نتایج جستجو برای: optical imaging system

تعداد نتایج: 2807792  

2012
Sri-Rajasekhar Kothapalli Hongguang Liu Joseph C. Liao Zhen Cheng Sanjiv Sam Gambhir

We demonstrate feasibility of endoscopic imaging of Cerenkov light originated when charged nuclear particles, emitted from radionuclides, travel through a biological tissue of living subjects at superluminal velocity. The endoscopy imaging system consists of conventional optical fiber bundle/ clinical endoscopes, an optical imaging lens system, and a sensitive low-noise charge coupled device (C...

2002
W. Thomas Cathey Edward R. Dowski

Today’s imaging systems today frequently have digital components, and some image processing is done in the camera. The potential for dramatically increased perfor­ mance is not realized, however, until the complete imaging system, including the optics and signal processing, is designed as a coherent whole. In such a system, the optics produces an intermediate image, and the final image is produ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1387

چکیده ندارد.

Journal: :Journal of biomedical optics 2006
Zahid Yaqoob Jigang Wu Emily J McDowell Xin Heng Changhuei Yang

We review the current state of research in endoscopic optical coherence tomography (OCT). We first survey the range of available endoscopic optical imaging techniques. We then discuss the various OCT-based endoscopic methods that have thus far been developed. We compare the different endoscopic OCT methods in terms of their scan performance. Next, we examine the application range of endoscopic ...

Journal: :Optics express 2012
Changbao Ma Zhaowei Liu

Optical lenses are pervasive in various areas of sciences and technologies. It is well known that conventional lenses have symmetrical imaging properties along forward and backward directions. In this letter, we show that hyperbolic plasmonic metamaterial based negative refraction lenses perform as either converging lenses or diverging lenses depending on the illumination directions. New imagin...

Journal: :Optics letters 2011
Liang Song Konstantin Maslov Lihong V Wang

Although ultrasound arrays have been exploited in photoacoustic imaging to improve imaging speed, ultrasound-array-based optical-resolution photoacoustic microscopy (OR-PAM) has never been achieved previously to our knowledge. Here we present our development of multifocal OR-PAM using a microlens array for optical illumination and an ultrasound array for photoacoustic detection. Our system is c...

2011
Xiaoqi Li Lei Xi Ruixin Jiang Lei Yao Huabei Jiang

We designed, fabricated and tested a novel imaging system that fuses diffuse optical tomography (DOT) and photoacoustic tomography (PAT) in a single platform. This platform takes advantages of both DOT and PAT, and can potentially provide dual-modality two dimensional functional and cellular images of the breast quantitatively. Here we describe this integrated platform along with initial tissue...

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