Samsung Electro-mechanics Co., Ltd.

Samusng Electro-mechanics Co., Ltd.

Dae Hyun Jeong

Jong In Lee

Jong Ki Kim

Ho Sik Yoo

Byung Woo Kang

Jung Ho Ryu

Byung Gi An

Hoon Do Heo

Oh Byoung Kwon

Shin Young Cheong

Je Hyun Bang

Gab Yong Kim

Oui Serg Kim

Hyung Min Choi

Yong Joo Jo

Young Bok Yoon

Jong Woo Kim

Nam Ki Park

Jae Kyung Kim

Bo Sung Seo

Dong Yeon Shin

Young Hwan Kwon

Burhanettin Koc

Seung Hyeon Jeong

Jun Sup Shin

Ick Chan Shim

Won Ki Park

Sung Won Min

Jung Kyun Cho

Ik Jin Jang

Kyung Hoon Choi

Kwang Chun Jung

Il Woo Seok

Seok Jo Hwang

Jong Yong Park

Dae Wook Kim

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398<ZS1/ZS2<1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

Portable electronic device, optical imaging system, and lens assembly

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398&#x3c;ZS1/ZS2&#x3c;1.36318, where ZS1 is a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZS2 is a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

A camera module includes a lens module, a first frame accommodating the lens module, a second frame accommodating the first frame, and a housing accommodating the second frame. The lens module and the first frame are rotatable about a first axis, with respect to the second frame, perpendicular to an optical axis. The lens module, the first frame, and the second frame are rotatable about a second axis, with respect to the housing, perpendicular to both the optical axis and the first axis. A first ball member is disposed between the first frame and the second frame and elastically supported in a direction of the first axis, and a second ball member is disposed between the second frame and the housing and elastically supported in a direction of the second axis.

Camera module and portable electronic device including the same

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side, wherein the first to fifth lenses are spaced apart from each other by predetermined distances along an optical axis in a paraxial region, the first lens and the second lens each have a non-circular shape when viewed in an optical axis direction, and the optical imaging system satisfies 0.62398&#x3c;ZSZS&#x3c;1.36318, where ZSis a ratio of an area of an object-side surface of the first lens to a distance from the object-side surface of the first lens to an imaging plane of an image sensor, and ZSis a ratio of an area of an object-side surface of the second lens to a distance from the object-side surface of the second lens to the imaging plane of the image sensor.

A camera module includes a lens module; a first frame accommodating the lens module; a second frame accommodating the first frame; a third frame accommodating the second frame; and a housing accommodating the third frame. The lens module and the first frame are configured to rotate with respect to the second frame around an optical axis. The lens module, the first frame and the second frame are configured to rotate with respect to the third frame around a first axis that is perpendicular to the optical axis. The lens module, the first frame, the second frame, and the third frame are configured to rotate with respect to the housing around a second axis that is perpendicular to both the optical axis and the first axis.

Camera module having rotatable lens module and frames and portable electronic device including the same

A dual camera module includes a single housing accommodating a plurality of lens modules, a first actuator configured to move one of the plurality of lens modules in an optical axis direction, and a plurality of printed circuit boards attached to a lower portion of the single housing. One printed circuit board corresponding to a lens module moved by the first actuator, among the plurality of printed circuit boards, is disposed to be lower than the other printed circuit boards in the optical axis direction.

Dual camera module and portable electronic device

A camera module includes: a housing configured to accommodate a lens module; and an actuator configured to move the lens module in an optical axis direction, and including a magnet disposed in the lens module and a coil facing the magnet, wherein a convex portion and a first step difference portion stepped from the convex portion are disposed on one surface of the lens module, wherein the first step difference portion is offset to one side of the lens module, with respect to the one surface of the lens module, and wherein the magnet is disposed in the first step difference portion.

Camera module

A camera module actuator is described including a magnet, a coil disposed to face the magnet, and a driver configured to apply a driving signal to the coil to move the magnet. The camera module actuator also includes a detector configured to detect a position of the magnet from a change in inductance of the coil, based on the movement of the magnet.

