86results about How to "Evenly illuminated" patented technology

The backlighting device ( 1 ) enables an information display element of a portable object such as a wristwatch to be illuminated from the back. This device comprises a light guide plate ( 7 ) having a front face and a rear face, a light reflector ( 6 ) located on the rear face of the light guide plate, a light diffuser film ( 9 ) and a rectifier film ( 11 ) located on the front face of the light guide plate and a source of visible light ( 2 ). This light source, such as a light emitting diode ( 2 ), feeds light beams to the edge of the light guide plate, which spread in the light guide plate between its two faces. A layer, such as a diffuser film, has a zone ( 10 ') with opacity decreasing from a limit ( 25 ) located close to the boundary area of the light guide plate, which receives the light beams of the light source, in order to attenuate the intensity of the light crossing said zone. This zone with decreasing opacity is, for example, a shading white or black dye disposed on the diffuser film.

A lightweight, modular expandable multiple par lamp fixture configurable to form various sizes and intensities of high output area lighting or projected soft light. A high efficiency par lamp includes a high output globe and lightweight reflector, optional collar, and lens. Individual modular fixtures comprising high efficiency par lamps may be stacked to create larger units. The par lamps may be arranged in pods which can be assembled into larger units. A diffusion frame and fabric cover can be attached to the fixture in front of the par lamps to create a soft, deeply projected light. The diffusion frame may have an internal semi-translucent baffle to spread light through diffusive sidewalls.

A light board used for leading light for a keyboard is provided in the invention. The keyboard includes several keys. The light board includes many bores corresponding to the key and a permitting place area which includes permitting hole to receive the light source. Because at least one direction of thickness of the light board decreases following the direction far from the permitting place area. The permitting hole is in the permitting place area. So the light send from the light is leaded to the bottom of the key, so one light source can make all keys illuminate, it can decrease the light source number and decrease the energy cost.

The invention relates to a continuous hydrogen production reactor with photosynthetic bacteria, which comprises a shell. The shell is provided with a feeding opening at one end and a discharging opening at the other end, the inner wall of the shell is alternately provided with an upper baffle plate and a lower baffle plate in a direction perpendicular to the flowing direction of feed liquid, a gap is formed between the lower end of the upper baffle plate and the bottom wall of the shell, a gap is formed between the upper end of the lower baffle plate and the top wall of the shell, the upper baffle plate and the lower baffle plate are longitudinally arranged to alternately divide the shell into an ascending area and a descending area, an illumination device is arranged in the shell corresponding to the ascending area, and an air collecting hole is arranged at the top of the shell. Due to the structure of the continuous hydrogen production reactor with photosynthetic bacteria, feed liquid flowing in the shell alternately passes by the descending area and the ascending area to alternately pass by a black environment (the descending area) and an illumination environment (the ascending area) so that the illumination device is needless to switch on or off occasionally, the operation process is greatly simplified, and the service life of the illumination device is prolonged.

The invention discloses a light field modulator and a modulation method thereof. The light field modulator comprises at least one dodging element and a curved-surface light-transmitting substrate. Thecurved-surface light-transmitting substrate is provided with at least one curved surface; and the dodging element is correspondingly arranged on the curved surface of the curved-surface light-transmitting substrate, so that the microstructure of the dodging element is arranged along the curved surface of the curved-surface light-transmitting substrate and is used for homogenizing light emitted bya light source, and the light can uniformly and efficiently illuminate the corresponding target area; and the utilization rate of light energy is improved.