An optical keyboard includes an upper cover plate, a bottom plate, a circuit board and plural optical keys. The circuit board is arranged between the upper cover plate and the bottom plate. The circuit board is connected with the upper cover plate that is disposed on the circuit board. The plural keys are penetrated through corresponding openings of the upper cover plate. Moreover, a bottom surface of each optical key is contacted with a top surface of the circuit board. The upper cover plate is an integral structure. Consequently, the components of the optical keyboard are simplified, and the assembling precision is enhanced.

Apparatus and method for both displaying graphical output and for sensing, e.g., multi-touch input are provided. A light-emitting diode (“LED”) matrix-array may be configured to both emit and sense light. The array may be driven in such a way so as to enable the array itself to act as the illumination source preferable for either reflective or scattering optical touch sensing. The need for additional opto-electronic components, or an external illumination source, is thus eliminated or at least reduced. Additionally, the matrix-arrays have large dimensions.

A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. The supporting component has a first end connecting to the keycap, and a second end movably assembled with the guide slot structure. The recovering component is disposed between the supporting component and the guide slot structure. The distance detecting unit is detachably disposed on the base, and adapted to detect a movement of the keycap relative to the base for determining whether the keyswitch is actuated.

The present disclosure provides an optical sensing device, including: a storage circuitry being coupled to a charging circuitry, a photosensitive circuitry, and a voltage-readout circuitry, the storage circuitry storing a voltage value; the charging circuitry being coupled to the storage circuitry for charging the storage circuitry; the photosensitive circuitry being connected to a first terminal for discharging the storage circuitry to the first terminal; and the voltage-readout circuitry being connected to the storage circuitry, for reading the voltage value of the storage circuitry.

The present application provides an intelligent control system for touch switch based on infrared sensor detection, which comprises: a position determination module, for setting infrared sensors in the first position, the second position, the third position, and the fourth position respectively, which are used to detect whether a person passes the current position; a time statistics module, for calculating the total time consumed by the target person passing through the first position, the second position, and the third position based on the detection result of those infrared sensors; a time determination module, for calculating the target time consumed by the target person passing from the third position to the fourth position; an intelligent control module, for selecting whether to turn on the light guide line from the fourth position to the position of the touch switch.

A keyswitch structure includes a base plate, a keycap, a scissors support connecting the keycap and the base plate, a linking support rotatably disposed on the base plate, a movable part movably disposed relative to the base plate, and a magnetic part on the movable part. The linking support includes a magnetic portion and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the magnetic part is located under the magnetic portion, and the magnetic attraction force drives the keycap through the linking support to move away relative to the base plate. When the movable part moves from the first position to a second position, the magnetic part moves away relative to the magnetic portion, so that the magnetic attraction force decreases so as to make the keycap move toward the base plate.

A keyswitch structure includes a base plate, a keycap, a lift mechanism connecting the keycap and the base plate, a movable part movably disposed relative to the base plate, a linking support, and a magnetic part on the base plate. The linking support has a pivotal connection portion, a magnetic portion, and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the pivotal connection portion is rotatably disposed on a protruding portion of the movable part, and the magnetic attraction force drives the keycap through the linking support to move away relative to the keycap. When the movable part moves from the first position to a second position, the protruding portion moves away, so that the pivotal connection portion falls down and the keycap moves toward the base plate.

An input assembly comprises a plurality of visual indicators differentiating between key regions on a plane. The input assembly also comprises a plurality of sensors, each arranged behind one of the key regions, and configured to determine a linear distance of the object from each of the sensors when the object is coming into proximity with the plane. Processing circuitry is configured to, based on input from the sensors, determine a location of a selected key region that the object is approaching ; instruct changing of a display of at least one of the plurality of visual indicators to highlight the selected key region with a first visual indication when an object approaches within the first predefined proximity of the selected key region; select, from among a plurality of values, a value that is associated with the selected key region, and output the selected value as a user-selected keypad value.

A luminous keyboard and an optical module thereof are provided. The optical module includes a light guide sheet, a reflective film on one side of the light guide sheet, and an optical film on another side of the light guide sheet opposite to the reflective film. The optical film has a mask pattern. The mask pattern defines a light-transparent region, a light-shielding region, and a light modulation region extending from the light-shielding region to the light-transparent region. The light-transparent region allows light to pass therethrough. The light-shielding region blocks light. The light modulation region partially allows light to pass therethrough and partially blocks light, so that an average light-transmitting rate per unit area of the light modulation region is smaller than that of the light-transparent region and larger than that of the light-shielding region.

A luminous keyboard and an optical module thereof are provided. The optical module includes a light guide sheet, a reflective film on one side of the light guide sheet, and an optical film on another side of the light guide sheet opposite to the reflective film. The optical film has a mask pattern. The mask pattern defines a light-transparent region, a light-shielding region, and a light modulation region extending from the light-shielding region to the light-transparent region. The light-transparent region allows light to pass therethrough. The light-shielding region blocks light. The light modulation region partially allows light to pass therethrough and partially blocks light, so that an average light-transmitting rate per unit area of the light modulation region is smaller than that of the light-transparent region and larger than that of the light-shielding region.