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US 2023/0358529 A1Published application
Optical pressure sensor and application thereof
AssigneeLuxsentek Microelectronics Corp.
InventorsWEI-TING LIN, SHENG-CHENG LEE, CHAO-YANG HSIAO
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Abstract
The invention provides an optical pressure sensor. The light-emitting module emits a detection light, and the light-receiving module receives a reflected light reflected by an object. When the distance between the object and the light-receiving module changes due to external pressure, the intensity of reflected light changes. The control module compares the intensity difference of the signal to determines the pressing state.
Claims10
An optical pressure sensor, comprising:
- a control module;
- a light-emitting module, connected to the control module, configured to emit a detection light, which is a series of pulses with an interval;
- and
- a light receiving module, connected to the control module, configured to convert a reflected light of the detection light, which is reflected by an object, into a sensed signal;
- wherein a distance between the object and the light receiving module or the light emitting module varies when the object is pressed, an intensity variation is caused by the sensed signal, and the control module calculates a pressing state according to the intensity variation.
2 more elements
Dependencies are inferred from the claim text.