Polarizer
First Claim
1. A polarizer comprising:
- a substrate which has a continuously undulated surface of trapezoid-waveform in cross section;
a layer of an optical element having a polarized-light separating function formed on each of sloping regions of the trapezoid-waveform surface; and
a layer of an optical element having a light reflecting or light absorbing function formed on each of the remaining regions excluding the sloping regions of said surface.
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Accused Products
Abstract
An improved polarizer employing thin films is provided having higher optical properties and capable of fabricating in the mass production and reducing in the overall size or thickness. Particularly, a layer of optical element for polarizing separation of light extends over an undulated surface of a substrate having a cross section of either trapezoid-waveform or triangle-waveform oriented in a particular direction. The substrate having a trapezoid-waveform surface incorporates layers of optical element for reflection or absorption of light which are provided on the upper- and lower-base regions, excluding the sloping regions, of the trapezoid-waveform surface. On the other hand, the substrate having a triangle-waveform surface incorporates layers of optical element for absorption of light which are provided on the upper and lower peak regions of the triangle-waveform surface.
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Citations
16 Claims
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1. A polarizer comprising:
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a substrate which has a continuously undulated surface of trapezoid-waveform in cross section; a layer of an optical element having a polarized-light separating function formed on each of sloping regions of the trapezoid-waveform surface; and a layer of an optical element having a light reflecting or light absorbing function formed on each of the remaining regions excluding the sloping regions of said surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A polarizer comprising:
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a substrate which has a continuously undulated surface of triangle-waveform in cross section; a layer of an optical element having a polarized-light separating function formed on each of sloping regions of the triangle-waveform surface; a layer of an optical element having a light absorbing function formed on each of upper and lower peaks of the triangle-waveform surface; and a layer of an optical element having a light waveform selecting function formed on a planar surface of the substrate opposite to the triangle-waveform surface. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification