Abstract: A fluid purification device is provided, which comprises a chamber having an inlet and an outlet, a fluid mover, such as a fan, which causes fluid to pass through the chamber from the inlet towards the outlet and four elongate UV-C light sources in an arrangement such that fluid passes along their length and such that each light source forms an elongate edge of a square prism. The volume of the chamber and the speed of fluid movement as caused by the fluid mover are such that the fluid has a residence time in the chamber of greater than 1.0 seconds. The device may in particular be used to purify air.

Abstract: An insect trap with glue boards which are mounted inside a housing so as to be not readily visible when the trap is seen from various angles. The trap uses a lens with a roughened inside surface in combination with a reflector (preferably double parabolic) to enhance a UV light source mounted inside the trap. The housing of the trap has openings through which insects are able to enter an inside chamber. The walls of the chamber are lined with glue boards, which may be treated with chemical attractant so as to increase the tendency for insects to land on the adhesive area of the glue boards. The trap is designed to appear to be a simple wall sconce, and the angle at which the boards are mounted is such that the trap may be mounted at any orientation or any elevation without any significant likelihood that trapped insects will be seen by persons looking at the trap.

Abstract: An insect trap with glue boards which are mounted inside a housing so as to be not readily visible when the trap is seen from various angles. The trap uses a lens with a roughened inside surface in combination with a reflector (preferably double parabolic) to enhance a UV light source mounted inside the trap. The housing of the trap has openings through which insects are able to enter an inside chamber. The walls of the chamber are lined with glue boards, which may be treated with chemical attractant so as to increase the tendency for insects to land on the adhesive area of the glue boards. The trap is designed to appear to be a simple wall sconce, and the angle at which the boards are mounted is such that the trap may be mounted at any orientation or any elevation without any significant likelihood that trapped insects will be seen by persons looking at the trap.

Abstract: An improved trap for catching insects that combines the use of attractant light and a sticky surface to trap the insects is provided. The trap includes a base, a dark colored insect trapping insert, a screen, a light source, and a cover housing. The insect trapping insert is secured to the base and has a sticky substance deposited on its exposed surfaces. The screen is arranged above the insect trapping insert in the insect trap in order to conceal at least a portion of the insect trapping insert. This serves to limit the extent which trapped insects are visible to individuals who pass by the insect trap. The light source, which typically comprises an ultraviolet light emitting fluorescent tube, is positioned above the screen and serves to attract insects. The base, insect trapping insert, screen and light source are covered with the cover housing.