Results 141 to 150 of about 15,380 (175)

A clinical evaluation of the Topcon RM6000 autorefractor

Clinical and Experimental Optometry, 1989
The Topcon RM6000 autorefractor was evaluated by assessing the repeatability of its results and the extent of their agreement with the findings of conventional subjective refraction.
David B. Elliott, Robert D. Wilkes
openaire   +1 more source

Range ratio of topcon radiation thermometers

SICE Annual Conference 2007, 2007
Topcon 0.65 mum and 0.9 mum radiation thermometers are used as the standard thermometers at high temperatures. These radiation thermometers employ three to five ranges to cover their whole temperature ranges. The range ratios of these thermometers influence largely on the calibration uncertainty.
null Fumihiro Sakuma, null Laina Ma
openaire   +1 more source

The Topcon DL-101C Digital Level

Australian Surveyor, 2000
Even though the Topcon digital levels have been on the market since 1994, very little has been reported on the working principle of these instruments and on the results achieved with them. This paper discusses the operating principle of the Topcon digital level DL-101C and explains how the staff reading and the sighting distance are derived from the ...
openaire   +1 more source

Comparison of Topcon Optical Coherence Tomography and Ultrasound Pachymetry

Optometry and Vision Science, 2012
ABSTRACT Purpose To establish within‐rater repeatability and minimum measurements required for reliable assessment of central corneal thickness (CCT) using Topcon three‐dimensional OCT‐2000 (Topcon Medical Systems, Oakland, NJ) Fourier‐domain optical coherence tomography (FD‐OCT) and to test ...
Luke Cameron, Northey, Paul, Gifford, Gavin C, Boneham   +2 more
openaire   +2 more sources

Endothelbildanalyse mit dem Topcon „Ophthalmic Viewer”

Klinische Monatsblätter für Augenheilkunde, 1987
This paper describes the Topcon "Ophthalmic Viewer" and especially its application for evaluating photographs of the corneal endothelium.
U. Schiefer, E. Schütte
openaire   +1 more source

Poly-Si (n) Removal for TOPCon Solar Cells

2023
This work gives results on wet chemical parasitical polysilicon removal for tunnel oxide passivated contact (TOPCon) n-type silicon solar cells. The poly-Si removal is important to fabricate TOPCon cells with low reverse bias junction leakage current density (jrev,2).
Krieg, Katrin, Mack, Sebastian, Zimmer, Martin, Vollmer, Jan, Dannenberg, Tobias, Brunner, Damian   +5 more
openaire   +1 more source

Accuracy of Topcon CM-1000 Videokeratoscope on Spherical Test Surfaces

Journal of Refractive Surgery, 1997
ABSTRACT BACKGROUND: Many videokeratoscopes use mathematical formulas to calculate corneal radii; calculations depend on slope, curvature, coordinate position, or focal properties of the surface. Accuracy of each type of videokeratoscope must be evaluated.
E, Pérez-Yern, A, Fimia-Gil, F, Mateos, L, Carretero   +3 more
openaire   +2 more sources

[Endothelial image analysis with the Topcon ophthalmic viewer].

Klinische Monatsblatter fur Augenheilkunde, 1987
This paper describes the Topcon "Ophthalmic Viewer" and especially its application for evaluating photographs of the corneal endothelium.
U, Schiefer, E, Schütte
openaire   +1 more source

Degradation Mechanism of TOPCon Solar Cells in an Ambient Acid Environment

ACS Applied Materials & Interfaces
n-Type tunnel oxide passivated contact (TOPCon) solar cells are expected to dominate the global photovoltaic market in the next decade, primarily owing to their rapidly increasing power conversion efficiency (PCE). However, acids generated from encapsulant hydrolysis under damp-heat (DH) conditions significantly impair the reliability of TOPCon solar ...
Yufei ChenLi, Zehua Sun, Dengzhou Yan, Wenjun Gu, Zhiqiang Yang, Yuhan Wang, Fangdan Jiang, Yongcan Chen, Wenzhu Liu, Zhengyue Xia, Guoqiang Xing, Jian Yu   +11 more
openaire   +2 more sources

Unveiling the Photovoltaic Performance and Thermal Stability of n‐TOPCon, p‐TOPCon, and TOPCoRE Solar Cells Based on 110 μm Wafers

Energy Technology
The choice of the best possible TOPCon solar cell architecture in terms of photovoltaic performance, thermal stability, and bifaciality has been one of the most fundamental issues to be addressed. Accordingly, a theoretical approach with the help of Automat FOR Simulation of HETero‐structure simulation software has been adopted to conduct a detailed ...
Dibyendu Kumar Ghosh, Gourab Das, Sukanta Bose, Sumita Mukhopadhyay, Anindita Sengupta   +4 more
openaire   +1 more source