Abstract:
An imaging device and method are provided. Light from an object is provided as a plurality of sets of light beams to a phase difference array having a plurality of elements. The phase difference array is configured to provide different optical paths for light included within at least some of a plurality of sets of light beams. The light from the phase difference array is received at an imaging element array. The imaging element array includes a plurality of imaging elements. Information obtained from hyperspectral imaging data based on output signals of the imaging element array can be displayed.
Abstract:
Prism-coupling systems and methods for characterizing large depth- of-layer waveguides are disclosed. The systems and methods utilize a coupling prism having a prism angle a, which is defined by the coupling surface and the output surface and is in the range 0.81 α max α α max where the maximum coupling angle α max is given by the prism angle at which total internal reflection occurs. This configuration causes the more spaced-apart lower-order mode lines to move closer together and the more tightly spaced higher-order mode lines to separate. The adjusted mode-line spacing allows for proper sampling at the detector of the otherwise tightly spaced mode lines. The mode-line spacings of the detected mode spectra are then corrected via post-processing. The corrected mode spectra are then processed to obtain at least one characteristic of the waveguide.
Abstract:
Apparatus and methods for measuring mode spectra for ion-exchanged glass substrates having a steep index region are disclosed. An interfacing fluid is provided between the coupling prism and the glass substrate. The interfacing fluid thickness is selected so that the variation in modal birefringence with fluid thickness is reduced to an acceptable level. The coupling prism can include a prism coating on the coupling surface so that the substrate-prism interface includes the prism coating. The coupling prism can also include stand-off members that serve to define the thickness of the interfacing fluid.
Abstract:
각각의 셀이 제1 편광 방향을 가진 제1 편광 필터, 및 제1 편광 방향과 상이한 제2 편광 방향을 가진 제2 편광 필터를 포함하는, 하나의 어레이의 편광 필터 셀; 편광 필터 어레이 상으로 광을 지향시키기 위한 광학 시스템; 및 각각 제1 및 제2 편광 필터를 통해 수신된 광으로부터 데이터를 산출하기 위한 제1 및 제2 광 센서를 포함하는 장치가 개시된다. 또한, 각각의 셀이 제1 편광 방향을 가진 제1 편광 필터, 및 제1 편광 방향과 상이한 제2 편광 방향을 가진 제2 편광 필터를 포함하는, 하나의 어레이의 편광 필터 셀 상으로 광을 지향시키는 단계; 제1 및 제2 편광 필터를 통해 제1 및 제2 광 센서 각각에 의해 수신된 광으로부터 데이터를 산출하는 단계; 및 그 데이터를 기초로 편광 패턴을 도출하는 단계를 포함하는 방법이 개시된다.