Method for anisotropically realizing flat-plate negative refraction imaging based on uniaxial crystals

• Main Authors: MA HUALI, XU PEI, YUAN QIULIN, ZHANG YOULIN, ZENG FANGUANG, DU YINXIAO
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2012
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The invention provides a method for anisotropically realizing flat-plate negative refraction imaging based on uniaxial crystals, comprising the following steps of: based on that the uniaxial crystals have the intrinsic characteristic of negative refraction, bonding four uniaxial-crystal rectangular blocks through direct bonding technology, thereby realizing flat-plate negative fraction imaging, wherein the four uniaxial-crystal rectangular blocks are the same in dimension; six surfaces of each uniaxial-crystal rectangular block are all optically polished; and all of the four uniaxial-crystal rectangular blocks are cut at cutting angles of -theta 0, theta 0, -theta 0 and theta 0 along an optical axis. The negative fraction characteristic of the uniaxial crystals is intrinsically caused by anisotropy of the refractive indexes of crystals. The producing mechanism of the flat-plate negative refraction imaging of the uniaxial crystals depends on the cutting angles and birefringent indexes of the crystals. The meth