Abstract: A lamp for a vehicle includes a light source unit; a first optical member in which a plurality of incident lenses are arranged on an incident surface thereof; a second optical member in which a plurality of exit lenses are arranged on an exit surface thereof; and a shield unit including a plurality of shields disposed between the plurality of incident lenses and the plurality of exit lenses. The incident surface of the first optical member and the exit surface of the second optical member are inclined, and an incident surface of a first incident lens among the plurality of incident lenses and an exit surface of a first exit lens corresponding to the first incident lens among the plurality of exit lenses are formed asymmetrically with respect to a reference line drawn to pass through a focal point between the first incident lens and the first exit lens.

Abstract: An air conditioner and a control method thereof perform cooling through an outlet if room temperature or room humidity is high to reduce the room temperature or the room humidity, and closing the outlet to perform cooling at low velocity through an outlet hole if room temperature or room humidity reaches a predetermined value so that a user can little feel the wind velocity of cooling of the air conditioner, while maintaining indoor space at pleasant temperature or humidity. By performing cooling at low velocity through the outlet hole formed in the lower portion of the air conditioner, it is possible to cool the lower area of indoor space at pleasant temperature when a user is asleep.

Abstract: An air conditioner and a method for controlling the same are disclosed. The air conditioner includes a compressor; an indoor fan configured to blow an indoor air; and a controller configured to change and control a revolutions per minute (RPM) of the indoor fan to a predetermined time when the compressor is off.

Abstract: An acoustic wave resonator includes a resonating part disposed on and spaced apart from a substrate by a cavity, the resonating part including a membrane layer, a first electrode, a piezoelectric layer, and a second electrode that are sequentially stacked. 0 ???Mg?170 ? may be satisfied, ?Mg being a difference between a maximum thickness and a minimum thickness of the membrane layer disposed in the cavity.

Abstract: An acoustic wave resonator includes a resonating part disposed on and spaced apart from a substrate by a cavity, the resonating part including a membrane layer, a first electrode, a piezoelectric layer, and a second electrode that are sequentially stacked. 0 ???Mg?170 ? may be satisfied, ?Mg being a difference between a maximum thickness and a minimum thickness of the membrane layer disposed in the cavity.

Abstract: A bulk acoustic resonator includes: a substrate including an upper surface on which a substrate protection layer is disposed; and a membrane layer forming a cavity together with the substrate, wherein a thickness deviation of either one or both of the substrate protection layer and the membrane layer is 170 ? or less.

Abstract: An optical system is provided. The optical system includes a first lens and a second lens disposed in front of the first lens. In particular, the second lens has a concave incidence surface, a curvature ratio between the first lens and the second lens is in a range of about 1.2 to 3.0, and the optical system receives a light emitted by a light-emitting unit in a range of about 60° or more.

Abstract: An acoustic wave resonator includes a resonating part disposed on and spaced apart from a substrate by a cavity, the resonating part including a membrane layer, a first electrode, a piezoelectric layer, and a second electrode that are sequentially stacked. 0 ???Mg?170 ? may be satisfied, ?Mg being a difference between a maximum thickness and a minimum thickness of the membrane layer disposed in the cavity.

Abstract: A bulk acoustic wave resonator device includes: a substrate; a lower electrode disposed on the substrate; a piezoelectric layer disposed over a portion of the lower electrode; an upper electrode disposed on the piezoelectric layer; and a shape control layer covering an edge of a cavity disposed between the substrate and the lower electrode, wherein tensile stress is applied to the shape control layer during formation of the shape control layer.

Abstract: An acoustic resonator includes a substrate, and a resonant portion comprising a center portion in which a first electrode, a piezoelectric layer and a second electrode are sequentially laminated on the substrate, and an extending portion disposed along a periphery of the center portion, wherein the resonant portion is configured to have an asymmetrical polygonal plane, an insertion layer is disposed below the piezoelectric layer in the extending portion, and the piezoelectric layer is configured to have a top surface which is raised to conform to a shape of the insertion layer, and the insertion layer is configured to have an asymmetrical polygonal shape corresponding to a shape of the extending portion.

Abstract: A bulk acoustic resonator includes: a substrate including an upper surface on which a substrate protection layer is disposed; and a membrane layer forming a cavity together with the substrate, wherein a thickness deviation of either one or both of the substrate protection layer and the membrane layer is 170 ? or less.

