Abstract: An anti-twist structure of voice coil motor includes a base, a lens housing, an elastic sheet, a magnet, and a yoke member. The lens housing has a margin wall, and the margin wall has a first protrusion and a contact portion. The elastic sheet has a hollowed slot, and the first protrusion pass through the hollowed slot, so that the elastic sheet is disposed on a portion of the margin wall and on the contact portion. The yoke member has an upper wall and a side wall. The side wall is disposed at one side of the upper wall and the side wall extends outward in a direction not parallel to the upper wall. The yoke member surrounds the lens housing, the elastic sheet, and the magnet. The lens housing has a deflectable angle relative to a horizontal reference line.

Abstract: An anti-twist structure of voice coil motor includes a base, a lens housing, an elastic sheet, a magnet, and a yoke member. The lens housing has a margin wall, and the margin wall has a first protrusion and a contact portion. The elastic sheet has a hollowed slot, and the first protrusion pass through the hollowed slot, so that the elastic sheet is disposed on a portion of the margin wall and on the contact portion. The yoke member has an upper wall and a side wall. The side wall is disposed at one side of the upper wall and the side wall extends outward in a direction not parallel to the upper wall. The yoke member surrounds the lens housing, the elastic sheet, and the magnet. The lens housing has a deflectable angle relative to a horizontal reference line.

Abstract: An optical lens and a light source module are provided. The optical lens includes a light incident portion and a light guiding portion. The light incident portion includes two back optical surfaces, a first light incident surface, and two second light incident surfaces. The light guiding portion has a plurality of light guiding branches and the light guiding branches extend along different extending directions, wherein each of the light guiding branches has a main light emitting surface, and the first light incident surface and the second light incident surface face the main light emitting surfaces of the light guiding branches, respectively.

Abstract: An illumination system and an operating method thereof are provided. The illumination system includes a light source defining a illumination range, an image capturing device for obtaining an image within the illumination range, an optical channel switch assembly including optical channel switches forming an array, a computing unit, and a driving unit. When a physiological characteristic is detected in the image, the computing unit obtains a controlling region of the array corresponding to a position of the physiological characteristic located in the image, and commands the driving unit to control a light passing amount of at least a portion of the optical channel switches located in the controlling region.

Abstract: An optical lens and a light source module are provided. The optical lens includes a light incident portion and a light guiding portion. The light incident portion includes two back optical surfaces, a first light incident surface, and two second light incident surfaces. The light guiding portion has a plurality of light guiding branches and the light guiding branches extend along different extending directions, wherein each of the light guiding branches has a main light emitting surface, and the first light incident surface and the second light incident surface face the main light emitting surfaces of the light guiding branches, respectively.

Abstract: An illumination device including an upper casing, a transparent bottom casing, a light source module and a reflection layer is provided. The upper casing has a lower surface. The transparent bottom casing has an upper surface. The light source module is disposed on the lower surface of the upper casing. The reflection layer is extended between the upper surface of the transparent bottom casing and the lower surface of the upper casing for reflecting the light emitted by the light source module.

Abstract: An equipment maintenance prediction system and an operation method for the equipment maintenance prediction system are provided. The operation method includes steps of: configuring the processor to configure the factor decision module to select one of a plurality of parameter types as a decision parameter type according to a key parameter type, wherein the decision parameter type and the key parameter type are most correlative; configuring the processor to configure the prediction module to generate a prediction model according to a part of a plurality of historical sensing values of the decision parameter type and formulate a maintenance alerting condition according to a part of a plurality of historical sensing values of the key parameter type; and configuring the processor to configure the maintenance alerting module to monitor and alert according to the maintenance alerting condition.

Abstract: An illumination system and an operating method thereof are provided. The illumination system includes a light source defining a illumination range, an image capturing device for obtaining an image within the illumination range, an optical channel switch assembly including optical channel switches forming an array, a computing unit, and a driving unit. When a physiological characteristic is detected in the image, the computing unit obtains a controlling region of the array corresponding to a position of the physiological characteristic located in the image, and commands the driving unit to control a light passing amount of at least a portion of the optical channel switches located in the controlling region.

Abstract: An illumination device including an upper casing, a transparent bottom casing, a light source module and a reflection layer is provided. The upper casing has a lower surface. The transparent bottom casing has an upper surface. The light source module is disposed on the lower surface of the upper casing. The reflection layer is extended between the upper surface of the transparent bottom casing and the lower surface of the upper casing for reflecting the light emitted by the light source module.

Abstract: A traffic signal light device that includes a spread window, a Fresnel lens, and an LED module for emitting light. The light emitted by the LED module passes through the Fresnel lens and to the spread window. The LED module is disposed at a position that is offset from an axis of the spread window that passes through a center of, and is perpendicular to, the spread window. The Fresnel lens can have a saw-toothed pattern of teeth formed as concentric circles on one surface of the Fresnel lens sharing a common center, where the size or height of the teeth vary. The spread window can have a plurality of protruding cells of varying size on a surface of the spread window.