Abstract: An 3D camera module includes a first and a second imaging units, a storage unit, a color separation unit, a main processor unit, an image processing unit, a driving unit, an image combining unit and two OIS units. The first and second imaging units capture images of an object(s) from different angles. The color separation unit separates the images into red, green and blue colors. The main processor unit calculates MTF values of the images and determines a shooting mode of the 3D camera module. The image processing unit processes the images to compensate for blurring of the images caused by being out of focus. The driving unit drives the first and second imaging units to optimum focusing positions according to MTF values. The image combining unit combines the images into a 3D image. The OIS units respectively detect and compensate for shaking of the first and second imaging units.

Abstract: A backlight module of a display provides a backlight controlled by a switch. A first electrochromic film comprises a plurality of first electrochromic devices which may each be powered on to appear white or transparent, and a first power supply module. A second electrochromic film comprises a plurality of second electrochromic devices which may each be powered to appear black or transparent, and a second power supply module. The first electrochromic film is positioned between the backlight module and the second electrochromic film. A controller applies voltages to the first electrochromic devices and to the second electrochromic devices to control appearances of each individual first electrochromic devices and each individual second electrochromic devices.

Abstract: A lens module comprises a barrel, a first lens, a first spacer ring, a second lens having an effective aperture A, a second spacer ring having an inner diameter B, and a third lens having an effective aperture C. The first lens, the first spacer ring, the second lens, the second spacer ring, the third lens and the infrared cut-off filter are coaxially assembled within the barrel, along an axial direction of the barrel in that order. The first spacer ring is sandwiched between the first lens and the second lens, the second spacer ring is sandwiched and located between the second lens and the third lens. The inner diameter B of the second spacer ring is smaller than the effective aperture C of the third lens and larger than the effective aperture A of the second lens, so as to satisfy the condition of C>B>A.

Abstract: A lens module includes a lens barrel, a number of lenses, a number of opaque plates, and a filter glass. The barrel, the lenses, the opaque plates, and the filter glass all are received in the lens barrel. Each opaque plate is sandwiched between two adjacent lenses. Each lens includes an imaging portion and a non-imaging portion surrounding the imaging portion for engaging an inner sidewall of the lens barrel. The filter glass is arranged closer to an image-side of the lens module than the lens and the opaque plates. The projection of one of the opaque plates arranged closest to the filter glass, along the direction of incident light of the lens module, totally covers the non-imaging portion of the lens arranged closest to the filter glass.

Abstract: A piezoelectric actuator for driving a lens unit along an optical axis is disclosed. The piezoelectric actuator includes a fixed member, a movable member movably received in the fixed member, a magnet fixed on the fixed member, a metal sheet fixed on the movable member, a piezoelectric member and a circuit board. The movable member includes a contacting portion. The metal sheet is aligned with the magnetic along a direction substantially perpendicular to the optical axis. The metal sheet is made from a material that can be attracted by the magnet and lighter than the magnet. The piezoelectric member is fixed on the fixed member and contacts on the contacting portion of the movable member for driving the movable member to move along the optical axis. The circuit board provides voltages to the piezoelectric member.

Abstract: An imaging device includes an auto-focusing actuator, an image sensor, and a transparent dust-proofing member. The auto-focusing actuator includes a housing. The housing includes a top surface and an opposite bottom surface, and defines a through hole extending from the top surface to the bottom surface. A number of positioning rods extend from the top surface and cooperatively define a fixing space. The image sensor is mounted on the bottom surface of the housing and aligned with the through hole. The transparent dust-proofing member is mounted in the fixing space and seals the through hole.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer.

