US3597618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground base target for testing electrooptical sensors in the infrared and visible range
Assignee: United States Department of the Navy
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Filing: 1969-08-15
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Granted: 1971-08-03
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Expires: 1989-08-15
Abstract
Abstract An array of bars of aluminum sheet material of triangular cross section to be used as a target for testing infrared or television equipment. The three sides of each bar are painted white, black and alternating black and white stripes with one side heated so as to provide an IR source. In addition, each bar is rotatable about its longitudinal axis so that the target provides for a broad range of light and temperature contrasts.
Inventors
- 👤 Robert J Jordan
- 👤 Ronald N Phillips
- 👤 Robert R Shatzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/12; G01; G01M; G01M11/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A target for testing electro-optical sensors, comprising: a frame; and a plurality of bars mounted for independent rotation on said frame, each of said bars having more than one functional side and each of said functional sides having a different coloring from any adjacent functional side on the same bar; whereby various target patterns can be created by selective rotation of the bars to position a selected one of said functional sides in a stationary functional position.
Claim 2
Dependent Claim
77 words
A target for testing electro-optical sensors, comprising: a frame; and a plurality of bars mounted for independent rotation on said frame, each of said bars having more than one functional side and each of said functional sides having a different coloring from any adjacent functional side on the same bar; whereby various target patterns can be created by selective rotation of the bars to position a selected one of said functional sides in a stationary functional position.
Claim 3
Dependent Claim
16 words
The target of claim 1 wherein each of said bars is constructed from aluminum sheet material.
Claim 4
Dependent Claim
31 words
The target of claim 1 further comprising a heating means within each of said bars for providing an infrared target, said heating means being placed behind one of said functional sides.
Claim 5
Dependent Claim
29 words
The target of claim 1 wherein said bar has a triangular cross section and three functional sides, the coloring of the functional sides being white, black and white-black striped.
Claim 6
Dependent Claim
21 words
The target of claim 4 wherein a heating means is placed behind the white colored side to provide an infrared target.
Claim 7
Dependent Claim
16 words
The target of claim 5 wherein each of said bars is constructed from aluminum sheet material.
Claim 8
Dependent Claim
30 words
The target of claim 1 wherein the coloring of any functional side on a given bar is different from the coloring of any other functional side on the same bar.
Claim 9
Dependent Claim
29 words
The target of claim 7 wherein each bar has a triangular cross section and three functional sides, the coloring of the functional sides being white, black and white-black striped.
Claim 10
Dependent Claim
21 words
The target of claim 8 further comprising a heating means placed behind the white functional side to provide an infrared target.
Claim 11
Dependent Claim
14 words
The target of claim 9 wherein each bar is constructed from aluminum sheet material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |