Wearable electronic device for controlling, on basis of remaining battery capacity, transmittance of transparent member and output luminance of projector, and operation method

Abstract

An electronic device is disclosed. The wearable electronic device, according to various embodiments, comprises: a battery; an illuminance sensor capable of measuring the brightness of the outside of the wearable electronic device; a transparent member capable of transmitting light incident from the outside; a light adjusting member arranged on at least one portion of the transparent member and capable of adjusting the transmittance of the incident light; a projector capable of outputting an image through the transparent member; and a processor, wherein the processor may be configured so as to measure the remaining capacity of the battery and the brightness of the outside, and when the remaining capacity is within a first predetermined range, adjust the transmittance to a first predetermined transmittance and adjust the output luminance of the projector to a first predetermined luminance on the basis of the brightness, and when the remaining capacity is within a second predetermined range, adjust the transmittance to a second predetermined transmittance and adjust the output luminance of the projector to a second predetermined luminance which is lower than the first predetermined luminance on the basis of the brightness. In addition, various embodiments may be provided.