Detachable sight with momentary switch of light with control logic

Abstract

In one aspect, a sight with a momentary switch to control a laser beam on the sight may include a momentary sensor, a plurality of locking screw to lock the sight onto a firearm, a laser sight, a push button switch, a charging socket, and a laser adjustment screw. When in use, the user can press the push button switch to turn on the sight. In one embodiment, the momentary sensor can emit infrared light and if the infrared light is deflected, the laser beam will be turned off. So, if the user wants to turn off the laser beam, the user can simply move the finger toward the momentary sensor to somewhat covers the momentary sensor to deflect the infrared light emitting therein.

What is claimed is: 
     
         1 . A sight for a firearm comprising:
 a main body;   a laser sight that emits a laser beam; and   a switch with a momentary sensor to control the laser beam;   wherein the momentary sensor is configured to periodically emit a testing light with a predetermined frequency and detect the strength of a reflexed testing light to determine whether to temporarily shut off the laser beam.   
     
     
         2 . A sight for a firearm of  claim 1 , wherein the laser beam can be shut off when the testing light is deflected to cause the change of the strength of the reflexed testing light. 
     
     
         3 . A sight for a firearm of  claim 1 , wherein the testing light is an infrared light. 
     
     
         4 . A sight for a firearm of  claim 1 , further comprising a plurality of locking screws to lock the sight onto the firearm. 
     
     
         5 . A sight for a firearm of  claim 4 , further comprising a laser adjustment screw, and a charging socket. 
     
     
         6 . A sight for a firearm of  claim 2 , wherein the testing light can be deflected by a user's finger to shut off the laser beam. 
     
     
         7 . A sight for a firearm of  claim 5 , wherein sight can be charged with a USB charging cable through the charging socket. 
     
     
         8 . A sight for a firearm of  claim 1 , wherein the switch has to be ON to trigger the momentary sensor.