Optical diffraction element of refractive-index modulated...

Details Optical diffraction element of refractive-index modulated... Optical diffraction element of refractive-index modulated...

G - Physics

02

B

G02B 5/18 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2564936

A refraction index modulation diffraction optical element comprising a translucent DLC film formed on a translucent substrate, wherein the DLC film is subjected to refractive index modulation so as to include a plurality of regions having a relatively high refractive index and a plurality of regions having a relatively low refractive index for causing diffraction of light, characterized in that the refractive index modulation causes such a diffractive action that the intensity distribution at the cross-section of a light beam impinging on the DLC film is converted into a uniform intensity distribution on a specified irradiation surface.

Un élément optique de diffraction par modulation de l'indice de réfraction comprenant un film DLC transparent formé sur un substrat transparent, dans lequel le film DLC est soumis à une modulation d'indice de réfraction, de façon à inclure une pluralité de régions présentant un indice de réfraction relativement élevé et une pluralité de régions présentant un indice de réfraction relativement faible, afin de provoquer la diffraction de la lumière, caractérisé en ce que la modulation d'indice de réfraction provoque une action de diffraction telle que la répartition d'intensité au niveau de la section transversale du faisceau lumineux heurtant le film DLC est convertie en une répartition d'intensité uniforme sur une surface d'insolation spécifiée.

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