公开(公告)号：US20100245694A1

公开(公告)日：2010-09-30

申请号：US12795974

申请日：2010-06-08

申请人： Chandra S. Yelleswarapu ,  Sri R. Kothapalli ,  D. V. Gopal L.N. Rao

发明人： Chandra S. Yelleswarapu ,  Sri R. Kothapalli ,  D. V. Gopal L.N. Rao

IPC分类号： G02F1/133 ,  G02B21/00

CPC分类号： G02B21/14 ,  G02B27/52 ,  G02F1/132 ,  G02F1/13725

摘要： An assembly for converting a microscope into a phase contrast microscope includes a first optical Fourier element that Fourier transforms light from a coherent light source, a cell in the Fourier plane arranged to receive light from the first optical Fourier element, a second optical Fourier element arranged to receive light from the cell and inversely Fourier transform the received light to provide an image, an image sensor that detects the image and generates an electronic representation of the image, and an adaptor capable of coupling the first and second Fourier elements, the cell, and the image sensor to the microscope such that the first Fourier element Fourier transforms light collected by the microscope objective. The cell includes liquid crystal molecules having a phase transition temperature, wherein at temperatures exceeding the phase transition temperature, light transmitting through the liquid crystal molecules obtains a different phase than light transmitting through the liquid crystal molecules at temperatures below the phase transition temperature.

摘要翻译： 用于将显微镜转换成相差显微镜的组件包括傅里叶变换来自相干光源的光的第一光学傅里叶变换元件，布置成从第一光学傅里叶变换元件接收光的傅立叶平面中的单元，布置成 从单元接收光并对接收的光进行逆傅里叶变换以提供图像;图像传感器，其检测图像并生成图像的电子表示;以及适配器，其能够耦合第一和第二傅立叶元件，单元， 和图像传感器到显微镜，使得第一傅里叶元素傅里叶变换由显微镜物镜收集的光。 电池包括具有相变温度的液晶分子，其中在超过相变温度的温度下，透过液晶分子的光获得与低于相变温度的温度下透过液晶分子的光的不同相位。

公开(公告)号：US20080174860A1

公开(公告)日：2008-07-24

申请号：US11935910

申请日：2007-11-06

申请人： Chandra S. YELLESWARAPU ,  Sri R. KOTHAPALLI ,  D.V.G.L.N. RAO

发明人： Chandra S. YELLESWARAPU ,  Sri R. KOTHAPALLI ,  D.V.G.L.N. RAO

IPC分类号： G02B21/14

CPC分类号： G02B21/14 ,  G02B27/52 ,  G02F1/132 ,  G02F1/13725

摘要： Under one aspect, a phase contrast imaging system includes a coherent light source emitting a coherent beam directed toward a sample area; a lens arranged to collect at least part of the beam from the sample area; an element Fourier transforming the collected beam in a Fourier plane; a liquid crystal cell in the Fourier plane that transmits at least part of the transformed beam, wherein the cell includes liquid crystal molecules having a phase transition temperature, and wherein at temperatures exceeding the phase transition temperature, light transmitted through the liquid crystal molecules obtains a different phase than light transmitted through the liquid crystal molecules obtains at temperatures below the phase transition temperature; and an element inversely Fourier transforming the transmitted beam to provide an image. Part of the transformed beam has an intensity sufficient to heat a portion of the liquid crystal molecules above the phase transition temperature.

摘要翻译： 在一个方面，相位对比成像系统包括发射朝向样本区域的相干光束的相干光源; 透镜，布置成从样品区域收集至少一部分光束; 在傅立叶平面中傅里叶变换收集的光束的元素; 透射至少部分变换光束的傅立叶平面中的液晶单元，其中，所述单元包括具有相变温度的液晶分子，并且其中在超过相变温度的温度下，透过液晶分子的光获得 不同于透过液晶分子的光在低于相变温度的温度下获得; 以及将透射光束逆傅立叶变换以提供图像的元素。 变换束的一部分具有足以将一部分液晶分子加热到相转变温度以上的强度。