Title :
The cover glass thermal and pressure deformation affect of optical performance in space image sensor
Author :
Hsu, M.Y. ; Lin, W.C. ; Chan, C.Y. ; Ho, C.F. ; Chang, S.T. ; Huang, T.M.
Author_Institution :
Instrum. Technol. Res. Center, Nat. Appl. Res. Labs., Hsinchu, Taiwan
Abstract :
The space image sensor cover glass was bounded in 1atm air pressure in manufacture process. The air pressure and thermal radiation would affect the sensor cover glass deformation in space orbit. Therefore, this study was discussing the air pressure and thermal deformation on different sensor cover glass thickness affect optical performance in telescope system. The air pressure and thermal deformation of cover glass was simulating by FEM (finite element analysis) software. The deformation sag was transform to optical wave front error, and calculates telescope system MTF (Modulation Transfer Function). The result shown the cover glass thickness wasn´t sensitive to sagittal direction MTF in different image high. Meanwhile, the cover glass thickness increase, the tangential direction MTF would decline with image high increase.
Keywords :
deformation; finite element analysis; glass; heat radiation; image sensors; optical transfer function; telescopes; FEM software; air pressure; deformation sag; finite element analysis software; manufacture process; optical performance; optical wavefront error; pressure 1 atm; pressure deformation; space image sensor cover glass; space orbit; tangential direction MTF; telescope system; telescope system MTF; telescope system modulation transfer function; thermal deformation; thermal radiation; Adaptive optics; Finite element methods; Glass; Image sensors; