Abstract: A backlight module (10) includes a light source and a light guide plate (12). The light source defines a number of light units (11) for emitting light beams. The light guide plate includes a light incident surface (121), an emission surface (123) adjacent to the light incident surface, a bottom surface (124) opposite to the emission surface, a plurality of side surfaces (122) between the emission surface and the bottom surface, and a plurality of diffusion units (13) formed on the bottom surface. A dot size of each diffusion unit/dot is inversely proportional to a summation of the sum of reciprocals of squares of distances between the diffusion unit and each of the light units and the sum of reciprocals of squares of distances between the diffusion unit and corresponding images of each of the light units formed, respectively, by the side surfaces.

Abstract: A device (100) for stripping an outer covering (141) of a cable (140) includes a base (110) having a shaft (111) coupled thereto, a laser generator (130) configured for emitting a laser beam and a rotating arm (120). The shaft defines a central axis configured for coaxial alignment with the cable. The laser generator is arranged at rest relative to the rotating arm. The rotating arm includes at least one light directing member configured for directing the laser beam emitted from the laser generator to impinge upon a circumference of the outer covering of the cable. The rotating arm is rotatable relative to the central axis associated with the shaft in a manner such that the circumference of the outer covering of the cable can be impinged upon by the laser beam thus stripping the outer covering of the cable.

Abstract: A backlight module (1) has a light guiding device (2) and a light source (200). The light guiding device has a single light guide plate (20), and a reflection member (26). The single light guide plate has a light incidence surface (211), a top light emitting surface (23), and an opposite bottom light emitting surface (22). The single light guide plate further has a plate cavity (not labeled) formed therein for receiving the reflection member. The reflection member has a top reflection surface (28) and an opposite bottom reflection surface (29). The top reflection surface of the reflection member faces toward the top light emitting surface of the light guide plate, and the bottom reflection surface of the reflection member faces toward the bottom light emitting surface of the light guide plate.

Abstract: A camera module includes a body having a front face and a back face opposite to the front face, a display screen disposed on the front face of the body, a camera lens provided on the back face of the body, a through window defined in the body, and a turn member rotatably mounted on the back face of the body. The turn member includes a reflection mechanism configured for reflecting light incident from the window onto the camera lens while the turn member is turned to a predetermined position.

Abstract: An exemplary optical module (100) includes a lens barrel (20), a lens group (40), a spacer (60), and a filter (80). The lens barrel has an inner wall (201), and at least two securing grooves (206) formed on the inner wall. The lens group and the spacer are disposed in the lens barrel. The spacer includes an annular base (601) and a predetermined amount of projecting blocks (603) formed on a same side of the base (601). At least two first bending portions (604) are formed on the blocks bending toward a center of the base, and at least two second bending portions (606) are formed on the blocks bending outwards from a center of the base. The second bending portions are configured to be secured in the securing grooves of the lens barrel. The filter is secured on the spacer by the first bending portions.

Abstract: An apparatus (100) for assembling and testing a lens unit (20) having a barrel (202) and a lens group (204) includes an assembling device (22), a testing device and a mounting member (30). The assembling device is used to assemble the lens group into the barrel to form the lens unit. The testing device is used to test the assembled lens unit. The mounting member is configured for carrying the lens unit in a manner so as to move the lens unit along a circle from a first position where the assembling device performs the assembling to a second position where the testing device performs the testing.

Abstract: A digital camera module (100) for a portable electronic device, includes a lens holder (20), a lens module (10) axially movably received in the lens holder and at least one position tracking device (30). Each position tracking device includes a resistor (33) secured to the holder, a probe (31) attached to the lens module and slidably contacting with the resistor, and a measuring unit (35) electrically connecting with the resistor and the probe therebetween in series for measuring a resistance value of the resistor as it changes with the movement of the lens module thus enabling it to detect the position of the lens module.

Abstract: A camera module (100) includes a lens unit (20), an image sensor (80), an optical group (406a, 406b), and at least a first light directing unit and a second light unit directing each having two reflective surfaces. The optical group includes a first reflective surface facing the lens unit and a second reflective surface facing the image sensor. The reflective surfaces of the first and second light directing units are positioned corresponding to the first and second reflective surfaces of the optical group. A distance between the first light directing unit and the optical group is different from that between the second light directing unit and the optical group. The optical group is movable relative to the first and second light directing unit. When the optical group is moved to different positions, light from the lens unit is directed to the image sensor in different path.

Abstract: A frame for a backlight module includes a stable case (21), a movable case (22) and connecting elements. The stable case has a bottom plate (210) and at least three sidewalls (211) connected to the bottom plate, and the movable case has a back rim (221) and two side rims (222) connected thereto. The movable case is slideably connected with the stable case by the connecting elements. The frame is compact, and which can be used for light guide plates with different sizes.

Abstract: A backlight module (100) includes a reflection plate (120), a diffuser plate (110), at least one light source (130) arranged between the reflection plate and the diffuser plate, and at least one diverging lens (140) arranged between the at least one light source and the diffusing plate. The present backlight module can decrease thickness of the backlight module, improve uniformity of brightness, and decrease cost.

