Abstract: The present disclosure includes techniques pertaining to computer implemented systems and methods for data usage monitoring. In one embodiment, user manipulations of spreadsheets are translated into backend actions and executed against spreadsheet data. The actions of users on different spreadsheets automatically generate data records to track each action. The data records are stored in a data structure and portions of the records may be accessed to generate usage information.

Abstract: A self-cleaning surveillance device and a method using the same are provided. The self-cleaning surveillance device includes a surveillance device and a fan. The surveillance device includes an image capturing device and a processor. The image capturing device captures a surveillance image. The processor receives the captured surveillance image, compares the captured surveillance image with a preset condition, and then generates a drive signal corresponding to a mismatch between the surveillance image and the preset condition. The fan is disposed at an edge of a front end of the surveillance device and receives the drive signal. The fan blows air towards the front end of the surveillance device according to the drive signal in order to clean the front end of the surveillance device.

Abstract: The present disclosure includes techniques pertaining to computer implemented systems and methods for data usage monitoring. In one embodiment, user manipulations of spreadsheets are translated into backend actions and executed against spreadsheet data. The actions of users on different spreadsheets automatically generate data records to track each action. The data records are stored in a data structure and portions of the records may be accessed to generate usage information.

Abstract: An illuminating device with adjustable light beams and a method for assembling the same. The light-emitting units are disposed on the substrate. The optical element is disposed in the path of a light emitted by at least one of the light-emitting units. The driving unit drives a first or second set of the light-emitting units, wherein a light beam formed by light that is emitted by the first set of the light-emitting units and passes through the optical element has a different shape or projection angle from a light beam formed by light that is emitted by the second set of the light-emitting units and passes through the optical element.

Abstract: A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens.

Abstract: Borate phosphors have a formula Zn1-x-yB2O4:Eu3+x, Bi3+y (wherein 0?x?0.6 and 0?y?0.6) emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens.

Abstract: An illuminating device with adjustable light beams and a method for assembling the same. The light-emitting units are disposed on the substrate. The optical element is disposed in the path of a light emitted by at least one of the light-emitting units. The driving unit drives a first or second set of the light-emitting units, wherein a light beam formed by light that is emitted by the first set of the light-emitting units and passes through the optical element has a different shape or projection angle from a light beam formed by light that is emitted by the second set of the light-emitting units and passes through the optical element.

Abstract: Borate phosphors have a formula Zn1-x-yB2O4:Eu3+x, Bi3+y (wherein 0?x?0.6 and 0?y?0.6) emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: The invention provides borate phosphors composed of Ca1-xAlBO4:Mx, wherein M is Pr3+, Nd3+, Eu3+, Eu2+, Gd3+, Tb3+, Ce3+, Dy3+, Yb2+, Er3+, Sc3+, Mn2+, Zn2+, or combinations thereof, and 0?x?0.3. The invention also provides borate phosphors composed of Zn1-x-yB2O4:Eu3+x, Bi3+y, wherein 0?x?0.6 and 0?y?0.6. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: The invention provides borate phosphors composed of Ma(Mb)1-xBO3:(Mc)x, wherein Ma is Li, Na, K, Rb, Cs, or combinations thereof, Mb is Mg, Ca, Sr, Ba, Zn or combinations thereof, Mc is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu, or combinations thereof, and 0?x?0.3. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: The invention provides a white light illumination device including an ultraviolet excitation light source and an ultraviolet excitable aluminosilicate phosphor. The ultraviolet excitable aluminosilicate phosphor has a formula as (M1-x,Rex)aAlbSicOd:D, wherein M is Mg, Ca, Sr, Ba or combination thereof. In addition, Re is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu or combination thereof, while 0<a, b, c, d, 2a+3b+4c=2d, and 0?x?a. Furthermore, D is F, Cl, I, Br, OH, S or combinations thereof. The aluminosilicate phosphor emits blue or blue-green light under the excitation of ultraviolet light, and the aluminosilicate phosphor may further collocate with different color phosphors to provide a white light illumination device.

Abstract: A bi-directional ratchet wrench includes a handle with a head at a front side formed a housing trough to hinge a ratchet wheel which has ratchet teeth on the perimeter and a knob strut jutting from one end surface, a switch element located in a swivel space formed at the housing trough with a plurality of harness teeth formed respectively on the left and right sides of a front end to allow the harness teeth on one side to engage with the ratchet teeth, and having a rear side formed with two concave portions, and confined at a selected swivel angle on the left and right sides by two retaining troughs formed in the swivel space, a butting unit having an elastic element embedded in the head and a spherical butting member butting the concave portions, and a sealing lid to seal the ratchet wheel and switch element.

