Opto-electronic measuring apparatus, particularly for a projectile detonator
AssigneeDiehl GmbH & Co.
InventorsUno Muller, Dietmar Stutzle
Life of this patent
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Abstract
An opto-electronic measuring apparatus, in particular for a projectile detonator, for the delivery of a signal upon the reaching of a predetermined distance between a moving body and a surface, whereby the measuring apparatus incorporates a transmitter emitting impulses which are rendered optical through a lens at a transmission frequency; and a receiver with a receiver-amplifier for receiving the portion of these optical impulses which are scattered back from the surface.
Claims7
In an opto-electronic measuring apparatus, in particular for a projectile detonator, for the delivery of a signal upon the reaching of a predetermined distance between a moving body and a surface;
- including a transmitter emitting signals at a transmitting frequency;
- a first lens rendering said impulses optical;
- a second lens for focusing a scattered-back portion of the optical impulses from the surface;
- and a receiver having a receiver-amplifier for receiving the scattered-back optical impulses, the improvement comprising:
- a band-pass filter having a narrow frequency pass range connected to the output of said receiver-amplifier;
- a regulating circuit connected intermediate said band-pass filter and said transmitter for correlating the median frequency of the frequency pass range of the band-pass filter and the transmitting frequency of the transmitter;
- and an evaluating circuit connected to the output of said band-pass filter for delivery of said signal.
Dependencies are inferred from the claim text.