Light detecting device and light detecting method using the same
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsChun Lin CHEN, I-Chung WANG, De-Fang HUANG
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Abstract
A light detecting device includes a light sensor and a controller. The light sensor is configured to generate a first detection value by detecting a region in an optical path of the illumination light at a first time point during a close period of a shutter action timing diagram. The controller is electrically connected with the light sensor and configured to obtain the first detection value; determine whether the first detection value is less than a first preset value; and if the first detection value is less than the first preset value, output an alarm signal.
Claims20
A light detecting device, comprising:
- a light sensor configured to generate a first detection value by detecting a region in an optical path of the illumination light at a first time point during a close period of a shutter action timing diagram;
- and
- a controller electrically connected with the light sensor and configured to:
- obtain the first detection value;
- determine whether the first detection value is less than a first preset value;
- and
- if the first detection value is less than the first preset value, output an alarm signal.
A light detecting method, comprising:
- generate a first detection value by detecting a region in an optical path of the illumination light at a first time point during a close period of a shutter action timing diagram by a light sensor;
- obtain the first detection value by a controller;
- determine whether the first detection value is less than a first preset value by the controller;
- and
- if the first detection value is less than the first preset value, output an alarm signal by the controller.
A light detecting device, comprising:
- a light sensor configured to generate a detection value by detecting a region in an optical path of the illumination light at a time point during an open period of a shutter action timing diagram;
- and
- a controller electrically connected with the light sensor and configured to:
- obtain the detection value;
- determine whether the detection value is greater than a preset value;
- and
- if the detection value is greater than the preset value, output the alarm signal.
Dependencies are inferred from the claim text.