Mirror with image display function
According to the invention, there is provided a mirror with an image display function including, in this order: an image display device; a ¼ wavelength plate; a circular polarization reflection layer; and a front surface plate made of glass or plastic, in which the circular polarization reflection layer includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer has a central wavelength of selective reflection in a visible light region. The mirror with an image display function of the invention is capable of displaying a bright image.
1. A mirror with an image display function comprising, in this order:
an image display device;
a ¼ wavelength plate;
a circular polarization reflection layer; and
a front surface plate made of glass or plastic,
wherein the circular polarization reflection layer includes four or more cholesteric liquid crystal layers, and the four or more cholesteric liquid crystal layers have different central wavelengths of selective reflection,
wherein the circular polarization reflection layer includes a cholesteric liquid crystal layer having a central wavelength of selective reflection in a red light wavelength region, a cholesteric liquid crystal layer having a central wavelength of selective reflection in a green light wavelength region, a cholesteric liquid crystal layer having a central wavelength of selective reflection in a blue light wavelength region, and a cholesteric liquid crystal layer having a central wavelength of selective reflection in an infrared light region.
2. The mirror with an image display function according to claim 1 ,
wherein two or more cholesteric liquid crystal layers of the four or more cholesteric liquid crystal layers are in direct contact with each other.
3. The mirror with an image display function according to claim 1 ,
wherein in the circular polarization reflection layer, a cholesteric liquid crystal layer having a longer central wavelength of selective reflection is disposed closer to the image display device.
4. The mirror with an image display function according to claim 1 ,
wherein the ¼ wavelength plate is a layer formed by curing a composition containing a polymerizable liquid crystal compound.
5. The mirror with an image display function according to claim 1 ,
wherein the circular polarization reflection layer and the ¼ wavelength plate are in direct contact with each other.
6. The mirror with an image display function according to claim 1 ,
wherein the image display device and the ¼ wavelength plate are directly adhered to each other through an adhesive layer.
7. The mirror with an image display function according to claim 1 ,
which has an outer frame.