| Patent application number | Description | Published |
|---|
| 20090097384 | LAMINATED WAVE PLATE AND OPTICAL PICKUP DEVICE USING THE SAME - A laminated wave plate that corresponds to a plurality of wavelengths including at least two wavelengths of λ | 04-16-2009 |
| 20100103084 | QUARTER WAVE PLATE, OPTICAL PICKUP DEVICE, AND REFLECTIVE LIQUID CRYSTAL DISPLAY DEVICE - A quarter wave plate that is a crystal plate made of an inorganic material having birefringence and optical rotatory power and has an optical axis, includes an incident surface positioned on one surface of the crystal plate; and an emitting surface positioned on another surface, which is opposed to the incident surface, of the crystal plate. In the quarter wave plate, linearly-polarized light incident from the incident surface is converted into circularly-polarized light so as to be emitted from the emitting surface, and circularly-polarized light incident from the incident surface is converted into linearly-polarized light so as to be emitted from the emitting surface. Further, in the wave plate, an angle φ formed by a normal line on the incident surface and the optical axis is set in a range of 0°<φ<90°, and an optical axis azimuth angle θ formed by an optical axis projection line, which is formed by projecting the optical axis on the incident surface, and a polarization plane of the linearly-polarized light is set in one of a range of 0°<θ<90° under θ≠45° and a range of 90°<θ<180° under θ≠135°. | 04-29-2010 |
| 20100110543 | LAMINATED QUARTER WAVE PLATE - A laminated quarter wave plate includes: a first wave plate made of an optically uniaxial crystal material; and a second wave plate made of an optically uniaxial crystal material. In the laminated quarter wave plate, the first and second wave plates are disposed in this order from an entrance side of light so that the optical axes of the first and second wave plates intersect with each other at an angle of 90°, and a phase difference Γ | 05-06-2010 |
| 20100245692 | LAMINATED WAVE PLATE, OPTICAL PICKUP DEVICE, POLARIZATION CONVERTER, AND PROJECTION DISPLAY APPARATUS - A laminated wave plate includes a first wave plate with a phase difference of Γ | 09-30-2010 |
| 20100246368 | LAMINATED HALF-WAVE PLATE, OPTICAL PICKUP DEVICE, POLARIZATION CONVERTER, AND PROJECTION DISPLAY APPARATUS - A laminated half-wave plate includes: first and second wave plates having optical axes intersecting each other, wherein when phase differences of the first and second wave plates with respect to a wavelength λ are represented by Γ | 09-30-2010 |
