Search Results - jannick rolland

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Absolute Linear-in-K Spectrometer Using Freeform Optics
We present an optical design method and solutions of linear-in-k spectrometers exhibiting extremely low residual nonlinearity (< 10E-4%) made possible by the inclusion of a freeform optics. Previous work in the literature shows that hardware-based solutions for k-linearization by adding a prism after the grating have residual non-linearity. The merit...
Published: 11/15/2019   |   Inventor(s): Jannick Rolland, Aaron Bauer, Changsik Yoon
Keywords(s):  
Category(s): Optics, Devices
(CeFO) Cascade Fourier Domain Optical Coherence Tomography for the Metrology of Optical Components Including Freeform
A cascaded interferometric system for Fourier domain optical coherence tomography (OCT) in which the output of one sub-system interferometer is directed through a second sub-system interferometer for performing the Fourier transform in hardware.
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Di Xu
Keywords(s):  
Category(s): Optics
maging spectrometer with freeform surfaces
"Expanded performance opportunities for imaging spectrometers are described using ϕ-polynomial freeform surfaces in reflective and diffractive optics. The imaging spectrometers are generally of a type that include an entrance aperture for admitting radiation over a range of wavelengths, a detector array, a primary reflective optic with optical power,...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Jacob Reimers
Keywords(s):  
Category(s): Optics
Freeform and Nanostructured Surfaces Based Augmented Reality Sunglass Display
A near eye display includes at least one of a combiner, a secondary mirror, and a waveguide having a freeform nanostructured surface. The freeform nanostructured surface encompasses a freeform surface, a nanostructured surface or a combination of both the freeform surface and the nanostructured surface. The freeform nanostructured surface can be incorporated...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Nick Vamivakas, Alexander Kitt, Aaron Bauer
Keywords(s): Nano-optics, Optical Network
Category(s): Optics, Nanotechnology, Imaging
An Imaging Spectrometer Apparatus with Freeform Optics
A full-field display for spectrally dispersive imaging optics, particularly as a design tool for evaluating optical designs including designs with freeform optical surfaces, includes a ray tracing module arranged for modeling local aberrations throughout the image field of the spectrometer and a display module that converts values of the modeled local...
Published: 11/14/2019   |   Inventor(s): Jannick Rolland, Jacob Reimers
Keywords(s):  
Category(s): Optics
Compact, Fast, Large Field of View, Three-Mirror Imager and Modular Test Apparatus for Phi-Polynomial Surfaces
Applications: The technology could be used as a long wave infrared imaging system that can have a compact geometry while providing a superior focal ratio and field of view then those of existing imagers of similar size. It also has the potential to be scaled and used for larger systems or in multiple wavelength band instruments.Advantages: Current long...
Published: 4/25/2019   |   Inventor(s): Jannick Rolland, Kyle Fuerschbach
Keywords(s):  
Category(s): Imaging, Optics
Dual-Detection of Phase for Full Range Doppler OCT
A dual detection technique for Optical Coherence Tomography (OCT) preserves the phase information in the acquired spectra by the retrieval of quadrature components of the complex interferometric signal. A rotatable non-polarizing beam splitter cube provides the required p/2 phase shifted interference signal.ApplicationsOptical coherence tomography (OCT)...
Published: 5/4/2010   |   Inventor(s): Kye-Sung Lee, Panomsak Meemon, Jannick Rolland
Keywords(s):  
Category(s): Diagnostic, Optics