Abstract: An image capturing lens assembly includes a focus tunable component and an imaging lens system. The imaging lens system includes a plurality of lens elements, wherein each of the lens elements has an object-side surface facing towards an object side of the imaging lens system and an image-side surface facing towards an image side of the imaging lens system, and at least one surface of at least one of the lens elements includes at least one inflection point.

Abstract: An image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has a concave image-side surface. The third lens element has a convex image-side surface. The fourth lens element has positive refractive power. The fifth lens element has a concave object-side surface. The image capturing optical lens assembly has a total of five lens elements.

Abstract: A photographing optical lens assembly includes, in order form an object side to an image side, a first lens element, a second lens element, a third lens element, and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has negative refractive power. The third lens element with refractive power has an object-side surface being concave in a paraxial region, and the object-side surface and an image-side surface are both aspheric. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region, and an image-side surface being convex in a paraxial region, the object-side surface and the image-side surface are both aspheric.

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has negative refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. The photographing optical lens assembly has a total of six lens elements, and the photographing optical lens assembly further includes an aperture stop.

Abstract: An image capturing assembly includes six lens elements, the six lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex. The fifth lens element has an image-side surface being concave. The sixth lens element has an image-side surface being concave, wherein the image-side surface of the sixth lens element includes at least one inflection point.

Abstract: An image capturing optical lens assembly includes, in order from an object side to an image side, a front lens group, an aperture stop and a rear lens group. The front lens group includes at least two lens elements, wherein one lens element closest to an imaged object of the at least two lens elements has negative refractive power and an image-side surface being concave. The rear lens group includes at least four lens elements, wherein one lens element closest to an image surface of the at least four lens elements has an image-side surface being concave. The image capturing optical lens assembly has a total of eight lens elements.

Abstract: A photographing lens assembly includes five lens elements, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has an object-side surface being concave in a paraxial region. The third lens element has an object-side surface being convex in a paraxial region. The fourth lens element has an object-side surface being concave in a paraxial region, wherein two surfaces thereof are both aspheric. The fifth lens element has an object-side surface and an image-side surface being both aspheric. At least one surface of the lens elements has at least one inflection point.

Abstract: A lens assembly includes at least three lens elements. One lens element closest to an imaged object of the lens elements is a first lens element, which is made of an electromagnetic radiation absorbing material.

Abstract: A photographing optical lens assembly includes, in order form an object side to an image side, a first lens element, a second lens element, a third lens element, and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has negative refractive power. The third lens element with refractive power has an object-side surface being concave in a paraxial region, and the object-side surface and an image-side surface are both aspheric. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region, and an image-side surface being convex in a paraxial region, the object-side surface and the image-side surface are both aspheric.

Abstract: An image capturing optical lens assembly includes, in order from an object side to an image side, a front lens group, an aperture stop and a rear lens group. The front lens group includes at least two lens elements, wherein one lens element closest to an imaged object of the at least two lens elements has negative refractive power and an image-side surface being concave. The rear lens group includes at least four lens elements, wherein one lens element closest to an image surface of the at least four lens elements has an image-side surface being concave. The image capturing optical lens assembly has a total of eight lens elements.

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has an image-side surface being concave. The second lens element has an image-side surface being concave. The fourth lens element has an image-side surface being convex. The sixth lens element has an object-side surface being concave. The photographing optical lens assembly has a total of six lens elements.

Abstract: A photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has negative refractive power. The fourth lens element has positive refractive power. The fifth lens element has positive refractive power. The sixth lens element has negative refractive power. The photographing optical lens assembly has a total of six lens elements, and the photographing optical lens assembly further includes an aperture stop.

Abstract: A photographing optical lens assembly includes, in order form an object side to an image side, a first lens element, a second lens element, a third lens element, and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has negative refractive power. The third lens element with refractive power has an object-side surface being concave in a paraxial region, and the object-side surface and an image-side surface are both aspheric. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region, and an image-side surface being convex in a paraxial region, the object-side surface and the image-side surface are both aspheric.

Abstract: An image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with negative refractive power has a concave image-side surface. The third lens element has a convex image-side surface. The fourth lens element has positive refractive power. The fifth lens element has a concave object-side surface. The image capturing optical lens assembly has a total of five lens elements.

Abstract: A photographing optical lens assembly includes, in order from object side to image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element with negative refractive power has an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region. The third and fourth lens elements have refractive power. The fifth lens element with refractive power has an object-side surface being convex in a paraxial region. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region, and an object-side surface and the image-side surface of the sixth lens element are aspheric. The image-side surface of the sixth lens element has at least one inflection point.

Abstract: An active data push system comprising a plurality of human-detection devices and a management system is presented. The human-detection devices respectively send a trigger signal when detecting a human entrance into one of a plurality of zones. The management system recognizes the zone detected with the human entrance when receiving the trigger signal, and retrieves a basic data of each electronic device installed in the recognized zone, and transmits the retrieved basic data to a mobile device held by the human.

Abstract: A photographing optical lens assembly includes, in order form an object side to an image side, a first lens element, a second lens element, a third lens element, and a fourth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region. The second lens element has negative refractive power. The third lens element with refractive power has an object-side surface being concave in a paraxial region, and the object-side surface and an image-side surface are both aspheric. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region, and an image-side surface being convex in a paraxial region, the object-side surface and the image-side surface are both aspheric.

Abstract: A photographing optical lens assembly includes, in order from object side to image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The second lens element with negative refractive power has an object-side surface being convex in a paraxial region and an image-side surface being concave in a paraxial region. The third and fourth lens elements have refractive power. The fifth lens element with refractive power has an object-side surface being convex in a paraxial region. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region, and an object-side surface and the image-side surface of the sixth lens element are aspheric. The image-side surface of the sixth lens element has at least one inflection point.

Abstract: A temperature-detecting system includes a plurality of detected-objects, an infrared image-detecting apparatus arranged corresponding to the detected-objects, and an image-processing apparatus electrically connected to the infrared image-detecting apparatus. The infrared image-detecting apparatus derives a lens-frame image. The locations of the detected-objects required temperature detection in the lens-frame image are obtained by the image-processing apparatus. The color of the locations of the detected-objects required temperature detection in the lens-frame image are analyzed by the image-processing apparatus to derive related temperature data.

Abstract: A network video monitoring system includes a core-control module, a plurality of network video recording (NVR) hosts, and a plurality of cameras. The core-control module assigns the cameras to the NVR hosts respectively for controlling the camera by the NVR hosts according to status of each NVR host. In this application, the core-control module obtains the status of each NVR host periodicity for determining if the NVR hosts are over loading or failed, and re-assigns the cameras automatically for the overloaded or malfunctioned NVR hosts. The application rescues the NVR hosts from the over loading problem, and prevents the termination of the monitoring action of the cameras when one of the NVR host malfunctions.