Patent ID: 6603534
Filing Date: 2003-08-05
Classification: G01C,G01S

Abstract:
A laser range finding device for measuring the distance of an object at a large measuring range comprising:a transmitting channel comprising: a transmitting lens disposed within said transmitting channel; a laser light source arranged at a focal point of said transmitting lens for producing a laser beam directed at the object; and a receiving channel arranged parallel to said transmitting channel with a spacing â€œaâ€  from each other and comprising: a receiving lense disposed within said receiving channel; a receiving arrangement located in a focal plane of said receiving lens, wherein said receiver arrangement is a photodiode chip array comprising at least two active photodiode surfaces arranged in a straight line, with their alignment being determined by the spacing â€œaâ€ ; and wherein said active photodiode surface located closest to said laser light source is spaced from said laser light source with a spacing â€œaâ€  so that said receiver arrangement can detect a laser beam sent from the transmitting channel and reflected off of the object to determine the distance of the object from the device by reading a size of a reproduction circle.