Device capable of switching between image display status and a mirror status, and equipment provided therewith
First Claim
1. A device capable of switching between an image display status and a mirror status, the device including an image display portion that emits image light for displaying a desired image and a mirror function portion that is superposed on the image display portion and is capable of being switched between an image transmittance state that transmits the image light and a mirror status that reflects outside light, the mirror function portion including reflective polarization selection means, transmission polarization axis variable means, and absorbing polarization selection means successively disposed from the image display portion side, with the reflective polarization selection means transmitting a first polarization of a predetermined polarization axis and reflecting a second polarization whose polarization axis intersects that of the first polarization, the transmission polarization axis variable means being capable of switching between a state that transmits by changing the incident first polarization to the second polarization and a state that transmits without changing the polarization axis of the incident light, and the absorbing polarization selection means transmitting one of the first polarization and the second polarization and absorbing the other, and the image display portion being disposed with image light-use polarization selection means that transmits the first polarization and absorbs the second polarization, the image display portion emitting, as the image light, the first polarization transmitted through the image light-use polarization selection means.
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Accused Products
Abstract
There is provided a device capable of switching between a state that displays a high-quality image and a mirror status in which is obtained an easy-to-view reflection image suitable for a person to view his/her own face or figure. An image display portion 1000 that emits image light 3001, reflective polarization selection means 300 that transmits a first linear polarization component emitted from the image display portion 1000 and reflects a second linear polarization component, whose polarization axis is orthogonal to that of the first linear polarization component, a transmission polarization axis variable portion 400 capable of selecting between one of a state that changes the polarization axis of incident linearly polarized light and a state that does not change the polarization axis of incident linearly polarized light, and a polarization selection member 500 which, of the incident light, absorbs the first linear polarization component and transmits the second linear polarization component, whose polarization axis is orthogonal to that of the first linear polarization component, are disposed in this order. In this case, absorbing polarization selection means 208 is disposed at the image display portion 1000, and the first linear polarization is emitted as the image light.
183 Citations
22 Claims
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1. A device capable of switching between an image display status and a mirror status, the device including an image display portion that emits image light for displaying a desired image and a mirror function portion that is superposed on the image display portion and is capable of being switched between an image transmittance state that transmits the image light and a mirror status that reflects outside light,
the mirror function portion including reflective polarization selection means, transmission polarization axis variable means, and absorbing polarization selection means successively disposed from the image display portion side, with the reflective polarization selection means transmitting a first polarization of a predetermined polarization axis and reflecting a second polarization whose polarization axis intersects that of the first polarization, the transmission polarization axis variable means being capable of switching between a state that transmits by changing the incident first polarization to the second polarization and a state that transmits without changing the polarization axis of the incident light, and the absorbing polarization selection means transmitting one of the first polarization and the second polarization and absorbing the other, and the image display portion being disposed with image light-use polarization selection means that transmits the first polarization and absorbs the second polarization, the image display portion emitting, as the image light, the first polarization transmitted through the image light-use polarization selection means.
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4. A device capable of switching between an image display status and a mirror status, the device including an image display portion that emits image light for displaying a desired image and a mirror function portion that is superposed on the image display portion and is capable of being switched between an image transmittance state that transmits the image light and a mirror status that reflects outside light,
the mirror function portion including first reflective polarization selection means, transmission polarization axis variable means, second reflective polarization selection means, and variable polarization selection means successively disposed from the image display portion side, with the first reflective polarization selection means transmitting a first polarization of a predetermined polarization axis and reflecting a second polarization whose polarization axis intersects that of the first polarization, the transmission polarization axis variable means being capable of switching between a state that transmits by changing the incident first polarization to the second polarization and a state that transmits without changing the polarization axis of the incident light, the second reflective polarization selection means reflecting one of the first polarization and the second polarization and transmitting the other, and the variable polarization selection means being capable of switching between a state that absorbs one of the first polarization and the second polarization and transmits the other and a state that transmits all polarization components, and the image display portion being disposed with image light-use polarization selection means that transmits the first polarization and absorbs the second polarization, the image display portion emitting, as the image light, the first polarization transmitted through the image light-use polarization selection means.
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7. A device capable of switching between an image display status and a mirror status, the device including an image display portion that emits image light for displaying a desired image and a mirror function portion that is superposed on the image display portion and is capable of being switched between an image transmittance state that transmits the image light and a mirror status that reflects outside light,
the mirror function portion including first reflective polarization selection means, transmission polarization axis variable means, and second reflective polarization select ion means successively disposed from the image display portion side, with the first reflective polarization selection means transmitting a first polarization of a predetermined polarization axis and reflecting a second polarization whose polarization axis intersects that of the first polarization, the transmission polarization axis variable means being capable of switching between a state that transmits by changing the incident first polarization to the second polarization to transmit the second polarization and a state that transmits without change the polarization axis of the incident light, and the second reflective polarization selection means reflecting one of the first polarization and the second polarization and transmitting the other, and the image display portion being disposed with image light-use polarization selection means that transmits the first polarization and absorbs the second polarization, the image display portion emitting, as the image light, the first polarization transmitted through the image light-use polarization selection means.
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18. A display device disposed with an image display portion that emits light including a first polarization state and a mirror function portion that is superposed on the image display portion and is capable of selecting between one of an image display status that transmits image light from the image display member and a mirror status that reflects light proceeding from the outside to the image display member,
wherein, when the mirror function portion is switched to the mirror status, an emission state of the image display member is switched to a non-emission state in conjunction therewith.
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21. An instrument disposed with a display device, the display device including an image display portion that emits image light for displaying a desired image and a mirror function portion that is superposed on the image display portion and is capable of being switched between an image transmittance state that transmits the image light and a mirror status that reflects outside light,
the mirror function portion including reflective polarization selection means, transmission polarization axis variable means, and absorbing polarization selection means successively disposed from the image display portion side, with the reflective polarization selection means transmitting a first polarization of a predetermined polarization axis and reflecting a second polarization whose polarization axis intersects that of the first polarization, the transmission polarization axis variable means being capable of switching between a state that transmits by changing the incident first polarization to the second polarization and a state that transmits without changing the polarization axis of the incident light, and the absorbing polarization selection means transmitting one of the first polarization and absorbing the second polarization and the image display portion being disposed with image light-use polarization selection means that transmits the first polarization and absorbs the second polarization, the image display portion emitting, as the image light, the first polarization transmitted through the image light-use polarization selection means.
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22. A device capable of switching between an image display status and a mirror status, the device including an image display portion that emits image light for displaying a desired color image and a switching function portion superposed on the image display portion,
the switching function portion being capable of switching between a state that transmits the image light of the image display portion to the outside and displays a color image at the outside and a state that changes incident outside light to a polarization state reflected on the image display portion in order to switch the image display portion to the mirror status, the switching function portion including transmission polarization axis variable means and absorbing polarization selection means successively disposed from the image display portion side, with the transmission polarization axis variable means having a configuration that is capable of switching between a state that transmits by changing, when a first polarization of a predetermined polarization axis is made incident thereat, the first polarization to a second polarization whose polarization axis intersects that of the first polarization and a state that transmits without changing the polarization axis of the incident light, and the absorbing polarization selection means transmitting one of the first polarization and the second polarization and absorbing the other, the image display portion having a configuration that conducts color display by a field-sequential color display system, and the image display portion including reflective polarization selection means that transmits the first polarization and reflects the second polarization, with the image display portion generating the image light of a color of the first polarization by the first polarization being transmitted through the reflective polarization selection means.
Specification