Abstract:
An optical sensor, an optical sensor array, and an apparatus and method for measuring a bio-signal are provided. The optical sensor includes a photodetector, and a light source disposed on the photodetector. The optical sensor is configured to operate the light source in a light source mode, and operate the photodetector in a photodetector mode, based on a control signal
Abstract:
Disclosed herein is an image forming apparatus having a structure improved such that a user easily opens and closes a printing media cassette. The image forming apparatus includes an apparatus body, a printing media cassette to receive printing media, the printing media cassette being movably coupled to the apparatus body, and at least one lever movably disposed in the apparatus body, the lever contacting the printing media cassette to pull the printing media cassette into the apparatus body and then being separated from the printing media cassette when the printing media cassette is closed.
Abstract:
A light emitting device package includes: a plurality of light emitting chips configured to emit respective wavelength lights, each chip comprising electrodes at a bottom of the chip to form a flip-chip structure; a plurality of wirings directly connected to the electrodes of the chips, respectively; a plurality of electrode pads disposed below the chips and directly connected to the wirings, respectively; and a molding member integrally formed in a single layer structure to cover upper surfaces and side surfaces of the chips, and including a translucent material having a predetermined transmittance, wherein the wirings are disposed below a lower surface of the molding member.
Abstract:
A printing apparatus includes, an outer jig comprising an outer wall portion and a recessed portion, an inner jig disposed in the recessed portion and forming a hole between the outer wall portion and the inner jig, and a print head comprising a pad portion configured to overlap the hole, wherein the outer jig comprises an outer coupling portion disposed adjacent to a first surface of the outer jig facing the inner jig, the inner jig comprises an inner coupling portion disposed adjacent to a second surface of the inner jig facing the outer jig, and the outer jig and the inner jig are detachable from each other by detachment of the outer coupling portion and the inner coupling portion from each other.
Abstract:
A nanostructure semiconductor light emitting device includes a base layer, an insulating layer, and a plurality of light emitting nanostructures. The base layer includes a first conductivity type semiconductor. The insulating layer is disposed on the base layer and has a plurality of openings through which regions of the base layer are exposed. The light emitting nanostructures are respectively disposed on the exposed regions of the base layer and include a plurality of nanocores having a first conductivity type semiconductor and having side surfaces provided as the same crystal planes. The light emitting nanostructures include an active layer and a second conductivity type semiconductor layer sequentially disposed on surfaces of the nanocores. Upper surfaces of the nanocores are provided as portions of upper surfaces of the light emitting nanostructures, and the upper surfaces of the light emitting nanostructures are substantially planar with each other.
Abstract:
Provide is a lens which outputs light, emitted by a plurality of light sources, with uniform light distribution. The lens includes a lens body having a first surface which is flat and has an incident hole formed therein, and a second surface which is convex and opposite the first surface; and a plurality of incident surfaces which are recessed from the incident hole toward the second surface, each of the plurality of incident surfaces corresponding to a light source of the plurality of light.
Abstract:
An optical measuring device including a light source, a light beam path adjuster, a light detector and a controller is provided. The light source may emit light toward an object in a predetermined progress direction. The light beam path adjuster may be disposed between the light source and the object and may change a progress path of the light emitted from the light source. The light detector may receive the light that is reflected from the object after passing through the light beam path adjuster. The controller may compare a first effective beam path length of the reflected light that the light detector receives with a predetermined target beam path length and control a refractive angle of the light beam path adjuster based on a beam path length difference between the first effective beam path length and the predetermined target beam path length.
Abstract:
A spectrometer according to one aspect may include a plurality of light sources configured to emit light to a target object, a plurality of wavelength controllers installed on one surface of each of the plurality of light sources and configured to adjust a peak wavelength band of each of the light sources, and a detection unit configured to detect light returning from the target object.
Abstract:
An optical measuring device including a light source, a light beam path adjuster, a light detector and a controller is provided. The light source may emit light toward an object in a predetermined progress direction. The light beam path adjuster may be disposed between the light source and the object and may change a progress path of the light emitted from the light source. The light detector may receive the light that is reflected from the object after passing through the light beam path adjuster. The controller may compare a first effective beam path length of the reflected light that the light detector receives with a predetermined target beam path length and control a refractive angle of the light beam path adjuster based on a beam path length difference between the first effective beam path length and the predetermined target beam path length.
Abstract:
A filament type light emitting diode (LED) light source includes a plurality of LED modules, a coupler, and a common connection portion. The LED modules are in a polygonal prism structure and emit white light having different color temperatures or light of different wavelengths. Each LED module having a bar shape at a respective side surface of the polygonal prism structure and includes a first connection electrode and a second connection electrode. The coupler couples the LED modules to maintain the polygonal prism structure. The common connection portion is at one end of the polygonal prism structure and is commonly connected to the second connection electrode of each of the LED modules.