Patent US2410538A successfully refreshed from Google Patents.
US4286328A
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US
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Incoherent optical ambiguity function generator
Assignee: United States Department of the Navy
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Filing: 1978-10-06
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Granted: 1981-08-25
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Expires: 1998-10-06
Abstract
Abstract An electro-optical system for performing the computation of the radar ambiguity function or other similar mathematical function using the parallel processing capability of optical systems including a photo-responsive, real-time programmable mask for storing a set of sample values {s p }. A light source is positioned to illuminate the mask and have its intensity modulated as a function of the sample values {s p }. The image from the programmable mask is transferred to a CCD photo-sensor array that is clocked in synchronism with the light pulse outputs of the light emitting diode to give rise to electro-optical products which are integrated in the CCD structure to yield the ambiguity or other similar mathematical function.
Inventors
- 👤 Richard P. Bocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G06E3/005
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
136 words
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU7## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a light source positioned to illuminate said photo-responsive programmable mask; said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s p }; a photographically recorded mask having encoded thereon information representative of the values {f pn }; an imaging lens positioned for transmitting light radiated by said photographically recorded mask; a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
Claim 2
Dependent Claim
136 words
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU7## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a light source positioned to illuminate said photo-responsive programmable mask; said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s p }; a photographically recorded mask having encoded thereon information representative of the values {f pn }; an imaging lens positioned for transmitting light radiated by said photographically recorded mask; a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
Claim 3
Dependent Claim
15 words
The system of claim 1 wherein said photo-sensor array comprises a CCD photo-sensor area array.
Claim 4
Dependent Claim
17 words
The system of claim 1 wherein said programmable mask comprises a matrix addressed liquid crystal light valve.
Claim 5
Dependent Claim
36 words
The system of claim 1 wherein said programmable mask comprises a line array light valve; said system further comprising a cylindrical/spherical lens positioned to be illuminated by the light transmitted by said line array light valve.
Claim 6
Dependent Claim
36 words
The system of claim 1 wherein said light source comprises: a light emitting diode; a condensing lens; and a beam splitter positioned to irradiate said programmable mask with the light output of said light emitting diode.
Claim 7
Dependent Claim
17 words
The system of claim 5 wherein said programmable mask comprises a matrix addressed liquid crystal light valve.
Claim 8
Dependent Claim
22 words
The system of claim 6 including a contrast control aperture positioned to be irradiated by the light output of said beam splitter.
Claim 9
Dependent Claim
13 words
The system of claim 7 wherein said light source generates incoherent light energy.
Claim 10
Dependent Claim
102 words
An electro-optical system for computing a mathematical function of the form ##EQU8## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively, comprising: a line array of light emitting diodes; a programmable weighting tap operably-coupled to each element of said line array of light emitting diodes; a cylindrical/spherical lens combination positioned to be illuminated by said light emitting diodes; and an optical CCD array having encoded thereon fixed information representative of the values {f pn } disposed to be irradiated by the light energy passing through said cylindrical/spherical lens combination.
Claim 11
Dependent Claim
102 words
An electro-optical system for computing a mathematical function of the form ##EQU8## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively, comprising: a line array of light emitting diodes; a programmable weighting tap operably-coupled to each element of said line array of light emitting diodes; a cylindrical/spherical lens combination positioned to be illuminated by said light emitting diodes; and an optical CCD array having encoded thereon fixed information representative of the values {f pn } disposed to be irradiated by the light energy passing through said cylindrical/spherical lens combination.
Claim 12
Dependent Claim
151 words
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU9## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a light source positioned to illuminate said photo-responsive programmable mask; said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s p }; a photographically recorded mask having encoded thereon information representative of the values {f pn }; a contrast control aperture assembly positioned between said light source and said photographically recorded mask; an imaging lens positioned for transmitting light radiated by said photographically recorded mask; a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
Claim 13
Dependent Claim
151 words
An electro-optical system for computing the mathematical function of the discrete sample form ##EQU9## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a light source positioned to illuminate said photo-responsive programmable mask; said light source being responsive to input signals for temporally modulating the intensity of the output of said light source as a function of the said values {s p }; a photographically recorded mask having encoded thereon information representative of the values {f pn }; a contrast control aperture assembly positioned between said light source and said photographically recorded mask; an imaging lens positioned for transmitting light radiated by said photographically recorded mask; a photo-sensor array positioned to be illuminated by the irradiance from said imaging lens.
Claim 14
Dependent Claim
27 words
The system of claim 5 wherein said light source further comprises a contrast control aperture positioned to be irradiated by the light output of said beam splitter.
Claim 15
Dependent Claim
104 words
An electro-optical system responsive to a source of light for computing the mathematical function of the discrete sample form ##EQU10## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively, comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a photographically recorded mask having encoded thereon information representative of the values {f pn }; an imaging lens positioned for transmitting light transmitted by said photographically recorded mask; and a photo-sensor array positioned to be illuminated by the transmitted light from said imaging lens.
Claim 16
Dependent Claim
104 words
An electro-optical system responsive to a source of light for computing the mathematical function of the discrete sample form ##EQU10## where {s p } and {x mn } are sets of numbers representing sampled values of the functions s(t) and x(τ,w), respectively, comprising: a photo-responsive programmable mask for storing said sampled values of {s p } of the signal s(t); a photographically recorded mask having encoded thereon information representative of the values {f pn }; an imaging lens positioned for transmitting light transmitted by said photographically recorded mask; and a photo-sensor array positioned to be illuminated by the transmitted light from said imaging lens.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |