Samsung Electro-mechanics Co., Ltd.

Seok Cheon Lee

Cheong Hee Lee

In Cheol Chang

Hye Ran Oh

Young Su Jin

Sung Hyun Kim

Jung Hyun Park

Ho Sik You

Ho Seop Jeong

Sang Hyuck Lee

Jong Ho Ahn

A camera module includes a housing, a carrier, a frame, a lens holder, an autofocusing (AF) ball bearing, and an optical image stabilization (OIS) ball bearing. The carrier is coupled to the housing and configured to move in an optical axis direction. The frame is coupled to the carrier and configured to move in a first axis direction, perpendicular to the optical axis direction. The lens holder is coupled to the frame and configured to move in a second axis direction, perpendicular to the optical axis and the first axis. The AF ball bearing is disposed between the housing and the carrier. The OIS ball bearing is disposed on either one or both of the carrier and the frame, and the frame and the lens holder. Either one or both of the AF ball bearing and the OIS ball bearing have an elastic modulus of 20 GPa or less.

Camera module

The present invention provides a method for manufacturing a lens used in a camera module including the steps of: preparing a preform for manufacturing a lens; forming a front lens on a front surface of the preform; and forming an array lens by forming a rear lens on a rear surface of the preform during the formation of the front lens.

Method for manufacturing lens used in camera module

There is provided an imaging optical system including: a first lens element having a convex object-side surface; a second lens element having an object-side planar surface in contact with an image-side surface of the first lens element and an image-side planar surface; and a third lens element having an object-side surface in contact with an image-side surface of the second lens element, wherein the object-side surface of the first lens element and an image-side surface of the third lens element are aspherical, and the third lens element has a point of inflection formed within an effective aperture thereof such that the image-side surface is convexed toward an image plane at a central portion to have positive refractive power and concaved toward the image plane at a peripheral portion to have negative refractive power.

Subminiature imaging optical system

An optical system is mounted in a mobile communication terminal and a personal digital assistant (PDA) for a monitoring camera and a digital camera. The optical system includes: a first optical element formed in a meniscus shape entirely convex toward an object and having a positive refractive power; and a second optical element having an object-side surface convex toward the object and an image-side surface formed of a plane, wherein the second optical element includes: a fourth optical element having an object-side surface entirety convex toward the object on the optical axis; and a fifth optical element having an object-side surface in contact with an image-side surface of the fourth optical element, and an image-side surface and an object-side surface formed of planes respectively.

Optical system

In a camera module having an array lens, a first lens group has at least two lenses. A second lens group has a plurality of lenses corresponding to the lenses of the first lens group, the second lens group stacked below the first lens group and interposing a spacer part therebetween. An image sensor has an imaging region where light passing through the first and second lens groups is imaged. Also, a shielding unit shields portions excluding apertures of the lenses of the first and second lens groups, the shielding unit disposed between the first and second lens groups. The camera module has a lower optical system along an optical axis for smaller size, keeps light refracted from an adjacent lens from affecting an image, blocks leakage of light for imaging and increases definition of the image through signal processing.

Growing community of inventors

Gyunggi-do, South Korea

Seok Cheon Lee