patent

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Heat absorbing glasses

Optics: image projectors – Temperature control – Heat filter
Patent

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Heat-dissipating device for a projection apparatus

Optics: image projectors – Temperature control – Heat filter
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Lamp assembly and power module for fanless microfiche reader

Optics: image projectors – Temperature control – Heat filter
Patent

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Light source apparatus and an image display apparatus

Optics: image projectors – Temperature control – Heat filter
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Light source apparatus and an image display apparatus

Optics: image projectors – Temperature control – Heat filter
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Light source device and projector

Optics: image projectors – Temperature control – Heat filter
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Microfilm sensing device with a projection lamp and cold-light m

Optics: image projectors – Temperature control – Heat filter
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