Miniature hybrid optical imaging lens
- 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:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- 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
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Related Subjects
hybrid
optical
imaging
lens
corrects
chromatic
aberrations
fabricated
primarily
commercially-available
components
element
input
housing
aperture
stop
refractive
diffractive
closely
coupled
formed
rear
surface
spaced
baffle
limit
image
followed
provide
final
correction
corrected
exits
impinge
detector
plane
positioned
desired
array
according
equation
variables
design
wavelength
index
refraction
radius
axis
optical axis
optical imaging
rear surface
optical element
detector array
diffractive element
closely coupled
active element
refractive element
spaced close
spaced closely
fabricated according
hybrid optical
imaging lens
chromatic aberration
lens element
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