Abstract: A laser module has a housing and a laser light source. The housing is made of a material that is pervious to light and has a first end that is provided with a lens, and a second end that is provided with an opening extending into the housing to a location adjacent to the lens. The laser light source is secured in the opening at a location that is at a predetermined distance from the lens.

Abstract: A lens is provided for converting a laser beam into laser lines of uniform brightness. The lens has an emission plane through which the laser beam passes, the emission plane having a continuous incline. There is also provided a method for designing the lens.

Abstract: A laser level generates a first, a second and a third laser beam which are perpendicular to each other. The laser level includes a first laser generator for generating the first laser beam, a second laser generator for generating an incident laser beam, and a prism disposed in front of the second laser generator for splitting the incident laser beam into the second and the third laser beams. A plurality of vials are provided for indicating the level of the respective first, second and third laser beams, and a housing accommodates the first laser generator, the second laser generator, the prism and the vials.

Abstract: A lens is provided for converting a laser beam into laser lines of uniform brightness. The lens has an emission plane through which the laser beam passes, the emission plane having a continuous incline. There is also provided a method for designing the lens.

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 lens is provided for converting a laser beam into laser lines of uniform brightness. The lens has an emission plane through which the laser beam passes, the emission plane having a continuous incline. There is also provided a method for designing the lens.

Abstract: A lens is provided for converting a laser beam into laser lines of uniform brightness. The lens has an emission plane through which the laser beam passes, the emission plane having a continuous incline. There is also provided a method for designing the lens.

Abstract: A lens is provided for converting a laser beam into laser lines of uniform brightness. The lens has an emission plane through which the laser beam passes, the emission plane having a continuous incline. There is also provided a method for designing the lens.

Abstract: An angle measurement and distance demarcation device has a body having a first surface, an axis which extends from the first surface, and a containing room. The device also has a rotating unit coupled for rotation about the axis, and a laser emitter. The device further includes a coupling mechanism provided around the axis and coupling the rotating unit to the body, and a power supply unit provided inside the containing room and coupled to the laser emitter for supplying power to laser emitter. The device can be used together with either a triangular angle gauge or a disk angle gauge.

Abstract: An angle measurement and distance demarcation device has a body having a first surface, an axis which extends from the first surface, and a containing room. The device also has a rotating unit coupled for rotation about the axis, and a laser emitter. The device further includes a coupling mechanism provided around the axis and coupling the rotating unit to the body, and a power supply unit provided inside the containing room and coupled to the laser emitter for supplying power to laser emitter. The device can be used together with either a triangular angle gauge or a disk angle gauge.

Abstract: A multifunctional turntable for a leveling device includes a pedestal, a limb, a level adjustment means and a turn member. The turn member has an open end trough and clamp boards to hold a measuring or surveying instrument therebetween and thereby a plane pressure is used to clamp the instrument. By providing the multifunctional turntable of the present invention, a wide variety of instruments can then be carried securely and steadily, and a horizontal level of the carried instrument can thus be easily achieved.

Abstract: A laser extender is provided for accurately elongating a reference line. The laser extender includes a housing, a battery set, and a laser unit. The housing has an external basic flat plane for resting upon a flat surface and having a straight edge that is adapted to be aligned with a reference line, an internal accommodating space, and a plurality of through holes for accessing the internal accommodating space from the exterior of the housing. The battery set is provided inside the internal accommodating space. The laser unit, utilizing power provided by the battery set, is located inside the internal accommodating space for generating a spanning plane laser beam perpendicular to the basic flat plane of the housing and for extending the reference line defined by the straight edge. In addition, the laser extender can engage a beam leveler for enhancing the leveling ability of the laser extender.

Abstract: A 3D laser leveler is provided for accurately locating distant parallel or extension lines. The 3D laser leveler has a base block and a rotator. The base block provides a base plane for resting upon a flat surface when in use, a first leveling unit for examining the leveling status of the base plane, and a pivot mechanism. The rotator is rotatably connected to the base block and rotatable around the pivot mechanism, and includes a housing for providing an internal accommodating space, a battery set and a laser unit received inside the accommodating space. The laser unit uses power provided by the battery set for generating a spanning plane laser beam that can be utilized to locate a spatial extension or a perpendicular line. In addition, a joining bracket can be included separately to connect the 3D laser leveler and a conventional beam leveler.

Abstract: A method of manufacturing a laser module is provided, which includes the steps of providing a one-piece cylindrical housing having a bore, a front window and a rear opening, securing a lens piece in the bore adjacent the front window, introducing a laser diode into the bore through the rear opening, applying a force to the laser diode to insert the laser diode into the bore while simultaneously focusing the lens, and ceasing the application of force when the lens has been accurately focused.