Camera module actuator

An actuator and a camera module including the same are provided. The actuator driving apparatus includes a detector configured to apply a reference signal to a driving coil of an actuator and detect a coil current flowing in the driving coil, a calculator configured to determine a position of a lens carrier based on the coil current, and a driver configured to drive the actuator based on the position of the lens carrier and a position control signal.

Actuator driving apparatus and camera module including the same

There is provided a flat type piezoelectric ultrasonic motor for generating a rotation force to a rotor by ultrasonic vibrations. In the piezoelectric ultrasonic motor, a vibrator is formed of elastic material at a given size, a plurality of piezoelectric plates are attached on the vibrator, a rotor is drivingly connected to the vibrator thereby to be rotated, and a power source unit applies driving voltages to the piezoelectric plates. The piezoelectric plates are arranged on quartered surface areas of the vibrator in such a way that longitudinal axes of neighboring piezoelectric plates form a given angle therebetween and opposing piezoelectric plates have opposite polarizations, and the power source unit applies alternating driving voltages to the piezoelectric plates thereby to make the rotor rotated, thereby making it possible to simplify the piezoelectric plates' shape, minimize its size and enhance its driving efficiency.

Flat type piezoelectric ultrasonic motor

Provided is a compact lens module which enables zoom and auto-focus functions even in a small lens module by providing a lens carrying structure using a supersonic driving unit. A lens unit is positioned in a case and has at least one lens. A carrying member is rotatably connected in the case and connected to the lens unit so that the lens unit may move forward and backward. In addition, a driving unit is mounted in the case for transferring a driving force to the carrying member so as to move the lens unit by repeatedly contacting and non-contacting with the carrying member.

Compact lens module

The present invention relates to a lens driving device, more particularly, capable of adjusting an effective focal length determined by the relative distance of lenses in an optical device having a zooming function. In the lens driving device, a barrel unit has an internal space for containing a lens therein and a guide slot for allowing forward and backward movement of the lens through rotation of the barrel unit. A ring-shaped piezoelectric actuator unit is arranged adjacent to the barrel unit for being contracted or expanded radially in response to an external input signal. A drive member is mounted on the piezoelectric actuator unit and having a plurality of segments projected toward the barrel unit to contact the same.

Lens driving device

A non-contact driving motor capable of keeping its non-contact state irrespective of its start-up or stoppage condition, thereby obtaining a semi-permanent durability. The motor including a housing, a sleeve extending upwardly from the housing, a stator assembly fitted around the sleeve, a vertical shaft rotatably inserted in the sleeve, a rotor assembly including a rotor case coupled to an upper end of the shaft, and an annular driving magnet attached to an outer peripheral end of the rotor case in such a fashion that it faces the stator assembly, an annular first magnet attached to an inner peripheral surface of the sleeve at an upper end of the sleeve, an annular second magnet attached to an outer peripheral surface of the shaft in such a fashion that it faces the first magnet in a horizontal direction, a disc-shaped third magnet fitted around a lower end of the shaft, a disc-shaped fourth magnet attached to the inner peripheral surface of the sleeve above the third magnet in such a fashion that it faces the third magnet in a vertical direction, and a disc-shaped fifth magnet attached to a cap covering the lower end of the sleeve beneath the third magnet in such a fashion that it faces the third magnet in a vertical direction.

Non-contact driving motor

A method for surface processing of sintered oilless bearing and an apparatus thereof are disclosed by which method the efficiency of covering the pores and the surface roughness of protuberance that is nonporous surface may be improved by means of surface processing of inner diameter surface at time of sizing process using a correcting rod where many correction grooves have been formed on its top part. The invention has features that it may improve the efficiency of covering the pores formed on surface and the surface roughness of sintered oilless bearing's inner diameter surface contacting the shaft, by way of passing the bearing through many correction grooves formed in longitudinal direction on outer circumferential surface of protuberance correction part which is upper part of said correcting rod while at the same time the bearing sintered after compression molding is sized using a sizing device composed of correcting rod and upper and lower punches and that the invention precludes abrasion by reducing the force of friction with shaft in motor applying such sintered oilless bearing so that motor performance reliability may be substantially enhanced.

Growing community of inventors

Suwon-si, South Korea

Dae Hyun Jeong