Abstract: A zoom lens of the present invention includes a first lens group, a second lens group, an aperture, a third lens group, a fourth lens group, and an image surface in sequence along an optical axis from an object side to an image side. The first lens group has positive refractive power, and includes at least two lenses. The second lens group has negative refractive power, and includes three lenses. The third lens group has positive refractive power, and includes at least two lenses. The fourth lens group has positive refractive power. The zoom lens is switched to a telephoto mode from a wide-angle mode by moving the first lens group toward the object side, moving the second lens group toward the image side, and moving the third lens group toward the object side.

Abstract: The disclosure discloses a triple-band antenna including a feed line, a first radiating body, a second radiating body and a grounding sheet. The first radiating body is a rectangular sheet. One end of the first radiating body is electrically connected with the end of the feed line. The second radiating body includes three parallel bar shape sheets extending from the first radiating body and surrounded by the first radiating body, and both share the feed line. The grounding sheet is disposed beside the feed line. The first radiating body and the second radiating body of the triple-band antenna generate three resonance frequencies according to the radio frequency received by the feed line to allow the triple-band antenna work under three different operating frequencies.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fifth lens group respectively having positive, negative, positive, positive, and positive refractive power. When zooming from a wide-angle end to a telephoto end, the first, third and fourth lens groups move to the object side and the second lens group moves to the image side, whereby a spacing between the first and second lens groups and a spacing between the fourth and fifth lens groups are both increased and a spacing between the second and third lens groups is decreased. The following condition is satisfied: 0 < ? M ? ? G ? ? 2 · Y f ? ? 2 ? ? 0.05 where MG2 represents the movement range of the second lens group when zooming from the wide-angle end to the telephoto end, Y represents a maximum diagonal length of the image plane, and f2 represents the focal length of the second lens group.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fourth lens groups respectively having positive, negative, positive, and positive refractive powers. When zooming from a wide-angle end to a telephoto end, the first and third lens groups move to the object side and the second lens group moves to the image side, whereby a spacing between the first and second lens groups and a spacing between the third and fourth lens groups are increased and a spacing between the second and third lens groups is decreased. The fourth lens group moves for focusing. The following condition is satisfied: 0 < ? MG ? ? 2 · Y f ? ? 2 ? ? 2.3 where MG2 represents the movement range of the second lens group when zooming from the wide-angle end to the telephoto end, Y represents a maximum diagonal length of the image plane, and f2 represents the focal length of the second lens group.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fifth lens groups respectively having negative, positive, negative, positive, and positive refractive power. During zooming from a wide-angle end to a telephoto end, the second and third lens groups are moved independently toward the object side with spacing therebetween increased and that between the first and second lens groups decreased. The following condition is satisfied 1.05?(fW·LW)/(fT·Y)?1.53, wherein fW and fT are focal lengths of the zoom lens system at the wide-angle end and the telephoto end, Y represents a maximum diagonal length of an image plane, and LW represents a total length of the zoom lens system at the wide-angle end which is defined as a distance from the vertex of a first surface of the first lens on the object side to the image plane.

Abstract: A zoom lens system includes a first lens group, a second lens group, a third lens group, a fourth lens group, and an aperture stop, from an object side to an image side on an optical axis. The zoom lens system satisfies the following condition: Y × L 2 × f W × f T ? 1.06 where Y is a maximum diagonal length of the image side 170, L is a total track length of the zoom lens system 100, fW is a focal length of the zoom lens system 100 at a wide status, fT is a focal length of the zoom lens system 100 at a telephoto status.

Abstract: The disclosure discloses a triple-band antenna including a feed line, a first radiating body, a second radiating body and a grounding sheet. The first radiating body is a rectangular sheet. One end of the first radiating body is electrically connected with the end of the feed line. The second radiating body includes three parallel bar shape sheets extending from the first radiating body and surrounded by the first radiating body, and both share the feed line. The grounding sheet is disposed beside the feed line. The first radiating body and the second radiating body of the triple-band antenna generate three resonance frequencies according to the radio frequency received by the feed line to allow the triple-band antenna work under three different operating frequencies.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fifth lens group respectively having positive, negative, positive, positive, and positive refractive power. When zooming from a wide-angle end to a telephoto end, the first, third and fourth lens groups move to the object side and the second lens group moves to the image side, whereby a spacing between the first and second lens groups and a spacing between the fourth and fifth lens groups are both increased and a spacing between the second and third lens groups is decreased. The following condition is satisfied: 0 < ? M ? ? G ? ? 2 · Y f ? ? 2 ? ? 0.05 where MG2 represents the movement range of the second lens group when zooming from the wide-angle end to the telephoto end, Y represents a maximum diagonal length of the image plane, and f2 represents the focal length of the second lens group.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fourth lens groups respectively having positive, negative, positive, and positive refractive powers. When zooming from a wide-angle end to a telephoto end, the first and third lens groups move to the object side and the second lens group moves to the image side, whereby a spacing between the first and second lens groups and a spacing between the third and fourth lens groups are increased and a spacing between the second and third lens groups is decreased. The fourth lens group moves for focusing. The following condition is satisfied: 0 < ? MG ? ? 2 · Y f ? ? 2 ? ? 2.3 where MG2 represents the movement range of the second lens group when zooming from the wide-angle end to the telephoto end, Y represents a maximum diagonal length of the image plane, and f2 represents the focal length of the second lens group.

