Advanced Smart High Ratio Zoom System with Global Optimization

2007 ◽  
Vol 364-366 ◽  
pp. 527-532
Author(s):  
Quan Xin Ding ◽  
Hua Liu
Keyword(s):  
Global Optimization ◽  
Optical System ◽  
High Ratio ◽  
Weight System ◽  
Optimized Design ◽  
Modulation Transfer ◽  
Volume Weight ◽  
Spread Function ◽  
Field View ◽  
Main Strategy

With an aim to achieve a breakthrough the choke point in research on system design, to achieve the transforming in multiple fields of view, the approaching to system efficacy limit in theory and improving smartness, pure diffractive optical system is chosen. The top idea and main strategy is developed. Some correlative model is established. In optimized design, global optimization algorithm is used to achieve wider spectrum range, multi field view, lower distortion and appropriate MTF. A kind of result works mainly in 3~5%m and 8~12%m with high ratio of more than 20:1 is evaluated. And this integrated multi-sensor electro-optical system satisfies the applied requirements o some criteria, such as Modulation Transfer Function (MTF), Spot Diagram (RMS) and Point Spread Function (PSF) etc., and achieves remarkable advantages in volume, weight, system efficiency and so on.

Global optimization of the modulation transfer function (MTF) of a multielement optical system

1996 ◽  
Author(s):  
S. Elumalai ◽  
U. V. SreeRam Kumar ◽  
I. Nandana ◽  
Kuldeep K. Saxena ◽  
G. K. M. Thutupalli
Keyword(s):  
Global Optimization ◽  
Transfer Function ◽  
Optical System ◽  
Modulation Transfer Function ◽  
Modulation Transfer

scholarly journals Design of a High-Performance Digital Slit-Lamp Microscope with Five-Switched Zoom

2020 ◽  
Vol 10 (8) ◽  
pp. 2757 ◽  
Author(s):  
Youping Huang ◽  
Xiaogang Chen ◽  
Hao Zhang ◽  
Shuyan Huang ◽  
Feng Lin
Keyword(s):  
Optical System ◽  
Modulation Transfer Function ◽  
High Performance ◽  
Tolerance Analysis ◽  
Slit Lamp ◽  
Modulation Transfer ◽  
Coaxial System ◽  
Progressive Optimization ◽  
Telescope System ◽  
Quality Imaging

In this study, we design and present a five-fold digital slit-lamp microscope (DSLM) with built-in photographic lens and CCD. The initial structures of the front objective, Galilean telescope system, and photographic lens are systematically investigated and discussed in the design. A progressive optimization process is employed in the non-coaxial system design after the coaxial system achieves high performance. The analysis of spot diagrams and the modulation transfer function (MTF) show that this DSLM optical system achieves quasi-diffraction-limited performance and enables high-quality imaging for ophthalmic examination. Furthermore, tolerance analysis of this optical system is also performed, which provides a theoretical basis for machining and assembly. This design provides an idea for the design of a digital-zoom microscope in biomedical imaging instruments.

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