4. Optical: systems and elements
  5. Deflection using a moving element
  6. Using a periodically moving element

Ludwig Meier

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Arrangement for spectral dispersion of a bundle of light

Illumination – Light modifier – Refractor
Patent

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Device for generating annular pictures

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent

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Optical system for lantern slide projection

Optics: image projectors – Miscellaneous
Patent

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Projector for projecting fixed star

Education and demonstration – Means for demonstrating apparatus – product – or surface... – Household equipment
Patent

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Star projectors for planetaria

Education and demonstration – Science – Astronomy
Patent

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Profile ID: LFUS-PAI-P-1519097

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