Abstract: An illuminated logo unit (300) includes an image panel (301), and an underlying illuminating device (310) transmitting light beams to the image panel. The illuminating device includes an inner discoid light guide plate (312) fitted into an outer annular light guide plate (311), and four light sources (369, 359) separately emitting light beams toward respective emitting surfaces (360, 350) of the light guide plates. A reflective film (362) coated on a circumferential wall (361) of the inner light guide plate prevents light beams in each light guide plate from interfering with light beams of the other light guide plate. A reflective film (352) coated on a circumferential wall (351) of the outer light guide plate prevents light beams from leaking thereout. By the use of the light guide plates, the illuminated logo unit attains uniform illumination in each of two illumination areas thereof.

Abstract: A lens module (20) is adapted for use in a digital camera. A lens module includes a lens barrel (21), a plurality of lenses including a first lens (22) and a second lens (23) and an aligning mechanism. The two lenses received in the lens barrel. The aligning mechanism an aligning mechanism configured to align respective optical axes of the first and second lenses with each othe. The aligning mechanism is disposed between the two lenses.

Abstract: A light guide plate includes an incidence surface, an emission surface, a bottom surface opposite to the emission surface, and a plurality of dots distributed on the bottom surface. The emission surface and the bottom surface are adjoining to the incidence surface. Each of the dots has a substantially fan-shaped cross-section in the direction of the bottom surface.

Abstract: A light guide plate (32) used in a surface light source (30) for a liquid crystal display includes a light incidence surface (321) for receiving light beams, an emission surface (325) perpendicular to the light incidence surface for emitting the light, a bottom surface (323) opposite to the emission surface, and a plurality of grooves (327) and light reflection dots (329) formed on the bottom surface. The grooves are formed in a continuous band adjacent to the light incidence surface and extend perpendicular to the light incidence surface for scattering the light beams. The light guide plate provides highly uniform illumination for a liquid crystal display panel.

Abstract: The digital camera module with an auto-focusing function includes a lens barrel (10), a lens mount (20) and an image pick-up sensor (50). The lens barrel has at least one lens (14) positioned therein. The lens mount includes a first frame (22), a second frame (24), an adjusting mechanism, and a driving mechanism (40). The first frame and the second frame are spaced apart. The lens barrel is mounted on and/or within one of the first frame and the second frame. The adjusting mechanism is connected with the first frame and the second frame and configured to be extendable. The magnetism-based driving mechanism is configured to drive and selectably extend the adjusting mechanism. The image pick-up sensor is disposed on the other one of the first frame and the second frame.

Abstract: A backlight system (100) in accordance with the present invention includes a plurality of light sources (110) for emitting light beams and a light guide plate (120) for receiving the light beams emitted by the light sources. The light guide plate includes a light input surface (121) and a light output surface (122) joining the light input surface. The light input surface has a plurality of recesses (124) therein. The recesses have cylindrical surfaces, each having a specific curvature, and the light beams emitted by the light sources pass through the cylindrical surfaces orthogonally. Since nearly all of the light beams enter into the light guide plate with few being reflected at the light input surface, the backlight system is highly efficient in light utilization.

Abstract: A backlight module (20) includes a light guide plate (20), a light source (21), and a translective film (22). The light guide plate includes a bottom surface (26) and an opposite light emitting surface (25). A recess (27) is defined in the light guide plate at the bottom surface, and contains the light source. The transflective element is disposed between the light source and the recess, to control the intensity of the light beams entering the light guide plate. The transfective film negates excessively high intensity of light beams at regions near the light source. Thus the backlight module provides uniform illumination.

Abstract: A backlight module (1) has a light guiding device (2) and a light source (200). The light guiding device has a light guide plate (20), a reflection member (26), and a reflection plate (210). The light guide plate has a light incidence surface (211) and two opposite light emitting surface (22, 23), defines a space (not labeled) receiving the reflection member therein, and an opening (25) for accessing the space. The reflection member has two opposite reflection surfaces (28, 29), and a plurality of micro dots (27) provided on the reflection surfaces. A reflection film (220) is attached to the reflection plate. In assembly, the reflection member is disposed such that the reflection surfaces face the light emitting surfaces of the light guide plate, respectively, and the light source is disposed adjacent to the light incidence surface, the reflection plate is attached to the side surface.

Abstract: A display device (20) includes a light guide plate (200) and a row of light sources (211). The light guide plate includes an emitting surface (220), a bottom surface (230) opposite to the emitting surface, and an incident surface (210) adjoining the emitting surface and the bottom surface. A number of wedgy recesses (234) are defined in the light guide plate at the bottom surface. The light sources are disposed adjacent the incident surface of the light guide plate. Inclined planes bounding the recesses obliquely face both the incident surface and the emitting surface. The inclined planes reflect light and form bright spots on the emitting surface. The bright spots cooperatively form a desired pattern similar to a pattern of the recesses themselves. There is no need to form patterns on a separate shell. The relatively fewer components required reduces costs.

Abstract: A method for manufacturing a light guide plate (LGP) stamper (26) includes the steps of: forming a photo-resist film (21) on a substrate (30); exposing and developing the photo-resist film to form micro patterns (21?); etching the substrate by means of a dry etching method to form a perform including the stamper; and stripping off residual patterns from the substrate to form the LGP stamper.