scholarly journals Thermal modelling of the human eye exposed to infrared radiation of 1064 nm Nd:YAG and 2090 nm Ho:YAG lasers

Author(s):  
M. Cvetković ◽  
A. Peratta ◽  
D. Poljak
1979 ◽  
Vol 9 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Valentin G Dmitriev ◽  
V N Emel'yanov ◽  
M A Kashintsev ◽  
V V Kulikov ◽  
A A Solov'ev ◽  
...  

2018 ◽  
Vol 55 (3) ◽  
pp. 438-441
Author(s):  
Kinga Jez ◽  
Marcin Nabialek ◽  
Konrad Gruszka ◽  
Michal Deka ◽  
Slawomir Letkiewicz ◽  
...  

The research concerns the transmission of electromagnetic waves with a wavelength corresponding to the visible part of the spectrum and part of the ultraviolet and infrared radiation range. Light transmittance through ocular lenses was tested using a UV-Vis spectrophotometer for the wavelength range 250-850 nm. Obtained results encourage reflection on the quality of the spectacle lenses produced. The obtained results do not confirm the assurances of producers about the increase in light transmittance in the range of wavelengths corresponding to the highest sensitivity of the human eye. In addition, lenses having UV protection coatings do not perform their function in a proper way. Eyeglass lenses of various classes were tested, equipped with various refining coatings. The effect of the number of coatings on the transmission of light through the lenses was not observed. Conducting and publishing studies such as those presented in this work may have a significant impact on the improvement of the quality of manufactured eyeglass lenses.


Author(s):  
H.P. Rohr

Today, in image analysis the broadest possible rationalization and economization have become desirable. Basically, there are two approaches for image analysis: The image analysis through the so-called scanning methods which are usually performed without the human eye and the systems of optical semiautomatic analysis completely relying on the human eye.The new MOP AM 01 opto-manual system (fig.) represents one of the very promising approaches in this field. The instrument consists of an electronic counting and storing unit, which incorporates a microprocessor and a keyboard for choice of measuring parameters, well designed for easy use.Using the MOP AM 01 there are three possibilities of image analysis:the manual point counting,the opto-manual point counting andthe measurement of absolute areas and/or length (size distribution analysis included).To determine a point density for the calculation of the corresponding volume density the intercepts lying within the structure are scanned with the light pen.


1913 ◽  
Vol 76 (1960supp) ◽  
pp. 51-51
Author(s):  
A. Gleichen

2019 ◽  
Vol 8 (2) ◽  
pp. 71-77
Author(s):  
Ku Yeon Lee ◽  
◽  
Hyung H. Lee ◽  
Suk Chan Hahm

Author(s):  
W.P. De Lange

The Greenhouse Effect acts to slow the escape of infrared radiation to space, and hence warms the atmosphere. The oceans derive almost all of their thermal energy from the sun, and none from infrared radiation in the atmosphere. The thermal energy stored by the oceans is transported globally and released after a range of different time periods. The release of thermal energy from the oceans modifies the behaviour of atmospheric circulation, and hence varies climate. Based on ocean behaviour, New Zealand can expect weather patterns similar to those from 1890-1922 and another Little Ice Age may develop this century.


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