Compact modular transfer function evaluation system
AssigneeTRW Automotive U.S. LLC
InventorsShaoying Kang, Robert J. Newton, Marwan Waheed, Michael L. Babala, Mohammad Masud Siraj
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Abstract
A system for evaluating the modulation transfer function (MTF) of a device under test is provided. The system includes an image projector configured to provide light in a pattern representing a desired image. The system further includes a lens configured to direct the provided light toward the device under test as a collimated beam. An image analysis component calculates the MTF for the device under test from the at least one image taken at the device under test and the known characteristics of the image projector and the lens.
Claims8
A system for evaluating the modulation transfer function (MTF) of a device under test, comprising:
- an image projector configured to provide light in a pattern representing a desired image;
- a lens configured to direct the provided light toward the device under test as a collimated beam;
- an image analysis component configured to calculate the MTF for the device under test from the at least one image taken at the device under test and the known characteristics of the image projector and the lens, each of the image projector and the lens being positioned within a housing to form a target source configured to project a desired target to an aperture of the device under test;
- and
- a plurality of target sources, each comprising an image projector and a lens, the plurality of target sources being positioned such that each of the target sources is substantially equidistant from the device under test, the distance from each target source to the device under test being less than two percent of a hyper-focal distance of the device under test.
Dependencies are inferred from the claim text.