A C Akcay,K S Lee,L R Furenlid et al.
A C Akcay et al.
A compact and low-cost detection electronics scheme for optical coherence imaging is demonstrated. The performance of the designed electronics is analyzed in comparison to a commercial lock-in amplifier of equal bandwidth. Images of a fresh...
Wan Qin,Xiang Peng,Xiangfeng Meng et al.
Wan Qin et al.
We propose a novel optical asymmetric cryptosystem based on a phase-truncated Fourier transform. Two decryption keys independent of each other are generated. They are referred to as universal key and special key, respectively. Each of them ...
Correction of vignetting and distortion errors induced by two-axis light beam steering [0.03%]
两轴光束偏转引起的暗角和畸变误差校正方法研究
Liang Gao,Tomasz S Tkaczyk
Liang Gao
A mirror facet's angle correction approach is presented for eliminating pupil plane distortions and sub-field image vignetting in the image mapping spectrometry (IMS). The two-axis light reflection problem on the image mapper is solved and ...
Digital holographic measurements of shape and 3D sound-induced displacements of Tympanic Membrane [0.03%]
数字全息测量鼓膜的形状和三维声致位移
Morteza Khaleghi,Weina Lu,Ivo Dobrev et al.
Morteza Khaleghi et al.
Acoustically-induced vibrations of the Tympanic Membrane (TM) play a primary role in the hearing process, in that these motions are the initial mechanical response of the ear to airborne sound. Characterization of the shape and 3D displacem...
Impact of high power and angle of incidence on prism corrections for visual field loss [0.03%]
高功率和入射角对视野缺损透镜矫正的影响
Jae-Hyun Jung,Eli Peli
Jae-Hyun Jung
Prism distortions and spurious reflections are not usually considered when prescribing prisms to compensate for visual field loss due to homonymous hemianopia. Distortions and reflections in the high power Fresnel prisms used in peripheral ...
Tetrahedron-based orthogonal simultaneous scan for cone-beam computed tomography [0.03%]
基于四面体的锥束CT正交等距扫描重建算法研究
Ivan B Ye,Ge Wang
Ivan B Ye
In this article, a cone-beam computed tomography scanning mode is designed using four x-ray sources and a spherical sample. The x-ray sources are mounted at the vertices of a regular tetrahedron. On the circumsphere of the tetrahedron, four...
Vulnerability to chosen-plaintext attack of optoelectronic information encryption with phase-shifting interferometry [0.03%]
具有移相干涉的光电信息加密方案易受明文攻击
Wan Qin,Xiang Peng,Xiangfeng Meng et al.
Wan Qin et al.
The optical cryptosystem based on phase-shifting interferometry (PSI) is one of the most interesting optical cryptographic schemes in recent years. However, we find that the PSI technique provides an attractive method to record the cipherte...
Noah Bedard,Nathan Hagen,Liang Gao et al.
Noah Bedard et al.
Image mapping spectrometry (IMS) is a hyperspectral imaging technique that simultaneously captures spatial and spectral information about an object in real-time. We present a new calibration procedure for the IMS as well as the first detail...
Snapshot advantage: a review of the light collection improvement for parallel high-dimensional measurement systems [0.03%]
“快照优势”——并行高维测量系统中提升光收集效率综述
Nathan Hagen,Robert T Kester,Liang Gao et al.
Nathan Hagen et al.
The snapshot advantage is a large increase in light collection efficiency available to high-dimensional measurement systems that avoid filtering and scanning. After discussing this advantage in the context of imaging spectrometry, where the...
Fabrication of plastic microlens array for array microscopy by three-dimensional diamond micromilling [0.03%]
利用三维金刚石铣削技术制造用于阵列显微镜的塑料微透镜阵列
Brian McCall,Tomasz S Tkaczyk
Brian McCall
Two lens arrays of 20 lenses (4×5) are fabricated in polystyrene (Rexolite 1422) using a 3-D, three-axis micromilling process. The lenses of one array are concave (R(curv) = -2 mm) and the lenses of the other array are convex (R(curv) = 2 ...