Image projection apparatus, method of controlling image projection apparatus, and storage medium
AssigneeRicoh Company, Ltd.
InventorTAKAHIRO KADO
Life of this patent
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Abstract
An image projection apparatus includes a light source to emit light, a light modulator to modulate intensity of the light emitted from the light source for generating a projection image, and an image luminance controller to control the light modulator to maintain brightness of the projection image projected on a projection face at a substantially constant level during a given time period of the image projection apparatus. The given time period is from one time point when power supply to the image projection apparatus is started to another time point when a power level for driving the light source is increased to a given power level.
Claims11
An image projection apparatus comprising:
- a light source to emit light;
- a light modulator to modulate intensity of the light emitted from the light source for generating a projection image;
- and
- an image luminance controller to control the light modulator to maintain brightness of the projection image projected on a projection face at a substantially constant level during a given time period of the image projection apparatus, the given time period being from one time point when power supply to the image projection apparatus is started to another time point when a power level for driving the light source is increased to a given power level.
A method of controlling an image projection by an image projection apparatus comprising the steps of:
- emitting light from a light source;
- modulating intensity of the light emitted from the light source for generating a projection image;
- and
- controlling brightness of the projection image projected on a projection face at a substantially constant level during a given time period of the image projection apparatus, the given time period being from one time point when power supply to the image projection apparatus is started to another time point when a power level for driving the light source is increased to a given power level.
A non-transitory computer-readable storage medium storing a program that, when executed by a computer, causes the computer to execute a method of controlling an image projection by an image projection apparatus comprising the steps of:
- emitting light from a light source;
- modulating intensity of the light emitted from the light source for generating a projection image;
- and
- controlling brightness of the projection image projected on a projection face at a substantially constant level during a given time period of the image projection apparatus, the given time period being from one time point when power supply to the image projection apparatus is started to another time point when a power level for driving the light source is increased to a given power level.
Dependencies are inferred from the claim text.