Specific Density Detector with Electro Mechanical Actuator and Improved Mirror

Abstract

An object is placed at a particular distance away from the nonreflecting side of a mirror, such that the gravitational force of the object affects the mirror. A laser is then pointed at the opposite, reflecting side of the mirror, thereby itself reflecting off the mirror and going back in to the cavity of the laser, creating a mode-hopping effect. The mirror will be affected by three forces, the force of a spring (F S ), the force of a modulating signal (F MS ), created by an electro mechanical device attached to the mirror, and the gravitational force of objects as they approach and recede away from the mirror.

1 . A specific density detector, comprising: 
 a laser, having a cavity;    a first laser beam, produced by said laser; and    a mirror, positioned to reflect said first laser beam as a second laser beam back into said cavity.    
   
   
       2 . The specific density detector of  claim 1 , further comprising a microprocessor in communication with said laser.  
   
   
       3 . The specific density detector of  claim 2 , further comprising a spring in communication with said mirror.  
   
   
       4 . The specific density detector of  claim 1 , further comprising a slit disposed between said laser and said mirror.  
   
   
       5 . The specific density detector of  claim 1 , wherein said laser is a semi conductor laser.  
   
   
       6 . The specific density detector of  claim 2 , wherein said microprocessor is configured to determine mode hopping.  
   
   
       7 . The specific density detector of  claim 6 , wherein said microprocessor is configured to measure mode hopping.  
   
   
       8 . The specific density detector of  claim 7 , wherein said microprocessor is configured to measure mode hopping over time.  
   
   
       9 . The specific density detector of  claim 7 , wherein said microprocessor is configured to measure lack of mode hopping over time.  
   
   
       10 . The specific density detector of  claim 7 , wherein said microprocessor is configured to compare the second derivative of mode hopping with the second derivative of mode hopping with real objects.  
   
   
       11 . The specific density detector of  claim 2 , further comprising a collimating lens.  
   
   
       12 . The specific density detector of  claim 2 , wherein said mirror is configured to change angle when an object passes behind said mirror.  
   
   
       13 . The specific density detector of  claim 12 , wherein said change of angle is compared to the change of angle when a real object passes behind said mirror.  
   
   
       14 . The specific density detector of  claim 1 , wherein mirror is configured to move in response to passing an object behind said mirror.  
   
   
       15 . The specific density detector of  claim 14 , wherein mirror is configured to be mounted in a flexible fashion.  
   
   
       16 . The specific density detector of  claim 1 , further comprising an electro mechanical actuator in communication with said mirror.  
   
   
       17 . The specific density detector of  claim 16 , wherein said electro mechanical actuator is an amplifier that is configured to overlay a regular signal in the 1 to 10 khz range on a permanent signal created by gravitational force of an object passing behind said mirror.  
   
   
       18 . The specific density detector of  claim 14 , wherein said mirror is magnetically suspended.  
   
   
       19 . The specific density detector of  claim 14 , wherein said mirror is configured to return to its original position through the use of magnetism.  
   
   
       20 . A method for detecting specific density, comprising: 
 firing a first laser beam at a front side of a mirror, said first laser beam fired from a cavity;    passing an object past a backside of said mirror;    measuring mode hopping in said cavity;    plotting a second laser beam, said second laser beam being said first laser beam reflected from said mirror, as a function of the changing gravitational force of said object;    determining a second derivative from plotting said laser beam as a function of the changing gravitational force of said object;    determining a specific density of said object in proportion to said second derivative;    mounting said mirror so that said mirror moves in response to passing the object past the backside of said mirror; and    identifying said object based on the specific density of said object.    
   
   
       21 . A specific density detector, comprising: 
 a laser, having a cavity;    a first laser beam, produced by said laser;    a mirror, positioned to reflect said first laser beam as a second laser beam back into said cavity;    a microprocessor in communication with said laser;    wherein said microprocessor is configured to determine mode hopping;    wherein said microprocessor is configured to measure mode hopping;    wherein said microprocessor is configured to measure mode hopping over time;    wherein said microprocessor is configured to measure lack of mode hopping over time; and    wherein said microprocessor is configured to compare the second derivative of mode hopping with the second derivative of mode hopping with real objects.