Abstract: A battery capacity calculation device includes: a controller configured to: acquire, while a battery is in charge, a first voltage value and a charge current value of the battery, acquire, while charging of the battery is in pause, a second voltage value of the battery, calculate an impedance value of the battery by using the first voltage value, the second voltage value, and the charge current value, calculate an impedance growth that is a ratio of the impedance value to an initial impedance value recorded in a memory in advance, acquire the number of cycles of the battery, acquire time until a temperature of the battery falls within a predetermined temperature range and an output voltage value of the battery falls within a predetermined voltage range, and calculate a full charge capacity of the battery by using the number of cycles, the impedance growth, and the time.

Abstract: A stereo image pickup unit includes: first and second image pickup apparatuses including first and second image pickup devices and first and second mount boards, the image pickup apparatuses being formed in a same shape each other; and a holding frame for holding the first and second image pickup devices, the first and second mount boards including non-mounting surfaces perpendicular to rear surfaces of the first and second image pickup devices and projecting toward an outer side of projection surfaces of the first and second image pickup devices, the holding frame holding the first and second image pickup apparatuses such that the non-mounting surfaces are opposed to each other on a parallax direction inner side.

Abstract: A stereo image pickup unit includes: first and second image pickup apparatuses including first and second image pickup devices and first and second mount boards, the image pickup apparatuses being formed in a same shape each other; and a holding frame for holding the first and second image pickup devices, the first and second mount boards including non-mounting surfaces perpendicular to rear surfaces of the first and second image pickup devices and projecting toward an outer side of projection surfaces of the first and second image pickup devices, the holding frame holding the first and second image pickup apparatuses such that the non-mounting surfaces are opposed to each other on a parallax direction inner side.

Abstract: A stereo image pickup unit includes a first image pickup device configured to receive a first optical image formed by a first objective optical system, a second image pickup device configured to receive a second optical image formed by a second objective optical system, a single centering glass that is disposed on optical paths of the respective first and second optical images and to which light receiving surfaces of the respective first and second image pickup devices are positioned and fixed through bonding, and a holding frame that holds the first and second image pickup devices through the centering glass.