LIQUID CRYSTAL PANEL

1 . A liquid crystal panel comprising:

two substrates; and

a liquid crystal interposed between the two substrates, wherein

a first substrate that is one of the two substrates includes:

a potential gradient forming section that is provided in a light-transmitting region and has an outer periphery edge having a circular shape;

a first electrode that is provided on an inner periphery side of the potential gradient forming section;

a second electrode that is provided on an outer periphery side of the potential gradient forming section and has a ring-like shape;

a first transmission section to which one of two different potentials is applied;

a second transmission section to which the other of the two different potentials is applied;

a first contact that couples the first electrode and the first transmission section; and

a second contact that couples the second electrode and the second transmission section,

the potential gradient forming section is made of a conductor having an electrical resistance higher than electrical resistances of the first electrode and the second electrode, and

a plurality of the second contacts are provided for the second electrode.

2 . The liquid crystal panel according to claim 1 , wherein

the second contacts are arranged to divide a ring of the second electrode into n sections, and

n is a natural number equal to or larger than two.

3 . The liquid crystal panel according to claim 2 , wherein

the first electrode includes a ring-shaped electrode having a ring-like shape, and

a plurality of the first contacts are provided for the ring-shaped electrode.

4 . The liquid crystal panel according to claim 3 , wherein

the first contacts are arranged to divide a ring of the ring-shaped electrode into m sections, and

m is a natural number equal to or larger than two.

5 . The liquid crystal panel according to claim 4 , wherein

the first transmission section has an arc-shaped section along the ring-shaped electrode, and

the first contacts couple the arc-shaped section and the ring-shaped electrode.

6 . The liquid crystal panel according to claim 5 , wherein

a plurality of the ring-shaped electrodes that have different diameters are provided,

the first transmission section has a straight extension that extends straight toward the outer periphery side from a position overlapping with one ring-shaped electrode located relatively on the inner periphery side among the ring-shaped electrodes, and an arc-shaped extension that extends from the straight extension along another ring-shaped electrode located on the outer periphery side of the one ring-shaped electrode among the ring-shaped electrodes, and

the first contacts couple the arc-shaped extension and the other ring-shaped electrode.

7 . The liquid crystal panel according to claim 1 , wherein

the second transmission section includes a base surrounding an outer edge of the light-transmitting region and an extension extending from the base into the light-transmitting region, and

the second contacts couple the extension and the second electrode.

8 . The liquid crystal panel according to claim 1 , wherein a circular electrode that is the first electrode is provided in the light-transmitting region.

9 . The liquid crystal panel according to claim 1 , wherein

a second substrate that is the other of the two substrates is provided with a common electrode that is provided to cover the light-transmitting region and faces the potential gradient forming section with the liquid crystal therebetween, and

the liquid crystal is controlled such that a refractive index of the light-transmitting region with respect to light entering the light-transmitting region along a direction in which the two substrates face differs between the inner and outer periphery sides of the gradient forming section depending on a potential gradient generated in the potential gradient forming section based on the potential difference between the two different potentials.