Image pickup element and image pickup apparatus
An image pickup element includes a pair of light-receiving elements that are configured to receive light from an object and are disposed for each lens among two-dimensionally arranged lenses, one of the light-receiving elements outputting a pixel signal forming one captured image in a pair of captured images having parallax for displaying a stereoscopic image of the object, and the other of the light-receiving elements outputting a pixel signal forming the other captured image in the pair of captured images, and wiring that is disposed between the light-receiving elements and is configured to transmit an input signal or an output signal of the light-receiving elements. Light leaking from one picture element to an adjacent picture element is blocked by the wiring layer, thereby preventing a reduction in resolution and in the stereoscopic effect of a stereoscopic image.
1. An image pickup element comprising:
a pair of light-receiving elements that are configured to receive light from an object and are disposed for each lens among two-dimensionally arranged lenses, one of the light-receiving elements outputting a pixel signal forming one captured image in a pair of captured images having parallax for displaying a stereoscopic image of the object, and the other of the light-receiving elements outputting a pixel signal forming the other captured image in the pair of captured images; and
wiring that is disposed between the light-receiving elements and configured to transmit an input signal or an output signal of the light-receiving elements,
wherein 1.4≦(1/p)·(r/(nav2−1)−hb)≦3,
where
r is a radius of curvature of each of the lenses,
p is a pitch of the lenses,
nav2 is an average refractive index of a medium between the lenses and the wiring, and
hb is a distance from a light-receiving surface of the light-receiving elements to the wiring.
2. The image pickup element according to claim 1 , wherein the wiring is disposed between pairs of the light-receiving elements.
3. An image pickup apparatus comprising: the image pickup element according to claim 1 ; and a display unit configured to display a stereoscopic image based on the pair of captured images according to claim 1 .
4. An image pickup apparatus comprising: the image pickup element according to claim 2 ; and a display unit configured to display a stereoscopic image based on the pair of captured images according to claim 2 .