Abstract: An electronic device including an image sensor, a phase difference autofocus (AF) sensor module, a reflection-type infrared (IR) cut-off filter, and an absorption-type IR cut-off filter, wherein the reflection-type IR cut-off filter is disposed on an optical axis to reflect a first portion of light incident thereon through an imaging lens to the phase difference AF sensor module and to allow a second portion of the light to be transmitted therethrough, the absorption-type IR cut-off filter is disposed between the image sensor and the reflection-type IR cut-off filter on the optical axis to filter the second portion of the light transmitted through the reflection-type IR cut-off filter, and the phase difference AF sensor module performs auto-focusing on a subject using the first portion of the light reflected from the reflection-type IR cut-off filter.

Abstract: Disclosed herein are an autofocus system for electronic devices and an electronic device using the same. An electronic device includes an image sensor, a phase difference autofocus (AF) sensor module, a reflection-type infrared (IR) cut-off filter, and an absorption-type IR cut-off filter. The reflection-type IR cut-off filter is disposed on an optical axis to reflect a first portion of light incident thereon through an imaging lens to the phase difference AF sensor module and to allow a second portion of the light to be transmitted therethrough. The absorption-type IR cut-off filter is disposed between the image sensor and the reflection-type IR cut-off filter on the optical axis to filter the second portion of the light transmitted through the reflection-type IR cut-off filter. The phase difference AF sensor module performs auto-focusing on a subject using the first portion of the light reflected from the reflection-type IR cut-off filter.

Abstract: A motor for a compressor and a hermetic compressor having the same are provided. An aluminum coil is used in the motor for the compressor, and sectional areas of main and sub slot portions and numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor may drastically be reduced. Also, as the aluminum coil of the motor for the compressor is coupled to a lead wire in a welding manner, breaking of the aluminum coil, which may occur when coupling the aluminum coil to the lead wire, may be prevented, resulting in improvement of assembly reliability of the reciprocating compressor.

Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil cheaper than a copper coil is used in the motor for the compressor, a ratio between the aluminum coil and a stator core is set, and sectional areas of main and sub slot portions of the stator core and the numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor can drastically be reduced and efficiencies thereof can be improved.

Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil cheaper than a copper coil is used in the motor for the compressor, to thusly reduce a fabricating cost. Also, a ratio of a height of end coil of a coil to an inner diameter of a stator is appropriately designed or a ratio of an entire area of slot portions to the inner diameter of the stator is appropriately designed, and simultaneously a ratio of the inner diameter of the stator to a width of the tooth portion is appropriately designed, so as to previously prevent a deterioration of damping effect, increase in noise, lowering of efficiency, reduction of driven torque, all caused due to the use of the aluminum coil.

Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil cheaper than a copper coil is used in the motor for the compressor, to thusly reduce a fabricating cost. Also, a ratio of a height of end coil of a coil to an inner diameter of a stator is appropriately designed or a ratio of an entire area of slot portions to the inner diameter of the stator is appropriately designed, and simultaneously a ratio of the inner diameter of the stator to a width of the tooth portion is appropriately designed, so as to previously prevent a deterioration of damping effect, increase in noise, lowering of efficiency, reduction of driven torque, all caused due to the use of the aluminum coil.

Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil is used in the motor for the compressor, and sectional areas of main and sub slot portions and the numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor can drastically be reduced. Also, as the aluminum coil of the motor for the compressor is coupled to a lead wire in a welding manner, the breaking of the aluminum coil, which may occur when coupling the aluminum coil to the lead wire can be prevented, resulting in improvement of assembly reliability of the reciprocating compressor.

Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil cheaper than a copper coil is used in the motor for the compressor, a ratio between the aluminum coil and a stator core is set, and sectional areas of main and sub slot portions of the stator core and the numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor can drastically be reduced and efficiencies thereof can be improved.