Laser Electronic Target System Using Non-Overlapping and Crossing Rectangular Laser Screens

Abstract

A laser electronic target system is disclosed herein, comprising a bullet trap and a first and second rectangular laser screens generated in front of the bullet trap, wherein each of the first and second rectangular laser screens is generated by a detachable laser transmitter and a laser receiver comprising a first sensor strip and a second sensor strip, wherein a first end of the first sensor strip is perpendicularly connected to a second end of the second sensor strip, wherein each sensor strip comprises 100 to 150 laser sensors, and wherein the laser transmitter and the first and second sensor strips are on a same plane. The disclosed system uses a method to determine positions of target-hit points using a laser array and angles, which can increase efficiency, reduce cost, and avoid interferences from other electromagnetic or ultrasonic sources, thus being suitable for shooting training and matches.

What is claimed is: 
     
         1 . A laser electronic target system using non-overlapping and crossing rectangular laser screens, comprising:
 a bullet trap; and   a first and second rectangular laser screens generated in front of the bullet trap, wherein each of the first and second rectangular laser screens is generated by:
 a detachable laser transmitter; and 
 a laser receiver comprising a first sensor strip and a second sensor strip, 
   wherein a first end of the first sensor strip is perpendicularly connected to a second end of the second sensor strip,   wherein each sensor strip comprises 100 to 150 laser sensors, and   wherein the laser transmitter and the first and second sensor strips are on a same plane.   
     
     
         2 . The laser electronic target system of  claim 1 , wherein for each of the first and second rectangular laser screens, the laser transmitter has 100 mW power and emits visible line laser at 650 nm wavelength, and the emitted visible line laser projects in a triangle shape with a 120 degree vertex angle at the laser transmitter and irradiates evenly to the laser sensors of the perpendicular first and second sensor strips, and each of the sensor strips comprises 115 laser sensors with 1.8 mm spacing, wherein a responsive time for each laser sensor is less than 10 ns. 
     
     
         3 . The laser electronic target system of  claim 2 , wherein the visible line lasers emitted by the first and second laser transmitters respectively irradiate to the first and second laser receivers having perpendicular sensor strips. 
     
     
         4 . The laser electronic target system of  claim 1 , wherein for at least one of the first rectangular laser screens, the laser transmitter and the laser receiver are connected to a signal controller,
 wherein the signal controller comprises, successively connected, a filter for light receiving and signal preprocessing, a device for coordinate computing and data processing, a signal processor, and a data communicator, and   the filter for light receiving and signal preprocessing connects to the first and second sensor strips, and the signal processor connects to the laser transmitters.   
     
     
         5 . The laser electronic target system of  claim 1 , wherein the laser receivers of the first and second rectangular laser screens form a rectangular frame in a plane perpendicular to a center line of the bullet trap, and the laser transmitters of the first and second rectangular laser screens are positioned on a same edge of a rectangular frame. 
     
     
         6 . The laser electronic target system of  claim 1 , wherein the bullet trap comprises a shape of a square pyramid with the base removed. 
     
     
         7 . The laser electronic target system of  claim 1 , wherein the bullet trap comprises a bullet buffering member, wherein the bullet buffering member comprises a plurality of hanging chains and a sliding bullet receiver. 
     
     
         8 . A laser electronic targeting device, comprising:
 a casing;   a controller;   a first laser transmitter in communication with the controller and coupled to the casing, the first laser transmitter emitting a first laser defining a first plane;   a second laser transmitter in communication with the controller and coupled to the casing in a position different from the first laser transmitter, the second laser transmitter emitting a second laser defining a second plane different from the first plane, wherein the second laser transmitter is displaced from the first laser transmitter such that the second plane defined by the second laser is parallel to the first plane defined by the first laser;   a first laser receiver in communication with the controller and coupled to the casing, the first laser receiver being capable of receiving the first laser emitted by the first laser transmitter; and   a second laser receiver in communication with the controller and coupled to the casing, the second laser receiver capable of receiving the second laser emitted by the second laser transmitter.   
     
     
         9 . The laser electronic targeting device of  claim 8 , further comprising:
 a bullet trap, coupled to a support that is coupled to the casing, comprising:
 a housing with a first end located opposite a second end, wherein the first end of the housing defines a first opening having a first area, and the second end defines a second opening having a second area, the second area being lesser than the first area; 
 a bullet buffering member with a top surface located opposite a bottom surface, the bullet buffering member being coupled to the second end of the housing; and 
 a bullet collecting chamber coupled to the bottom surface of the bullet buffering member. 
   
     
     
         10 . The laser electronic targeting device of  claim 8 , wherein the first and second lasers emitted from the first and second laser transmitters are line laser beams. 
     
     
         11 . The laser electronic device of  claim 8 , wherein each laser receiver comprises a first laser sensor strip having a first end located opposite a second end and a second laser sensor strip having a third end located opposite a fourth end,
 wherein the first end of the first laser sensor strip is connected to the third end of the second sensor strip.   
     
     
         12 . The laser electronic device of  claim 11 , wherein the first and second laser receivers are connected. 
     
     
         13 . The laser electronic device of  claim 11 , wherein at least one laser sensor strip of the first and second laser receivers comprises 100 to 150 laser sensors. 
     
     
         14 . The laser electronic device of  claim 8 , wherein the first laser receiver is located on the first plane and the second laser receiver is located on the second plane. 
     
     
         15 . The laser electronic device of  claim 8 , wherein the controller comprises a filter for light receiving and signal preprocessing; a device for coordinate computing and data processing, a signal processing unit, and a data communicating device. 
     
     
         16 . The laser electronic device of  claim 8 , wherein the casing is rectangular, and the first and second laser transmitters are located on a same side of the casing. 
     
     
         17 . A laser electronic target system, comprising:
 a bullet trap; and   a plurality of laser screens generated in front of the bullet trap,
 wherein each of the plurality of laser screens is respectively in a plane mutually parallel to other laser screens, 
 wherein each of the plurality of laser screens is generated by a laser transmitter and a laser receiver, wherein the laser transmitter and the laser receiver are located on the plane that the laser screen resides in, and 
 wherein each laser transmitter of the plurality of laser screens emits laser in a direction different from other laser transmitters. 
   
     
     
         18 . The laser electronic target system of  claim 17 , wherein the laser receiver comprises a first sensor strip with a first end located opposite a second end and a second sensor strip with a third end located opposite a fourth end, and the first end of the first sensor strip is connected to the third end of the second sensor strip. 
     
     
         19 . The laser electronic target system of  claim 18 , wherein at least one sensor strip of the first and second laser receivers comprises 100 to 150 laser sensors. 
     
     
         20 . The laser electronic target system of  claim 17 , wherein the plurality of laser screens generated in front of the bullet trap is rectangular.