Abstract: A semiconductor laser module including a barrel screwed up with a screw cap and a semiconductor laser beam generating device mounted inside the barrel and triggered to emit a laser beam out of a laser beam firing hole on the screw cap, wherein the semiconductor laser beam generating device has two opposite pairs of planes spaced equiangularly spaced around the periphery and respectively stopped against; the barrel has springs mounted in respective locating holes and respectively stopped against two adjacent planes on the semiconductor laser beam generating device and two adjustment screws mounted in respective screw holes and respectively stopped against the other two adjacent planes of the semiconductor laser beam generating device and turned to align the longitudinal central axis of the position of the semiconductor laser beam generating device with that of the barrel.

Abstract: A laser sight including a mounting base fixed to the bow back of a bow, a first holder frame fastened to the mounting base and adjusted in the X-axis direction, a second holder frame fastened to the first holder frame and adjusted in the Y-axis direction, a third holder frame fastened to the second holder frame and adjusted in the Z-axis direction and having a sight blade, and a laser module fastened to a swivel laser module holder on the third holder frame, wherein the swivel laser module holder is fastened to the third holder frame by an adjustment screw and can be turned about the adjustment screw to adjust the angle of inclination of the laser module for allowing the laser beam from the laser module to be aimed at a target when the sight blade is aligned with the target.

Abstract: A telescope sight collimating device including a laser aimer, a longitudinal center axle at one end of the aimer sleeved with a split sleeve and threadably engaged with a lock nut at its free end for positioning the device in the barrel of the gun, a tapered tubular locating rod and a tapered tubular tightening up rod respectively mounted around the longitudinal center axle and engaging both ends of the split sleeve, and an adjusting nut mounted around the longitudinal center axle and turned in either direction to move the tapered tubular tightening up rod forward or backward, causing the sleeve to be fixed to or released from the inside wall of the barrel of the gun.

Abstract: A laser marker including a laser marker body to hold a battery power supply and a control circuit, a laser module pivotably connected to the laser marker body and controlled by a push-button switch of the control circuit board to emit a laser beam, a set of laser firing caps alternatively mounted on the laser module to refract the laser beam by a respective plano-convex length of different focal length for marking a line of light on a workpiece for guiding a cutting tool to cut the workpiece. The laser module can be turned on laser marker body around the X-axis; the laser firing cap can be turned on the laser module around the Y-axis.

Abstract: A semi-conductor laser device constant power output controller including a power input, a laser diode device consisted of a laser diode and a photoelectric diode, a current driver consisted of a first transistor and a second transistor, and an output control consisted of a zener diode and a variable resistor, whereby the electric current to the laser diode is controlled by the second transistor; the electric current to the second transistor is controlled by the first transistor; the photoelectric diode detects the laser beam of the laser diode for feedback reference; the zener diode and the variable resistor control the output power by means of controlling the electric current to the laser diode.

Abstract: A laser module includes a hollow, cylindrical casing having a tapered laser beam emitting hole at one end and an inner thread at an opposite end; a lens mounted inside the casing and retained between a cushion ring and a locating ring; a base having an outer thread threaded into the inner thread on the casing; a laser diode chip and a photo detector mounted on the base and connected to contact pins of the base; a control circuit board fitted into the rear open end of the casing to block the base on the inside and electrically connected to the contact pins on the base for controlling the laser diode chip to emit a constant laser beam out of the tapered laser beam emitting hole via the lens.

Abstract: A diode laser collimatting device comprising a laser collimatting socket mounted on a socket holder through plug-in connection with a plastic lens retained therebetween in position, a laser diode inserted in said socket holder, an exciter circuit board inserted in said socket holder and connected to said laser diode, and a contact spring inserted in said socket holder and connected to said exciter circuit board, and wherein inserting said laser diode into said socket holder causes said socket holder, said laser diode, said exciter circuit board, said contact spring and said power supply to form into a circuit permitting said laser diode to be excited by said exciter circuit board to emit light through said plastic lens and said laser collimatting socket; a grid is fastened in said center hole to filtrate the light beam produced from said laser diode.