Abstract: A lens module including a lens barrel, multiple lenses, and multiple cushions is provided. The lens barrel has an assembling opening, an inner wall, and multiple positioning structures. The positioning structures are integrally formed on the inner wall. An internal diameter of the positioning structure adjacent to the assembling opening is greater than an internal diameter of the positioning structure far away from the assembling opening. In addition, the lenses are respectively fixed in the corresponding positioning structure along an assembling direction. Each cushion is disposed in a pitch between two adjacent lenses, and each lens assembled in the lens barrel is disposed at a predetermined position through the positioning structures and cushions.

Abstract: A lens structure includes a first barrel, a second barrel, a third barrel, a first lens module and a second lens module. The first and the second barrel respectively have a first guiding-groove and a second guiding-groove. The third barrel has a first portion and a second portion. The first and the second portion respectively have a plurality of third guiding-grooves and a plurality of fourth guiding-grooves. The first and the second guiding-groove encircle the first and the second portion, respectively. The first and the second lens module respectively have a plurality of first guiding-portions and a plurality of second guiding-portions. The first guiding-portions are disposed in sliding way in the corresponding third guiding-groove and connected in helically sliding way into the first guiding-groove. The second guiding-portions are disposed in sliding way in the corresponding fourth guiding-groove and through the second guiding-groove.

Abstract: A lens structure includes a first barrel, a second barrel, a third barrel, a first lens module and a second lens module. The first and the second barrel respectively have a first guiding-groove and a second guiding-groove. The third barrel has a first portion and a second portion. The first and the second portion respectively have a plurality of third guiding-grooves and a plurality of fourth guiding-grooves. The first and the second guiding-groove encircle the first and the second portion, respectively. The first and the second lens module respectively have a plurality of first guiding-portions and a plurality of second guiding-portions. The first guiding-portions are disposed in sliding way in the corresponding third guiding-groove and connected in helically sliding way into the first guiding-groove. The second guiding-portions are disposed in sliding way in the corresponding fourth guiding-groove and through the second guiding-groove.

Abstract: The invention provides borate phosphors composed of Ca1-xAlBO4:Mx, wherein M is Pr3+, Nd3+, Eu3+, Eu2+, Gd3+, Tb3+, Ce3+, Dy3+, Yb2+, Er3+, Sc3+, Mn2+, Zn2+, or combinations thereof, and 0?x?0.3. The invention also provides borate phosphors composed of Zn1-x-yB2O4:Eu3+x, Bi3+y, wherein 0?x?0.6 and 0?y?0.6. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: The invention provides borate phosphors composed of Ma(Mb)1-xBO3:(Mc)x, wherein Ma is Li, Na, K, Rb, Cs, or combinations thereof, Mb is Mg, Ca, Sr, Ba, Zn or combinations thereof, Mc is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu, or combinations thereof, and 0?x?0.3. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: A lens module including a lens barrel, multiple lenses, and multiple cushions is provided. The lens barrel has an assembling opening, an inner wall, and multiple positioning structures. The positioning structures are integrally formed on the inner wall. An internal diameter of the positioning structure adjacent to the assembling opening is greater than an internal diameter of the positioning structure far away from the assembling opening. In addition, the lenses are respectively fixed in the corresponding positioning structure along an assembling direction. Each cushion is disposed in a pitch between two adjacent lenses, and each lens assembled in the lens barrel is disposed at a predetermined position through the positioning structures and cushions.

Abstract: The present invention discloses a zooming lens structure comprising at least a fixed lens barrel, an diaphragm member, a front track lens barrel, a rear track lens barrel, a front lens barrel module and a rear lens barrel module, wherein the first guide screw cylinder of the front lens barrel module is driven through geometric correlation of the first guide slot of the fixed lens barrel and the first track of the front track lens barrel to enable the front lens barrel module to shift within the fixed lens barrel; again, the second guide screw cylinder of the rear lens barrel module is driven through geometric correlation of the second guide slot of the fixed lens barrel and the second track of the rear track lens barrel to enable the rear lens barrel module to shift within the fixed lens barrel, and since the screw bolt locks the front and rear track lens barrel, the front and rear track lens barrels rotate simultaneously, and the first guide screw cylinder and the second guide screw cylinder then are simulta