An electronic device comprising a lens and a selector ring is disclosed. The selector ring is mounted for rotation about the lens and comprises a plurality of tabs projecting inwards towards the lens which engaging with and are held within a tab receiving groove comprising a plurality of spaced notches. Each of the notches is dimensioned to receive one of said tabs. A wave spring positioned between an annular ledge of the lens and the selector ring which biases the plurality of tabs against the groove and such that when each of the plurality of tabs is positioned adjacent a respective one of the notches, the tabs are biased into the notches thereby preventing said selector ring from being rotated. A user disengages the tabs from the notches by pressing said selector ring against the bias of the wave spring, thereby allowing the selector ring to be rotated.

An electronic device comprising a lens and a selector ring is disclosed. The selector ring is mounted for rotation about the lens and comprises a plurality of tabs projecting inwards towards the lens which engaging with and are held within a tab receiving groove comprising a plurality of spaced notches. Each of the notches is dimensioned to receive one of said tabs. A wave spring positioned between an annular ledge of the lens and the selector ring which biases the plurality of tabs against the groove and such that when each of the plurality of tabs is positioned adjacent a respective one of the notches, the tabs are biased into the notches thereby preventing said selector ring from being rotated. A user disengages the tabs from the notches by pressing said selector ring against the bias of the wave spring, thereby allowing the selector ring to be rotated.

Disclosed is a laser-based device for use primarily for laser light effects. The laser device comprises multiple red, green, and blue lasers. Each laser has a lens to collimate and focus each individual beam. The lasers are aligned such that each laser shares a common output axis. The intensity of each laser is adjustable thereby allowing the overall output color of the device to change. The overall output has over 16 million colors. Each laser-based device has a gimbal-like system to allow the devices change their orientation. A remote control system allows for the control and synchronization of multiple devices. Multiple devices may connect to the remote control system using cables, wireless transceivers, or both. Multiple devices may be located in close proximity to create a more powerful overall output beam. The remote control system allows for viewer interaction through an application installed onto a personal communication device.

Disclosed is a laser-based device for use primarily for laser light effects. The laser device comprises multiple red, green, and blue lasers. Each laser has a lens to collimate and focus each individual beam. The lasers are aligned such that each laser shares a common output axis. The intensity of each laser is adjustable thereby allowing the overall output color of the device to change. The overall output has over 16 million colors. Each laser-based device has a gimbal-like system to allow the devices change their orientation. A remote control system allows for the control and synchronization of multiple devices. Multiple devices may connect to the remote control system using cables, wireless transceivers, or both. Multiple devices may be located in close proximity to create a more powerful overall output beam. The remote control system allows for viewer interaction through an application installed onto a personal communication device.

The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).

The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).

This application provides a lighting box and a monitoring method therefor. The lighting box includes; a power management module, including a monitoring power supply module. The monitoring power supply module includes; a monitoring sensing module; a door opening sensing module; a heat dissipation device, configured to reduce the temperature of the lighting box; and an alarm apparatus, configured to send an alarm signal. The power management module further includes a lighting box power supply module including a light source module. The power management module controls the monitoring power supply module and the lighting box power supply module.

This application provides a lighting box and a monitoring method therefor. The lighting box includes; a power management module, including a monitoring power supply module. The monitoring power supply module includes; a monitoring sensing module; a door opening sensing module; a heat dissipation device, configured to reduce the temperature of the lighting box; and an alarm apparatus, configured to send an alarm signal. The power management module further includes a lighting box power supply module including a light source module. The power management module controls the monitoring power supply module and the lighting box power supply module.

Provided are an LED driving circuit and a tube lamp. A grounding terminal of a rectifying unit of the LED driving circuit is electrically connected to a first ground wire, and an input terminal of an impedance detection and protection unit is electrically connected to a second input terminal of a first filtering unit. The grounding terminal is electrically connected to the first ground wire. The impedance detection and protection unit is configured to detect an impedance between the second input terminal of the first filtering unit and the first ground wire, so as to control the second input terminal of the first filtering unit to connect to or disconnect from the first ground wire according to a magnitude of the detected impedance.

Provided are an LED driving circuit and a tube lamp. A grounding terminal of a rectifying unit of the LED driving circuit is electrically connected to a first ground wire, and an input terminal of an impedance detection and protection unit is electrically connected to a second input terminal of a first filtering unit. The grounding terminal is electrically connected to the first ground wire. The impedance detection and protection unit is configured to detect an impedance between the second input terminal of the first filtering unit and the first ground wire, so as to control the second input terminal of the first filtering unit to connect to or disconnect from the first ground wire according to a magnitude of the detected impedance.