Abstract: The present technology relates to an artificial satellite and a control method thereof that enable to ensure quality of a captured image while suppressing battery consumption. An artificial satellite includes: an imaging device configured to perform imaging of a predetermined region on the ground; and a management unit configured to change accuracy of attitude control in accordance with a remaining battery amount at an instructed imaging time, and configured to change an imaging condition in accordance with accuracy of the attitude control. The present technology can be applied to, for example, an artificial satellite or the like that performs satellite remote sensing by formation flight.

Abstract: Provided are an optical sensor and a detection method which can suppress an influence of an ambient light to detect a target. An optical sensor which detect a target includes: a light reception portion, in which multiple pixels respectively receive lights and a light reception distribution signal showing a light reception amount of each pixel is obtained; an A/D conversion portion, which converts the light reception distribution signal to a digital signal for each pixel; an integration portion, which integrates multiple converted light reception distribution signals for each pixel; and a determination portion, which determines the presence or absence of the target based on the integrated light reception distribution signal.

Abstract: A front light and a reflective display using the same are provided. A light guide of the front light includes a plurality of patterns on the upper surface, each of the patterns including a first surface inclining relative to the light-emitting surface toward the light-entering surface, a second surface substantially perpendicular to the light-emitting surface or inclining relative to the light-emitting surface opposite to the light-entering surface, and a third surface inclining relative to the light-emitting surface toward the light-entering surface.

Abstract: A front light and a reflective display using the same are provided. A light guide of the front light includes a plurality of patterns on the upper surface, each of the patterns including a first surface inclining relative to the light-emitting surface toward the light-entering surface, a second surface substantially perpendicular to the light-emitting surface or inclining relative to the light-emitting surface opposite to the light-entering surface, and a third surface inclining relative to the light-emitting surface toward the light-entering surface.