Abstract: A system for detecting blemishes on an image sensor package includes an initialization module configured for initializing a suspected blemish standard mean value range and a blemish standard deviation value; an image capturing module configured for capturing an image produced by the image sensor package and acquiring a brightness value of each of pixels of the image; a calculation module configured for calculating a mean value and a standard deviation of differences of brightness values of a pixel and any other pixels surrounding the pixel; a comparison module configured for respectively comparing the mean value and the standard deviation with the suspected blemish standard mean value range and the blemish standard deviation value; and a marking module configured for marking the suspected blemish which is inside the suspected blemish standard mean value range and the blemish which is larger than the blemish standard deviation value.

Abstract: A height adjustment apparatus for a projection device comprises a socket, an engaging member, and a lifting member. The projection device comprises a housing having a front and bottom plate perpendicular to each other, the bottom and front plate defining a first and second opening therein, respectively. The socket comprising a locating portion is located on an inner surface of the bottom plate, covers the first opening and defines a third opening therein. The engaging member comprises a main portion, an engaging portion and a deformable portion. The main portion is inserted through the second opening. The engaging portion connecting the main portion defines a fourth opening aligning with the third opening. The deformable portion has a movable portion located in the locating portion. The lifting member comprises an upright lifting portion passing through the third opening and having a toothed face engaged by the engaging portion.

Abstract: A battery cover includes an outer panel, an inner panel, a resilient member and a chassis. The inner panel is disposed on the outer panel. The resilient member is located on the inner panel and includes two elongated arms. Each elongated arm includes a contact at the distal end thereof. The chassis is disposed on the resilient member and the inner panel, and is fastened to the outer panel. The chassis defines two openings configured for the two contacts to extend out correspondingly.

Abstract: A digital camera includes a fingerprint input interface, a fingerprint sensor, a fingerprint information storage unit, and a fingerprint identification module. The fingerprint input interface is for a current user to input the current user's fingerprint. The fingerprint sensor is for reading the current user's fingerprint and getting characteristics of the current user's fingerprint. The fingerprint information storage unit is for storing predefined characteristics of authorized users' fingerprints and access privilege settings of different users. The fingerprint identification module is for an administrator of the digital camera to set access privileges of different users according to the users' fingerprints, and authorizing the current user to access operations of the digital camera, and restricting access to operations of the digital camera according to whether the characteristics of the current user's fingerprint match the predefined characteristics of the authorized users' fingerprints.

Abstract: A height adjustment apparatus for a projector includes a lifting member and an operation member. The projector includes a front wall and a bottom wall substantially perpendicular to the front wall. The front wall defines a first opening and the bottom wall defines a second opening. The bottom wall has a protruding portion extending from an inner surface of the bottom wall. The lifting member includes a supporting portion and an engaging portion. An end surface of the lifting member away from the supporting portion has a plurality of teeth. The operation member includes a receiving frame and an operating portion. The inner surface of the receiving frame away from the operating portion has a latching portion for latching with the teeth of the lifting member.

Abstract: A piezoelectric buzzer driving circuit (200) for driving a piezoelectric buzzer (211) with two terminals includes a reverser (216). The reverser includes an output terminal and an input terminal (24) configured for receiving a controlling signal to control an output of the reverser. The two terminals of the piezoelectric buzzer respectively connected to the input terminal and the output terminal such that a D-value of the voltage across the piezoelectric buzzer is twice as large as the voltage of the controlling signal.

Abstract: A camera module capable of allowing personalization of an On-Screen Display (OSD) interface is provided. The camera module includes: a transmitting unit configured for transmitting icons to be used in an OSD interface to the camera module wirelessly or over wire, and saving the icons in a storage of the camera module; a mode selecting unit configured for selecting an OSD personalization mode; a reading unit configured for reading the transmitted icons from the storage of the camera module; a setting unit configured for setting the display size of the OSD interface and coordinates of each icon on a screen of an electronic device installed with the camera module to generate a personalized OSD interface. A related method for personalizing an OSD is also provided.

Abstract: An imaging lens system in order from the object side to the image side includes a first lens with negative refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power and a sixth lens with positive refractive. The imaging lens system satisfies the following formulas: Nd2>1.8 and Vd2<25, where Nd2 is the refractive index of the second lens, Vd2 is the Abbe number of the second lens.

Abstract: A control circuit is configured to control the charge and discharge of a flash unit. The flash unit includes an anode, a cathode, and a trigger electrode. The control circuit includes a charging circuit and a triggering circuit. One terminal of the charging circuit is coupled to a charging terminal and another terminal is coupled to the anode and the cathode. One terminal of the triggering circuit is coupled to a triggering terminal, another terminal is couple to the trigger electrode. The charging circuit includes a first capacitor coupled to the cathode and a second capacitor coupled to the anode. When the charging terminal receives a charging voltage and the triggering terminal receives a high-level voltage, three times charging voltage is formed between the anode and the cathode; then the flash unit generates a flash.

Abstract: An image sensor module includes a circuit board (20), an image sensor (10) and a supporting board (30). The circuit board has a plurality of circuits formed thereon. The image sensor is arranged on one side of the circuit board and is electrically connected to the circuit board. The circuit board defines at least one through opening (22) therein. The supporting board is arranged on an opposite side of the circuit board. A protrusion (31) extends outwardly from the supporting board through the at least one through opening of the circuit board. The image sensor is mounted on the protrusion.

