An example circuit includes a plurality of light emitters connected in parallel between a first node and a second node. The circuit also includes a plurality of capacitors, with each capacitor corresponding to one of the light emitters, and a plurality of discharge-control switches, with each discharge-control switches corresponding to one of the capacitors. The circuit further includes a pulse-control switch connected to the plurality of light emitters. During a first period, the pulse-control switch restricts current flow, and each of the plurality of capacitors is charged via the first node. During a second period, one or more of the plurality of discharge-control switches allows current flow that discharges one or more corresponding capacitors. During a third period, the pulse-control switch allows current flow that discharges one or more undischarged capacitors of the plurality of capacitors through one or more corresponding light emitters.

The invention relates to a lighting control console (01) for controlling a lighting system, digital adjusting commands being generated in the lighting control console (01), a slide control (06) being provided in the housing (08) of the lighting control console, a slit (09) being provided in the housing (08) of the lighting control console (01), being penetrated by a connecting lever originating from the interior of the housing (08) and mechanically connecting the control knob (07) to the slide control (06), at least one light conducting element (10) allocated to the slit (09) being provided in the housing (08) of the lighting control console (01) and extending along the longitudinal axis of the slit (09), at least one light source being provided in the housing (08) of the lighting control console (01) and said light conducting element (10) comprising at least one light entry surface (13) at which light can be coupled into the light conducting element (10) from the light source, said light conducting element (10) comprising light exit surfaces along the longitudinal axis of the slit (09), light being able to exit from the light conducting element (10) at the light exit surfaces.

The invention relates to a lighting control console (01) for controlling a lighting system, digital adjusting commands being generated in the lighting control console (01), a slide control (06) being provided in the housing (08) of the lighting control console, a slit (09) being provided in the housing (08) of the lighting control console (01), being penetrated by a connecting lever originating from the interior of the housing (08) and mechanically connecting the control knob (07) to the slide control (06), at least one light conducting element (10) allocated to the slit (09) being provided in the housing (08) of the lighting control console (01) and extending along the longitudinal axis of the slit (09), at least one light source being provided in the housing (08) of the lighting control console (01) and said light conducting element (10) comprising at least one light entry surface (13) at which light can be coupled into the light conducting element (10) from the light source, said light conducting element (10) comprising light exit surfaces along the longitudinal axis of the slit (09), light being able to exit from the light conducting element (10) at the light exit surfaces.

An analog input device including at least one mounting panel and a matrix of analog push button assemblies mounted thereon. Each analog push button assembly including an analog pressure sensor including a pressure reception arrangement having an optical sensing sub-arrangement configured to measure an amount of light varied according to a pressure sensed at the pressure reception arrangement and an output terminal for outputting an analog signal corresponding to the amount of light measured, and a plunger element configured to exert the pressure on the pressure reception arrangement. The analog input device may include a multiplexer including an input side coupled to the push button assemblies and an output side; an analog-to-digital converter coupled to the output side of the multiplexer; a processor coupled to the analog-to-digital converter and configured to output a data packet; and a communication interface configured to transmit the data packet to a host computing device.

An analog input device including at least one mounting panel and a matrix of analog push button assemblies mounted thereon. Each analog push button assembly including an analog pressure sensor including a pressure reception arrangement having an optical sensing sub-arrangement configured to measure an amount of light varied according to a pressure sensed at the pressure reception arrangement and an output terminal for outputting an analog signal corresponding to the amount of light measured, and a plunger element configured to exert the pressure on the pressure reception arrangement. The analog input device may include a multiplexer including an input side coupled to the push button assemblies and an output side; an analog-to-digital converter coupled to the output side of the multiplexer; a processor coupled to the analog-to-digital converter and configured to output a data packet; and a communication interface configured to transmit the data packet to a host computing device.

A key module, a keyboard and an electronic device using same are provided. The key module includes a substrate, a light receiver, a light emitter and a lifting mechanism. The light receiver is disposed on and electrically connected with the substrate. The light emitter is disposed on and electrically connected with the substrate and disposed opposite to the light receiver. The lifting mechanism is disposed on the substrate and includes an interrupting portion, wherein the interrupting portion is movable to a region between the light receiver and the light emitter.

A key module, a keyboard and an electronic device using same are provided. The key module includes a substrate, a light receiver, a light emitter and a lifting mechanism. The light receiver is disposed on and electrically connected with the substrate. The light emitter is disposed on and electrically connected with the substrate and disposed opposite to the light receiver. The lifting mechanism is disposed on the substrate and includes an interrupting portion, wherein the interrupting portion is movable to a region between the light receiver and the light emitter.

A control panel for controlling a device comprises a scanning device being a plane surface scanner configured for scanning instantaneously an image of a surface of interest. It also comprises a front panel with a front side surface facing the user and a back side surface facing the scanning device and thus being scanable and at least one controller element mounted in the front panel and having contrast markings at the back side facing the scanner device with respect to a color of other portions of the back side of the front panel so that a state of the at least one controller is recognizable from an optical image of the back side of the front panel.

A control panel for controlling a device comprises a scanning device being a plane surface scanner configured for scanning instantaneously an image of a surface of interest. It also comprises a front panel with a front side surface facing the user and a back side surface facing the scanning device and thus being scanable and at least one controller element mounted in the front panel and having contrast markings at the back side facing the scanner device with respect to a color of other portions of the back side of the front panel so that a state of the at least one controller is recognizable from an optical image of the back side of the front panel.

A thin photoelectric mechanical keyboard switch includes a printed circuit board (PCB), a base, and a keycap. A first accommodation slot, a second accommodation slot, and a surrounding slot are provided at the base. A balancing frame is disposed in the surrounding slot. A torsion spring is arranged in the first accommodation slot. An upper through hole is provided at a bottom portion of the second accommodation slot, and a blocking piece, a hanging piece, a tension spring, and a guiding core are disposed in the second accommodation slot. One end of the tension spring is fastened in the guiding core and connected to the hanging piece, and the other end of the tension spring is connected to the balancing frame. The thin photoelectric mechanical keyboard switch utilizes light to implement turning on and off functions, realizing a thinned design, and enhancing pressing balance performance and stability.