EP0848273A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Conformal window design with static and dynamic aberration correction
Assignee: Raytheon Co
•
Filing: 1997-10-03
•
Granted: —
•
Expires: 2017-10-03
Abstract
Abstract A system for correcting optical aberration created by a conformal window has a conformal window (12) with an outer surface (26) and an inner surface (28). The inner surface (28) is an aspheric surface for compensating for higher order aberrations. An aberration generator (16) is aligned to receive input from the conformal window (12) and dynamically corrects lower order aberrations, notably focus and astigmatism, over the field of regard. <IMAGE>
Inventors
- 👤 Darcy J. Morgan
- 👤 Lacy Cook
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 11:02
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/0025; G02B26/00; G02B26/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
A system (10) for correcting optical aberration created by a
conformal window comprising: a conformal window (12) having an outer surface (26) and an
inner surface (28), said inner surface (28) being aspheric for compensating
for higher order aberrations; and an aberration generator (16) aligned to receive input from said
conformal window (12), which dynamically corrects aberrations over the
field of regard, said aberration generator compensating for lower order
aberrations.
Claim 2
Dependent Claim
47 words
A conformal window (12) for compensating for optical
aberration comprising: a window (12) having an outer surface (26) and an inner
surface (28) , said outer surface (26) having a configuration to optimize
aerodynamic properties, said inner surface (28) being aspheric for
compensating for higher order aberrations.
Claim 3
Dependent Claim
106 words
An optical sensor assembly (10) comprising: a conformal window (12) including an outer (26) and inner
(28) surface, said inner surface (28) being aspheric for compensating for
higher order aberrations; an aberration generator (16) aligned to receive input from said
conformal window (12), dynamically correcting aberrations over field of
regard, said aberration generator (16) compensating for lower order
aberrations; and an optical system (18) having a field of regard and aligned
with said aberration generator (16) such that said conformal window inner
surface (28) and aberration generator (16) compensate for optical
aberration created at every position within the field of regard of the optical
sensor (10).
Claim 4
Independent Claim
28 words
The system according to Claims 1 or 3, wherein said
aberration generator (16) includes at least two lenses (30, 32, 34), said
lenses being axially and rotatably movable.
Claim 5
Dependent Claim
16 words
The system according to Claim 4, wherein said aberration
generator (16) compensates for focus and astigmatism.
Claim 6
Independent Claim
26 words
The system according to Claims 1 through 3, wherein said
conformal window outer surface (26) being an off-axis portion of a
paraboloid for improving aerodynamic performance.
Claim 7
Independent Claim
22 words
The system according to Claims 1 through 3, wherein said
conformal window inner surface (28) being a bilaterally symmetric Zernike
described aspheric.
Claim 8
Dependent Claim
16 words
The conformal window according to Claims 1 through 3,
wherein the inner surface (28) is parabolic.
Claim 9
Dependent Claim
58 words
The conformal window according to Claims 1 through 3,
wherein the inner surface (28) is defined by a Zernike polynomial where Z = c ρ 2 /[1+ 1-( k +1) c 2 ρ 2 ]+ d ρ 4 + e ρ 6 + f ρ 8 + g ρ 10 + i =1 24 S i Z i
Claim 10
Dependent Claim
26 words
The optical sensor assembly according to Claims 1 or 3,
wherein said aberration generator (16) includes three lenses (30, 32, 34)
being axially and rotatably movable.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.