Video providing apparatus
AssigneeSanyo Electric Co., Ltd.
InventorTakahisa Ando
Life of this patent
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Abstract
There is provided a video providing apparatus capable of giving clear video to a patient with an eye disease. The video providing apparatus comprises a parallel light source or a parallel light type LED as a light source. Video light obtained by passing light from the light source through a liquid crystal display panel is supplied to an ocular optical system (Maxwellian view). In this configuration, the ocular optical system comprises a lens and a pinhole. The lens is provided such that the rear focal point thereof is positioned in close proximity to the eyeball of a viewer (a patient with an eye disease). The pinhole is arranged at the rear focal point, thereby causing a viewer to view video by Maxwellian view.
Claims18
A video providing apparatus comprising:
- a light source comprising a light emitter for emitting non-oscillation natural emission light;
- a video producing optical system for modulating the light from said light source in an spatial light modulator and outputting video light;
- a convergent element for converging said video light;
- and
- a pinhole arranged at the rear focal point of said convergent element,
- a viewer being caused to view video by Maxwellian view.
A video providing apparatus comprising:
- a light source comprising a light emitter for emitting non-oscillation natural emission light;
- a video producing optical system for modulating the light from said light source in an spatial light modulator and outputting video light;
- a first convergent element for converging said video light;
- and
- an optical system comprising a pair of second convergent elements provided between said video producing optical system and said first convergent element, and a pinhole arranged at the mutual focal points of the second convergent elements,
- a viewer being caused to view video by Maxwellian view.
A video providing apparatus comprising:
- a light source comprising a light emitter for emitting non-oscillation natural emission light;
- a video producing optical system for conversing dispersive light from said light source to provide the convergent light to an spatial light modulator, and outputting video light in the converging state modulated by the spatial light modulator;
- a pinhole provided at a converging point of the video light in said converging state;
- and
- an optical element for converging the video light in the dispersive state which has passed through said pinhole and positioning the converging point at the position of the eyeball of a viewer,
- the viewer being caused to view video by Maxwellian view.
Dependencies are inferred from the claim text.