Light irradiation method for varying a perceived brightness
First Claim
1. A light irradiation method using a sub irradiation section emitting sub illumination light and a main irradiation section for providing main light, the main irradiation section defining a target,wherein the sub irradiation section emits sub illumination light to or from at least one of a background and a neighborhood of the target, the method comprising the step of:
- performing time-wise control of an intensity of the sub illumination light emitted by the sub irradiation section so that a perceived brightness of the target is varied.
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Abstract
In a light irradiation method, a main irradiation section forming a target and a sub irradiation section for providing sub illumination light to or from at least one of a background and a neighborhood of the target are provided, and a perceived brightness of the target is varied by performing time-wise control of an intensity of the sub illumination light emitted by the sub irradiation section. When applied to an illumination system wherein the main irradiation section is an illumination source, or to an indication system wherein the main irradiation section is an indication lamp, a perceived brightness of the illumination source or the indication lamp is decreased by increasing the intensity of the sub illumination light, while increased by decreasing the intensity of the sub illumination light. When applied to an image display system wherein the main irradiation section is an image display section for displaying a prescribed image, a perceived brightness of the prescribed image is increased by increasing the intensity of the sub illumination light, while decreased by decreasing the intensity of the sub illumination light.
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Citations
15 Claims
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1. A light irradiation method using a sub irradiation section emitting sub illumination light and a main irradiation section for providing main light, the main irradiation section defining a target,
wherein the sub irradiation section emits sub illumination light to or from at least one of a background and a neighborhood of the target, the method comprising the step of: performing time-wise control of an intensity of the sub illumination light emitted by the sub irradiation section so that a perceived brightness of the target is varied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification