scholarly journals Evaluation of Geometrical Modulation Transfer Function in Optical Lens System

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Cheng-Mu Tsai

This paper presents ray tracing algorithms to evaluate the geometrical modulation transfer function (GMTF) of optical lens system. There are two kinds of ray tracings methods that can be applied to help simulate the point spread function (PSF) in the image plane, for example, paraxial optics and real ray tracings. The paraxial optics ray tracing is used to calculate the first-order properties such as the effective focal length (EFL) and the entrance pupil position through less cost of computation. However, the PSF could have a large tolerance by only using paraxial optics ray tracing for simulation. Some formulas for real ray tracing are applied in the sagittal and tangential line spread function (LSF). The algorithms are developed to demonstrate the simulation of LSF. Finally, the GMTF is evaluated after the fast Fourier transform (FFT) of the LSF.

2014 ◽  
Vol 65 ◽  
pp. 54-60 ◽  
Author(s):  
Dalibor Petković ◽  
Shahaboddin Shamshirband ◽  
Nor Badrul Anuar ◽  
Mohd Hairul Nizam Md Nasir ◽  
Nenad T. Pavlović ◽  
...  

2014 ◽  
Vol 117 (1) ◽  
pp. 126-136 ◽  
Author(s):  
Dalibor Petkovi@ ◽  
Shahaboddin Shamshirband ◽  
Nenad T. Pavlovi@ ◽  
Nor Badrul Anuar ◽  
Miss Laiha Mat Kiah

2009 ◽  
Vol 33 (3) ◽  
pp. 429-442 ◽  
Author(s):  
Kuo-Hwa Tseng ◽  
Chieh Kung ◽  
Te-Tan Liao ◽  
Hao-Peng Chang

The resolution and performance of an optical system can be characterized by a quantity known as the modulation transfer function (MTF), which is a measurement of an optical system’s ability to transfer contrast from the specimen to the intermediate image plane at a specific resolution. Accordingly, this study employs skew ray tracing based on a 4 × 4 homogeneous coordinate transformation matrix and Snell’s law to develop a detailed methodology for determining the spot diagram on the image plane when light rays pass through the optical system. And the authors present calculations of the MTF of an optical system by using the spot diagram on the image plane. The numerical results of the proposed methodology are demonstrated using a symmetrical optical system.


2017 ◽  
Vol 87 ◽  
pp. 153
Author(s):  
Dalibor Petković ◽  
Shahaboddin Shamshirband ◽  
Nor Badrul Anuar ◽  
Mohd Hairul Nizam Md Nasir ◽  
Nenad T. Pavlović ◽  
...  

2014 ◽  
Vol 117 (1) ◽  
pp. 121-131 ◽  
Author(s):  
Dalibor Petković ◽  
Shahaboddin Shamshirband ◽  
Nenad T. Pavlović ◽  
Nor Badrul Anuar ◽  
Miss Laiha Mat Kiah

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