In some examples, a first keyboard includes a plurality of light-sensing electrodes, where individual ones of the light-sensing electrodes correspond to individual keys of the first keyboard. The first keyboard includes a microprocessor electrically coupled to individual ones of the light-sensing electrodes. A second keyboard comprised of light-transmitting material may be placed on top of the first keyboard. The second keyboard may include a plurality of keys, with individual keys including a keycap having opaque material attached to a bottom surface and a scissors mechanism to lower the opaque material when a predetermined amount of pressure is applied to the keycap. The microprocessor is configured to perform operations including determining that the opaque material is obstructing light to a first particular light-sensing electrode of the plurality of light-sensing electrodes and sending a signal indicating a selection of a first key corresponding to the first particular light-sensing electrode.

The invention discloses a split type dual optical path key switch and a mechanical keyboard. The key switch comprises a key switch body, an LED emitter and a light receiver disposed on the PCB, wherein the key switch body comprises a housing and a handle disposed on the housing. The LED emitter and the light receiver are separated by a first light blocking component; a first light guiding body is disposed above the LED emitter, and a second light guiding body is disposed above the light receiver. The first guiding body is provided with a light transmitting portion and a first light reflecting portion, the second light guiding body is provided with a second light reflecting portion, and the handle is provided with a second light blocking component. The key switch can not only realize the function of backlight through the LED emitter, but also connect the switch with the help of the light receiver, so that the entire housing can reserve a sufficient space. In addition, transmitting light through the two light guiding bodies improves the stability of transmission, reduces the cost and process requirements of the key switch, and greatly improves the precision and service life of the mechanical keyboard.

An input device, comprising at least one key position (110) and a control and readout circuit (120). Each key position (110) is provided with a light transmission window (111) and a photosensitive device (112) thereon, the light transmission window (111) being used for the incidence of an external light, and the photosensitive device (112) being provided on the light path behind the light transmission window (111), the status of the photosensitive device corresponding to the light intensity of the incident external light. The control and readout circuit (120) is used for resetting and scanning each photosensitive device (112), and outputting, according to the scanned status of each photosensitive device (112), a key signal indicating whether the corresponding light transmission window (111) is covered or not. The input device obtains input information by means of sensing the variation of the light intensity, instead of the traditional press input method, enabling, on one hand, a quicker reaction speed and on the other hand requiring no finger press, not only reducing the workload of the finger, but also decreasing the requirement for finger dexterity.

The invention discloses a split type dual optical path key switch and a mechanical keyboard. The key switch comprises a key switch body, an LED emitter and a light receiver disposed on the PCB, wherein the key switch body comprises a housing and a handle disposed on the housing. The LED emitter and the light receiver are separated by a first light blocking component; a first light guiding body is disposed above the LED emitter, and a second light guiding body is disposed above the light receiver. The first guiding body is provided with a light transmitting portion and a first light reflecting portion, the second light guiding body is provided with a second light reflecting portion, and the handle is provided with a second light blocking component. The key switch can not only realize the function of backlight through the LED emitter, but also connect the switch with the help of the light receiver, so that the entire housing can reserve a sufficient space. In addition, transmitting light through the two light guiding bodies improves the stability of transmission, reduces the cost and process requirements of the key switch, and greatly improves the precision and service life of the mechanical keyboard.

A semiconductor device package is provided, which includes a carrier, an emitter and a first transparent encapsulant. The carrier has a first surface. The emitter is disposed on the first surface. The first transparent encapsulant encapsulates the emitter. The first transparent encapsulant includes a body and a lens portion. The body has a first planar surface. The lens portion is disposed on the body and has a first planar surface. The first planar surface of the lens portion is substantially coplanar with the first planar surface of the body.

An apparatus and method to recognize a moving direction of gesture are provided. A final moving direction of gesture is determined using the number of intersecting points based on output values from one or more sensors disposed in up, down, left, right directions and a code of an accumulated sum. Thus, a moving direction of target (hand) that moves on the sensors is recognized more accurately. The apparatus to recognize a moving direction of a gesture includes first to fourth sensor disposed at a position that is north, south, west, and east from a center; and a controller configured to identify a number of intersecting points based on output values of the first sensor, the second sensor, the third sensor and the fourth sensor and to estimate a moving direction of the gesture according to the number of the intersecting points.

The control device comprises at least one emitter-receiver pair, a display and a controller. The emitter-receiver pair comprises a radiation emitter and a receiver for receiving radiation emitted by the emitter and reflected by a moving body located at a distance from the pair. The receiver is positioned within the emitter's emission field and provides an electrical signal representative of the radiation received from the emitter. At least one symbol identifying an action, opposite an intersection of the emitter's emission cone and the receiver's reception cone, is displayed. The emitter and receiver are outside the display area of each symbol. The controller provides action control signal according to the electrical signal provided by the receiver. Each emitter-receiver pair is associated with at least one symbol and at least one action control signal when the moving body is in front of the symbol that identifies the action.

An input device, comprising at least one key position (110) and a control and readout circuit (120). Each key position (110) is provided with a light transmission window (111) and a photosensitive device (112) thereon, the light transmission window (111) being used for the incidence of an external light, and the photosensitive device (112) being provided on the light path behind the light transmission window (111), the status of the photosensitive device corresponding to the light intensity of the incident external light. The control and readout circuit (120) is used for resetting and scanning each photosensitive device (112), and outputting, according to the scanned status of each photosensitive device (112), a key signal indicating whether the corresponding light transmission window (111) is covered or not. The input device obtains input information by means of sensing the variation of the light intensity, instead of the traditional press input method, enabling, on one hand, a quicker reaction speed and on the other hand requiring no finger press, not only reducing the workload of the finger, but also decreasing the requirement for finger dexterity.

Disclosed is a system for a motor vehicle, including a steering wheel (2) connected to the steering system of the vehicle, the steering wheel including a plurality of optical sensors (7) arranged on the rim (25) of the steering wheel and designed to detect the presence of at least one finger (5) of at least one hand of the driver near or in contact with the rim of the steering wheel, by way of which the system is able to determine the number of fingers near or in contact with the rim of the steering wheel as well as their respective positions on the rim. Also disclosed is a method associated with the device.

Example embodiments of a reflective switch and methods for preventing inadvertent actuation of the reflective switch are disclosed. Exemplary embodiments of the reflective switch comprise a plurality of photo emitters that emit light through a translucent zone and a plurality of photo detectors that detect light rays that are reflected back through the translucent zone by an operator input. Upon detecting reflected light rays, the photo detectors send reflective signals to a controller. The controller then monitors whether the unique addresses of the photo detectors are increasing or decreasing and whether the addresses have increased or decreased to a predetermined threshold to merit a change in switch state. An indicia may be configured to notify an operator that a new switch state has been achieved.