Abstract: An zoom projection lens includes, in this order from the screen-side to the SLM-side thereof, a negative lens group and a positive lens group, and satisfies: ?2<?1/?2<?0.5, ?2<EFL1/EFL(W)<?1.5, 1.5<EFL2/EFL(W)<1.75, ?1.2<EFL1/EFL(T)<?1, 0.8<EFL2/EFL(T)<1.2, 0.5<EFL(W)/BFL(W)<0.6, 0.68<EFL(T)/BFL(T)<0.75, 6.2<TTL(W)/EFL(W)<6.5, and 3.5<TTL(T)/EFL(T)<3.6; where ?1 and ?2 represent refractive powers of the negative lens group and the positive lens group respectively, EFL(W), EFL(T), EFL1 and EFL2 represent effective focal lengths of the projection lens in a wide-angle state and in a telephoto state, the negative lens group, and the positive lens group respectively, TTL(W) and TTL(T) represent overall lengths of the projection lens in the wide-angle state and in the telephoto state respectively, and BFL(W) and BFL(T) represent rear focal lengths of the projection lens in the wide-angle state and in the telephoto state respectively.

Abstract: An imaging lens system in order from the object side to the image side includes a first lens with negative refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power and a sixth lens with positive refractive. The imaging lens system satisfies the following formulas: Nd2>1.8 and Vd2<25, where Nd2 is the refractive index of the second lens, Vd2 is the Abbe number of the second lens.

Abstract: A system for optimizing display colors of a digital light processing projector includes a color analyzer, and a central processing module. The color analyzer is configured for detecting a first image produced by the projector to obtain actual brightness proportions of red, green, and blue light components associated with the first image, and obtaining a color coordinate of the first image at the actual brightness proportions. The central processing module is configured for adjusting the actual brightness proportions to pre-set brightness proportions to form a second image. The color analyzer detects the second image to obtain a color coordinate thereof. The central processing module adjusts the color coordinate of the second image to a pre-set standard color coordinate, and changes the first gamma curve of the projector to a second gamma curve according to the adjusted color coordinate of the second image.

Abstract: A zoom lens includes a lens, a shutter-aperture, a moving barrel and a resisting ring. The lens includes a curved surface. The shutter-aperture includes a diaphragm for allowing light rays passing through and at least three blind holes. The moving barrel includes a bottom plate, a securing portion for securing the lens, at least three protrusions surrounding the securing portion and at least three elastic elements sleeved on the protrusions respectively. The securing portion and the at least three protrusions extend towards the object-side from the bottom plate. The resisting ring is disposed on an end of the moving barrel opposite to the bottom plate. The aperture-shutter is received in the moving barrel and the movement of the aperture-shutter is bounded by the resisting ring. When the zoom lens contracts, the protrusions are received in the blind holes correspondingly and the lens is received in the diaphragm.

Abstract: An image sensor module includes a circuit board, an image sensor, and a supporting board. The image sensor is electrically connected to the circuit board. The circuit board defines a through opening therein. The supporting board is arranged on one side of the circuit board and includes a protrusion. The protrusion extends outwardly from the supporting board and includes a square-shaped block no larger than the image sensor. The square-shaped block passes through the through opening. The image sensor is mounted on the block and spaced from the circuit board.

Abstract: An apparatus for managing the power of an illumination device supplied by a power source includes a switch, a switch controller, an imaging unit, and a pattern recognition unit. The switch is configured for electrically connecting or disconnecting the illumination device and the power source. The switch controller is configured for controlling the switch, thereby switching off the illumination device. The imaging unit is configured for capturing an image of an illuminated area illuminated by the illumination device. The pattern recognition unit is configured for detecting whether any person is contained in the captured image, and if not, instructing the switch controller to switch off the illumination device.

Abstract: An image capture device includes a face recognition module, a determination module, and an image edition module. The face recognition module recognizes a facial portion of a portrait photo. The determination module zooms the portrait photo until the facial portion satisfies first predetermined sizes, calculates the center of the facial portion, and determines a boundary of a photo identification to be created in the zoomed portrait photo according to second predetermined sizes, which interprets the center of the facial portion as the center thereof. The image edition module cuts the zoomed portrait photo along the boundary to create the photo identification.

Abstract: An exemplary projector includes a main body, a lens at a front of the main body and a lens barrier module positioned at the front of the main body for covering the lens when the projector is not in use or exposing the lens when the projector is in use. The lens barrier module includes a front bezel defining an opening aligned with the lens, a lens frame secured to a rear side of the front bezel and separated from the front bezel, and a lens cover slidably received between the front bezel and the lens frame. The lens frame defines an aperture aligned with the opening. The lens cover is positioned in a manner to selectively cover or uncover the lens.

Abstract: A zoom lens includes a substrate, an imaging unit, a stationary lens barrel, a cam lens barrel and a guide lens barrel. The substrate defines a plurality of openings thereon. The imaging unit is attached on the substrate. The stationary lens barrel is mounted on the substrate and surrounding the imaging unit. The cam lens barrel is rotatably received in the stationary lens barrel and movable along the optical axis of the zoom lens as the rotation thereof along the inner circumference of the stationary lens barrel. The guide lens barrel is received in the cam lens barrel and movable axially following the motion of the cam lens barrel, and comprises a plurality of key numbers protruding outwards from the outer circumference corresponding to and received in the openings of the substrate when the zoom lens is positioned in the minimum focal length position.

Abstract: A portable electronic device includes a body, a flippable unit, a pivoting shaft, a first magnetizable element, a second magnetizable element, a magnetic induction sensor IC, and a magnet. The pivot shaft connects the body and the flippable unit. A display is disposed in the flippable unit for showing an image. The magnetic induction sensor IC is disposed in the body. The magnet is disposed at and rotatable with the pivoting shaft. The first and the second magnetizable elements are disposed between the magnet and the magnetic induction sensor IC to enlarge the magnetic field of the magnet such that the magnetic induction sensor IC is capable of detecting change of the magnetic field of the magnet when the flippable unit together with the magnet is pivoted relative to the body.