Abstract: A zoom lens system is disclosed which includes a first lens group with negative optical power, a second lens group with positive optical power, and a third lens group with positive optical power, arranged in that order from an object side to an image side. The zoom lens system performs zooming by changing distances between the lens groups. The first lens group includes at least two negative lenses, and one of the negative lenses is adjacent to the second lens group and satisfies the following criteria 0.08 < ? R ? ? 1 R ? ? 2 ? < 0.52 , where R1 is the curvature radius of the first surface facing toward the object side, and R2 is the curvature radius of the second surface facing toward the image side.

Abstract: A zoom lens system includes a first lens group, a second lens group, a third lens group, a fourth lens group, and an aperture stop, from an object side to an image side on an optical axis. The zoom lens system satisfies the following condition: Y × L 2 × f W × f T ? 1.06 where Y is a maximum diagonal length of the image side 170, L is a total track length of the zoom lens system 100, fW is a focal length of the zoom lens system 100 at a wide status, fT is a focal length of the zoom lens system 100 at a telephoto status.

Abstract: A zoom lens system includes, in order from an object side to an image side, first to fifth lens groups respectively having negative, positive, negative, positive, and positive refractive power. During zooming from a wide-angle end to a telephoto end, the second and third lens groups are moved independently toward the object side with spacing therebetween increased and that between the first and second lens groups decreased. The following condition is satisfied 1.05?(fW·LW)/(fT·Y)?1.53, wherein fW and fT are focal lengths of the zoom lens system at the wide-angle end and the telephoto end, Y represents a maximum diagonal length of an image plane, and LW represents a total length of the zoom lens system at the wide-angle end which is defined as a distance from the vertex of a first surface of the first lens on the object side to the image plane.

Abstract: A zoom lens device includes, in sequence from an object side to an imaging side, a negative first lens group, a positive second lens group, and a positive third lens group. When the zoom lens device is moved from a wide-angle condition to a telephoto condition, the second lens group moves towards the object side while the first lens group moves firstly towards the imaging side and then towards the object side to thereby reducing the distance between the first and second lens groups. The third lens group moves only when the zoom lens devices focuses.

Abstract: A zoom lens device includes, in sequence from an object side to an imaging side, a negative first lens group, a positive second lens group, and a positive third lens group. When the zoom lens device is moved from a wide-angle condition to a telephoto condition, the second lens group moves towards the object side while the first lens group moves firstly towards the imaging side and then towards the object side to thereby reducing the distance between the first and second lens groups. The third lens group moves only when the zoom lens devices focuses.

Abstract: A method and system for processing an image is provided. The method and system are used to enhance the sharpness of the image. First, an input pixel value is filtered for producing a filter value. Afterwards, an output pixel value is determined according to whether the compensation value is higher than the threshold value. If the compensation value is higher than the threshold value, the output pixel value is the input pixel value merged with the threshold value. If the compensation value is not higher than the threshold, the output pixel value is the input pixel value merged with the compensation value.

Abstract: A zoom lens system is disclosed which includes a first lens group with negative optical power, a second lens group with positive optical power, and a third lens group with positive optical power, arranged in that order from an object side to an image side. The zoom lens system performs zooming by changing distances between the lens groups. The first lens group includes at least two negative lenses, and one of the negative lenses is adjacent to the second lens group and satisfies the following criteria 0.08 < ? R ? ? ? 1 R ? ? ? 2 ? < 0.52 , where R1 is the curvature radius of the first surface facing toward the object side, and R2 is the curvature radius of the second surface facing toward the image side.

Abstract: The present invention provides a miniature zoom lens having a first, a second, a third, a fourth, and a fifth lens group from object side to image side in order. The powers of those lens groups in same order are positive, negative, positive, positive, and positive. The first lens group for receiving light and the third lens group are fixedly positioned. The second lens group for zooming, the fourth lens group for compensating aberration and the fifth lens group for focusing are movably positioned. When the zoom lens is zoomed from wide status to telephoto status, the second lens group is moved toward the third lens group, the fourth lens group is moved close to the third lens group. The sensitivity of the zoom lens is determined by second lens group to simplify the adjusting and proofing procedures of other lens groups.

Abstract: The present invention provides a miniature zoom lens having a first, a second, a third, a fourth, and a fifth lens group from object side to image side in order. The powers of those lens groups in same order are positive, negative, positive, positive, and positive. The first lens group for receiving light and the third lens group are fixedly positioned. The second lens group for zooming, the fourth lens group for compensating aberration and the fifth lens group for focusing are movably positioned. When the zoom lens is zoomed from wide status to telephoto status, the second lens group is moved toward the third lens group, the fourth lens group is moved close to the third lens group. The sensitivity of the zoom lens is determined by second lens group to simplify the adjusting and proofing procedures of other lens groups.

Abstract: The present invention discloses a method for image adjustment and includes the following steps. First, an image is supplied. The image includes many first sampling pixels in a high frequency area. Then, at least an interpolation algorithm is used on the image to obtain a first interpolation curve. Afterwards, the first interpolation curve in the high frequency area is modified to acquire a second interpolation curve. Then, according to the second interpolation curve, pixels are interpolated into the image.

Abstract: The present invention describes a method for image enlargement with the following steps. An image is divided into several sampling regions. A reference value of each sampling regions is determined. Then, the reference value is compared with a threshold for having a result. Finally, according to the result, at least one inserted pixel value is computed.