Dynamic optical tag
First Claim
1. An optical tag, comprising:
- a) a photo-detector responsive to an incident optical energy at a predetermined wavelength;
b) a controller in electrical communication with the photo-detector;
c) a piezoelectric translator in electrical communication with the controller;
d) a battery in electrical communication with the piezoelectric translator; and
e) a reflective tape in mechanical communication with the piezoelectric translator.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical tag, having a photo-detector, a controller, a piezoelectric translator, a battery and a retro-reflective tape. The photo-detector is responsive to an optical energy at a predetermined wavelength, and the controller is connected to the output of the photo-detector. The piezoelectric translator connected to controller is also connected to the battery when the photo-detector responds to the optical energy. The retro-reflective tape is directly mounted on the piezoelectric translator. When the connection between the piezoelectric translator and the battery is established, a pulse is generated and applied to the retro-reflective tape. Therefore, the optical energy incident on the retro-reflective tape is modulated by the pulse and retro-reflected by the retro-reflective tape.
-
Citations
37 Claims
-
1. An optical tag, comprising:
-
a) a photo-detector responsive to an incident optical energy at a predetermined wavelength;
b) a controller in electrical communication with the photo-detector;
c) a piezoelectric translator in electrical communication with the controller;
d) a battery in electrical communication with the piezoelectric translator; and
e) a reflective tape in mechanical communication with the piezoelectric translator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An optical tag, comprising:
-
a piezoelectric translator operative to generate a pulse when an optical energy at a predetermined wavelength is incident on the optical tag; and
a retro-reflective tape in contact with the piezoelectric translator, the retro-reflective tape being operative to modulate phase of the optical energy according to the pulse generated by the piezoelectric translator and retro-reflect the modulated optical energy incident thereon. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
-
26. An interrogating system, comprising:
-
an interrogating beam source, operative to scan an interrogating beam with a predetermined wavelength through a field; and
an optical tag, operative to respond the optical signal with an identification code, wherein the optical tag comprising;
a piezoelectric translator, operative to generate a pulse for modulating the optical signal; and
a retro-reflective tape, operative to modulate the optical signal with the identification code according to the pulse and retro-reflect the modulated optical signal back to the interrogating beam source. - View Dependent Claims (27, 28, 29, 30, 31)
-
-
32. A method of interrogating a target from an airborne platform, comprising:
-
generating a optical signal at a predetermined wavelength;
converting the optical signal into a photocurrent;
generating a pulse in response to the photocurrent;
modulating the optical signal with an identification according the pulse; and
retro-reflecting the modulated optical signal. - View Dependent Claims (33, 34, 35, 36, 37)
-
Specification