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US 5,982,954 AGranted
Optical field propagation between tilted or offset planes
AssigneeUniversity Technology Corporation
InventorsNuri Delen, Brian Hooker
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AssigneeUniversity Technology Corporation
InventorsNuri Delen, Brian Hooker
Estimating the term…
This invention provides a method and apparatus for analyzing the propagation of optical fields between arbitrarily oriented planes using full scalar diffraction theory. One aspect of the invention allows propagation between tilted planes. A second aspect allows propagation between offset planes. To analyze the propagation of an input optical field from a first plane to a second plane, the input field in the spatial domain is Fourier transformed to obtain the plane wave distribution in the spatial frequency domain. Within the spatial frequency domain the field is propagated from the first plane to the second plane by first multiplying the plane wave distribution by the spatial frequency domain phase accumulation between the first and second planes, and then converting the plane wave distribution from the coordinate system of the first plane to that of the second plane. Finally, the propagated plane wave distribution is inverse Fourier transformed to obtain the propagated optical field. This propagation sequence forms the building block for a numerical method to analyze optical systems using full scalar diffraction theory. To analyze optical systems, the input field is propagated from the plane of the source to the plane of the first optical element and the propagated optical field is multiplied by the transmittance function of the optical element. This invention further includes tolerance analysis of each parameter that affects the image quality and coupling efficiency of the optical system.
A computer implemented method, for use in the design or evaluation of optical systems, of analyzing the propagation of an optical field from a first plane having a first coordinate system to a second plane having a second coordinate system, said second coordinate system tilted or offset with respect to said first coordinate system, said method comprising the propagation sequence having the steps of:
A computer having stored in memory a means for analyzing the propagation of an optical field from a first plane having a first coordinate system to a second plane having a second coordinate system, said second coordinate system tilted or offset with respect to said first coordinate system, said means comprising:
A computer readable storage device having stored thereon a means for analyzing the propagation of an optical field from a first plane having a first coordinate system to a second plane having a second coordinate system, said second coordinate system tilted or offset with respect to said first coordinate system, said means comprising:
Dependencies are inferred from the claim text.