Abstract: A non-contact electronic level has a light source, a vial having a bubble and positioned to be irradiated by light from the light source, and a photo sensor located at a position corresponding to the bubble at a fixed distance from the vial. The photo sensor captures an image of the bubble after the vial is irradiated by the light source. An image processing unit is electrically coupled to the photo sensor and converts the image of the bubble into an electronic level signal by comparing the centroid of the image of the bubble with a predetermined point.

Abstract: A laser indicator has a laser mechanism having three laser generators generating laser beams perpendicular to each other. Each of the three laser generators is electrically coupled to a separate laser control motor for independent control of the beam of the corresponding laser generator. The laser indicator further includes an adjusting mechanism including a control circuit module, a frame having an adjustment support associated therewith, and a plurality of level control motors disposed in the frame. The laser indicator also includes a laser generator adjuster and tightener.

Abstract: A multifunctional light beam pointer includes a case that houses a memory, a data transmission interface, a memory controller, and a laser light source. The memory controller is coupled to the memory and the data transmission interface for transferring data through the data transmission interface for storage in the memory. The laser light source emits a laser beam from the pointer.

Abstract: A cutting line indicator is adapted to be installed on a circular sawing blade of a sawing machine to produce a line-shaped beam to delineate the cutting line of the circular sawing blade. The cutting line indicator has a light source for generating a light beam that forms the line-shaped beam, a lower cover that is made from a first metal plate, and a spindle received in the lower cover, with the spindle being made from a second metal plate. An inner housing is arranged on the lower cover, with the light source coupled to the inner housing. An upper cover is coupled to enclose the lower cover.

Abstract: A flashlight has a barrel having a front end and a rear end, with a battery disposed inside the barrel. The flashlight also includes a light source disposed at the front end of the barrel, a light source controlling circuit electrically connected with the battery and the light source for controlling the lighting of the light source, a lens assembly provided at the front end of the barrel for capturing an image, and an image processing circuit disposed inside the barrel and electrically connected with the battery and the lens assembly to process and store the captured image. A recharging device can be provided for recharging the battery in the flashlight.

Abstract: A laser receiver for detecting the position of incidence of a beam of laser light thereon includes a first photodetector and a second photodetector aligned in series with each other and spaced apart from each other by a gap. If the laser is evenly distributed between the two photodetectors, then the laser position will be set as the correct position and a corresponding signal will be displayed. However, if the first photodetector detects more light than the second photodetector, then a signal will also be displayed to inform the user that more laser is being projected onto the first photodetector. On the other hand, if the second photodetector detects more light than the first photodetector, then a signal will be displayed to inform the user that more laser being projected onto the second photodetector. These signals will assist users to adjust the laser receiver to accurately position the laser.

Abstract: A non-contact electronic level has a light source, a vial having a bubble and positioned to be irradiated by light from the light source, and a photo sensor located at a position corresponding to the bubble at a fixed distance from the vial. The photo sensor captures an image of the bubble after the vial is irradiated by the light source. An image processing unit is electrically coupled to the photo sensor and converts the image of the bubble into an electronic level signal by comparing the centroid of the image of the bubble with a predetermined point.

Abstract: A non-contact electronic level has a light source, a vial having an air bubble and positioned to be irradiated by light from the light source, a photo sensor located at a position corresponding to the air bubble at a fixed distance from the vial, with the photo sensor capturing an image of the air bubble after the vial is irradiated by the light source, and an image processing unit electrically coupled to the photo sensor and converting the image of the air bubble into an electronic level signal.

Abstract: A lighting assembly has a light source main body and a light source control module. The light source main body has a light source that generates light. The light source control module includes a power switch, a housing removably coupled to the light source main body, and a modulation circuit retained inside the housing. The modulation circuit is electrically connected to the power switch for making the light source flash with a frequency when the power switch is turned on.

Abstract: A laser receiver for detecting the position of incidence of a beam of laser light thereon includes a first photodetector and a second photodetector aligned in series with each other and spaced apart from each other by a gap. If the laser is evenly distributed between the two photodetectors, then the laser position will be set as the correct position and a corresponding signal will be displayed. However, if the first photodetector detects more light than the second photodetector, then a signal will also be displayed to inform the user that more laser is being projected onto the first photodetector. On the other hand, if the second photodetector detects more light than the first photodetector, then a signal will be displayed to inform the user that more laser being projected onto the second photodetector. These signals will assist users to adjust the laser receiver to accurately position the laser.

Abstract: A laser indicator has a laser mechanism having three laser generators generating laser beams perpendicular to each other. Each of the three laser generators is electrically coupled to a separate laser control motor for independent control of the beam of the corresponding laser generator. The laser indicator further includes an adjusting mechanism including a control circuit module, a frame having an adjustment support associated therewith, and a plurality of level control motors disposed in the frame. The laser indicator also includes a laser generator adjuster and tightener.