Miniature hybrid optical imaging lens

Patent · Tue Dec 31 23:00:00 EST 1996

OSTI ID:871199

Simpson, Marc L ^[1]

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1. Knoxville, TN

A miniature lens system that corrects for imaging and chromatic aberrations, the lens system being fabricated from primarily commercially-available components. A first element at the input to a lens housing is an aperture stop. A second optical element is a refractive element with a diffractive element closely coupled to, or formed a part of, the rear surface of the refractive element. Spaced closely to the diffractive element is a baffle to limit the area of the image, and this is closely followed by a second refractive lens element to provide the final correction. The image, corrected for aberrations exits the last lens element to impinge upon a detector plane were is positioned any desired detector array. The diffractive element is fabricated according to an equation that includes, as variables, the design wavelength, the index of refraction and the radius from an optical axis of the lens system components.

• Research Organization: LOCKHEED MARTIN ENRGY SYST INC
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5680252
• OSTI ID: 871199
• Country of Publication: United States
• Language: English

Related Subjects

/359/
aberrations
according
active element
aperture
array
axis
baffle
chromatic
chromatic aberration
closely
closely coupled
commercially-available
components
corrected
correction
corrects
coupled
design
desired
detector
detector array
diffractive
diffractive element
element
equation
exits
fabricated
fabricated according
final
followed
formed
housing
hybrid
hybrid optical
image
imaging
imaging lens
impinge
index
input
lens
lens element
limit
miniature
optical
optical axis
optical element
optical imaging
plane
positioned
primarily
provide
radius
rear
rear surface
refraction
refractive
refractive element
spaced
spaced close
spaced closely
stop
surface
variables
wavelength