Projection apparatus, computer readable storage medium and control method of projection apparatus

摘要

A projection apparatus includes a time-sharing light emitting device, a display device, a projection optical system, an illuminance sensor and a lighting determination unit. The time-sharing light emitting device successively emits color lights one by one. The display device modulates the color lights to form an image. The projection optical system projects the image. The illuminance sensor converts illuminance of the color lights into an electric signal which is an output of the illuminance sensor. The lighting determination unit compares the output with a first threshold value, and operates the time-sharing light emitting device in response to the output being more than the first threshold value, and stops the time-sharing light emitting device in response to the output being equal to or less than the first threshold value.

主权项

1. A projection apparatus comprising:
a time-sharing light emitting device which successively emits a plurality of color lights one by one; a display device which modulates the color lights to form an image; a projection optical system which projects the image formed by the display device; an illuminance sensor which converts illuminance of the color lights into an electric signal which is an output of the illuminance sensor; and a lighting determination unit which (1) compares the output of the illuminance sensor with a first threshold value, (2) operates the time-sharing light emitting device in response to the output of the illuminance sensor being more than the first threshold value, and (3) stops the time-sharing light emitting device in response to the output of the illuminance sensor being equal to or less than the first threshold value.