Abstract: An image lens includes a first lens and a second lens. The first lens includes a first and a second surfaces. The second lens includes a third and a fourth surfaces. The image lens satisfies: FB/TTL>0.23; G1R1/F1>1.93; Z/Y>0.27; Z/T<0.89; G2R1/F2<G2R2/F2<G1R2/F2, FB is a distance between the fourth surface and the image plane, TTL is a total length of the image lens, Z is a distance from a central point of the fourth surface to the fourth surface along the optical axis, Y is a distance from the central point of the fourth surface to an edge of the fourth surface along a direction perpendicular to the optical axis, T is a thickness of the second lens, G2R1, G2R2 and G1R2 are curvature radiuses of the third, fourth and second surfaces, F2 is a focal length of the second lens.

Abstract: A voice coil motor includes a lens retainer, a wire, and an elastic electrode member. The lens retainer includes an end portion. The wire wraps around the lens retainer and includes a first end and a second end. The elastic electrode member is metal and is mounted to the end portion. The elastic member includes a first elastic metal sheet and a second elastic metal sheet. The first elastic metal sheet includes a first electrode. The second elastic plate is physically separated from the first elastic sheet and includes a second electrode. The first end and the second end are respectively soldered to the first electrode and the second electrode.

Abstract: A lens system includes a first, a second and a third lenses, and an image plane. The lens system satisfies the formulae: FB/TTL>0.30; G1R2/F1>19.54; and D1/D2<1.62. FB denotes a distance between a nearest point of an image-side surface of the third lens relative to the image plane and the image plane, TTL denotes the total track length of the lens system, G1R2 denotes the curvature radius of the vertex of an image-side surface of the first lens, F1 denotes the focal length of the first lens. D1 denotes an orthogonal distance between a farthest point of an image-side surface of the second lens relative to an optical axis of the lens system and a central point of the image-side surface of the second lens, along a direction substantially perpendicular to the optical axis. D2 denotes an orthogonal distance between the farthest point and the central point along the optical axis.

Abstract: A lens system includes a first to fifth lenses. The second and fifth lenses have negative refractive power and the others have positive refractive power. The lens system satisfies: D/TTL>1.05; Z/Y>0; G3R1/F3>G1R1/F1>0; G1R2/F1<G3R2/F3<0; and G5R1/F5<G5R2/F5<0, where D is the diameter of the optical images of the lens system, TTL is the total length of the lens system, Z is the distance between the outer periphery of an image-side surface of the fourth lens to the center of an object-side surface of the fourth lens, Y is the distance between the outer periphery of the fourth lens to the center of the fourth lens, G1R1, G2R2, G3R1, G3R2, G5R1 G5R2 are the radii of curvature of the object-side and image-side surfaces of the first, third, fifth lenses, respectively, and F1, F3, F5 are focal lengths of the first, third, fifth lenses, respectively.

Abstract: A lens system includes a first lens with negative refraction power, and a second lens with positive refraction power. The first lens includes a surface facing the image side having an optical portion. The lens system satisfies the formulas: (1) Y/Z<1.10;(2) G1R1/F1<?3.10; and (3) G2R2/F2>1.49, wherein Y is a distance between an end point of the optical portion and a center point of the optical portion along a direction perpendicular an optical axis, Z is a distance between the end point of the optical portion and the center point of the optical portion along the optical axis, F1 and F2 are the focal lengths of the first and second lenses, respectively, G1R1 and G2R2 respectively denote the radius of curvatures of a surface of the first lens facing the object side and another surface of the second lens facing the image side.

Abstract: An image stabilizer includes a circuit board, a stationary member secured on the circuit board and defines a first receiving space and a first central axis, a moveable member received in the first receiving space, a driving assembly including a first magnetic member secured to the stationary member and a second magnetic member secured to the moveable member, a resilient assembly interconnecting the stationary member and the moveable member, and a photo-detector fixed on the circuit board and facing the moveable member. The driving assembly drives the moveable member to rotate about a first axis and a second axis relative to the stationary member through magnetic interaction between the first and second magnetic members. The resilient assembly counter-rotates the moveable member about the first axis and the second axis relative to the stationary member. The photo-detector detects vibration or movement of the moveable member relative to the stationary member.