32results about How to "Reduce light area" patented technology

A solid-state imaging device includes a layout in which one sharing unit includes an array of photodiodes of 2 pixels by 4×n pixels (where, n is a positive integer), respectively, in horizontal and vertical directions.

Disclosed is a light emitting diode (LED) operated by being directly connected to an AC power source. An AC LED according to the present invention comprises a plurality of light emitting cells two-dimensionally arranged on a single substrate; and wires electrically connecting the light emitting cells; wherein the light emitting cells are connected in series by the wires to form a serial array, the single substrate is a non-polar substrate, and the light emitting cells have non-polar GaN-based semiconductor layers grown on the non-polar substrate.

A light emitting device includes: a plurality of light emitting elements that emit light to have luminosity depending on the magnitude of a driving signal; a plurality of holding units that are respectively disposed in the plurality of light emitting elements, and respectively hold the driving signal to maintain a magnitude regulated such that the luminosity of the plurality of light emitting elements becomes uniform; and a plurality of supply units that are respectively disposed in the plurality of light emitting elements, and supply the driving signal, which is held by the holding units to have a certain magnitude for a period of time according to a gradation of light to be emitted, to a corresponding light emitting element.

A display apparatus includes a light source and a light guide plate including a light incident surface facing the light source and which receive the light, an opposite surface opposite to the light incident surface and which reflects the light and has an arc shape, connection surfaces at opposing sides of the light incident surface and which connect the light incident surface and the opposite surface, an upper surface connected to the light incident surface, the opposite surface and the connection surfaces and which outputs the light, and a lower surface opposite to the upper surface. The light incident surface of the light guide plate includes a first surface extending in a predetermined direction, and second surfaces inclined from the first surface in an area corresponding to the light source such that an optical recess having a polygonal pyramid shape is defined by the second surfaces.

An optical pickup device includes a two-wavelength composite light source that can emit laser beams for a CD and for a DVD, a light source that can emit a laser beam for a BD, a hologram element and a photo detector. When spots formed on the photo detector by 0 order light generated by diffraction of the three laser beams in the hologram element are first, second and third spots in the descending order of the wavelength of the laser beams, an attachment angle of the two-wavelength composite light source is adjusted so that positions of the third spot and the second spot match substantially each other while a position of the first spot is shifted from the position of the second spot in the same direction as a diffraction direction of +1st diffracted light.

In the present invention, an inner lens of a turn signal lamp is provided with: a lens cut part that inhibits the transmission of light travelling, when seen in a front view, linearly from a substrate toward an outer lens; a projection part that projects toward an LED; and an eave part that extends from the base end side of the projection part inwardly in the vehicle width direction. A harness that is electrically connected with the LED is connected to the substrate through a partial space that is surrounded by the substrate, the projection part, and the eave part.

The invention discloses a photobiological cell culture device, relates to the technical field of photobiological cell culture, and can solve the technical problem of low light utilization rate. The photobiological cell culture device includes a bracket on which at least two culture surfaces arranged at intervals are suspended, and the non-suspended end of the culture surface is connected with an adjustment device for adjusting the orientation of the non-suspended end. The photobiological cell culture device is used for culturing photobiological cells.

The invention discloses a cambered surface machining machine tool based on laser positioning and relates to mechanical equipment. The problem that when an existing cambered surface machining instrument works, the whole instrument easily shakes, machining errors are easy to produce, and the adjustment of the machining instrument is not linear enough during height increase. The cambered surface machining machine tool comprises a grinding machine, a main supporting column, an auxiliary supporting column, a cross beam, a grinding wheel, a first sector plate, a second sector plate, an electric lamp, an optical fiber and an optical fiber laser device, wherein the first sector plate and the second sector plate include optical fibers, optical fiber couplers and optical fiber collimators, the main supporting column, the auxiliary supporting column and a worm wheel and worm lifter can ensure the working stability of the grinding machine, and the worm wheel and worm lifter can make the height adjusting process of the grinding machine more linearized. The first sector plate and the second sector plate can achieve positioning of the lower wheel position of the grinding wheel and can provide auxiliary illumination for the grinding and polishing process, machining work can be also normally performed in a dark environment, and damage caused by severe shaking in the working process can be prevented by adopting an installing mode of the optical fiber laser device.

The invention claims a CMOS APD photoelectric device with low dark current, which belongs to the field of semiconductor photoelectric devices. The device structure includes a P substrate, which also includes a P well on which ions are implanted, and the ion implantation on the P well has one N+ layer and two P+ layers, the N+ layer is a cathode, and the P+ layer is an anode. The heavily doped N+ layer and the lightly doped P well layer form a PN junction, that is, an avalanche region is formed, and an illumination window is set. When the light source enters the device and is absorbed by the light absorption region, photogenerated carriers are generated. Carriers move to the avalanche region under the action of an electric field to participate in multiplication; the two ends of the gap of the P well layer are also doped with STI guard rings and the two sides of the N+ layer are doped with small-sized STI guard rings. The reasonable setting of STI can ensure The reduction of the dark current can also enable the photocurrent to be detected effectively; the photoelectric effect and capacitance are optimized in the design of the device electrode. This design technology is designed from three aspects: PN junction, STI guard ring, and electrode setting to reduce the dark current of the device, ensure that the photocurrent can be detected, and the capacitance is reduced.

The invention discloses a tangential casing built-in aeration photo-bioreactor applicable to micro algae high-efficiency culture. The tangential casing built-in aeration photo-bioreactor comprises a transparent tangential casing, a liquid inlet and outlet structure and an air inlet and outlet structure, wherein the transparent tangential casing comprises a transparent outer tube and a built-in transparent perforated aeration tube; the two ends of the transparent tangential casing are provided with flanges; the transparent outer tube and the built-in transparent perforated aeration tube are sealed through the flanges; one end of the transparent outer tube is provided with a liquid inlet, and the other end of the transparent outer tube is provided with a liquid outlet for feeding culture solution into the transparent outer tube and discharging the culture solution out of the transparent outer tube; one end of the built-in aeration tube is provided with an air inlet tube, and the other end of the built-in aeration tube is provided with a high-pressure exhaust valve; the side wall of the built-in aeration tube is provided with aeration holes; and an exhaust tube is arranged above the transparent outer tube. The tangential casing built-in aeration photo-bioreactor has the advantages of a columnar photo-bioreactor; not only the heat transfer and mass transfer are enhanced but also light-dark cycle is promoted by using aeration turbulent flow; and the pH (Potential of Hydrogen) of the culture solution is dynamically adjusted through CO2 content in ventilation, so that the culture environment of micro algae is improved.