Abstract: Provided is to a vehicle lamp capable of ensuring a high sense of unity when a plurality of lamp units are arranged based on a shape of an outer optical member. The vehicle lamp includes a light source unit for generating light, a first optical member in which a plurality of incident optics are disposed on an incident surface, a second optical member in which a plurality of emitting optics are disposed, and a shield unit disposed between the plurality of incident optics and the plurality of emitting optics. In particular, a first side of the incident surface and the emitting surface is formed to be closer to the light source unit than a second side of the incident surface and the emitting surface to allow the incident surface and the emitting surface to be inclined.

Abstract: Provided is to a vehicle lamp capable of ensuring a high sense of unity when a plurality of lamp units are arranged based on a shape of an outer optical member. The vehicle lamp includes a light source unit for generating light, a first optical member in which a plurality of incident optics are disposed on an incident surface, a second optical member in which a plurality of emitting optics are disposed, and a shield unit disposed between the plurality of incident optics and the plurality of emitting optics. In particular, a first side of the incident surface and the emitting surface is formed to be closer to the light source unit than a second side of the incident surface and the emitting surface to allow the incident surface and the emitting surface to be inclined.

Abstract: An acoustic resonator includes: a resonating unit including a resonating unit including a piezoelectric layer and first and second electrodes disposed on a lower side and an upper side of the piezoelectric layer, respectively; a substrate disposed on a lower side of the resonating unit; a support unit providing a cavity between the substrate and the resonating unit; and an intermediate metal layer separated from the second electrode and disposed in the resonating unit such that at least a portion thereof is surrounded by the piezoelectric layer and the second electrode.

Abstract: An acoustic resonator includes: a resonating unit including a piezoelectric layer, a first electrode disposed on a lower side of the piezoelectric layer, and a second electrode disposed on an upper side of the piezoelectric layer; a substrate disposed below the resonating unit; a support unit forming a cavity between the substrate and the resonating unit; and a pillar extending through the cavity and connecting the resonating unit to the substrate. The resonating unit further includes a first insertion layer disposed above the pillar.

Abstract: A lamp for a vehicle includes a light source unit that generates light and an optical unit for guiding the light. The light source unit includes a plurality of light sources arranged in a matrix shape, and the optical unit includes a plurality of optical members disposed in a traveling direction of the light. The light generated from the plurality of light sources passes through the optical unit to form a beam pattern.

Abstract: Disclosed herein are an air conditioner and a method for controlling the same. The air conditioner includes an indoor temperature measuring unit that measures an indoor air temperature, an outdoor temperature measuring unit that measures an outdoor air temperature, a heat exchanger temperature measuring unit that measures an inlet temperature of one or more indoor heat exchangers and an outlet temperature thereof, and a processor that determines a reference superheat degree using the indoor air temperature and the outdoor air temperature, obtains a difference between the inlet temperature and the outlet temperature of the one or more indoor heat exchangers, compares the difference between the inlet temperature and the outlet temperature of the one or more indoor heat exchangers and the reference superheat degree, and determines whether a circulation amount of a refrigerant is normal according to a result of the comparison.

Abstract: A bulk acoustic wave resonator includes a substrate including a cavity groove, a membrane layer disposed above the substrate and including a convex portion. And a lower electrode including a portion thereof disposed on the convex portion. The bulk acoustic wave resonator also includes a piezoelectric layer configured so that a portion of the piezoelectric layer is disposed above the convex portion, and an upper electrode disposed on the piezoelectric layer. A first space formed by the cavity groove and a second space formed by the convex portion form a cavity, the cavity groove is disposed below an active region, and the convex portion comprises an inclined surface disposed outside of the cavity groove.

Abstract: An acoustic resonator includes a substrate, and a resonant portion comprising a center portion in which a first electrode, a piezoelectric layer and a second electrode are sequentially laminated on the substrate, and an extending portion disposed along a periphery of the center portion, wherein the resonant portion is configured to have an asymmetrical polygonal plane, an insertion layer is disposed below the piezoelectric layer in the extending portion, and the piezoelectric layer is configured to have a top surface which is raised to conform to a shape of the insertion layer, and the insertion layer is configured to have an asymmetrical polygonal shape corresponding to a shape of the extending portion.

Abstract: A bulk acoustic wave resonator includes: a substrate; a first electrode disposed above the substrate; a piezoelectric layer disposed above at least a portion of the first electrode; and a second electrode disposed above at least a portion of the piezoelectric layer. A first gap is formed between the piezoelectric layer and one of the first and second electrodes. The first gap includes a first inner gap disposed in an active area of the bulk acoustic wave resonator, and having a first spacing distance between the piezoelectric layer and the one of the first and second electrodes, and a first outer gap disposed outwardly of the active area and having a second spacing distance, different than the first spacing distance, between the piezoelectric layer and the one of the first and second electrodes.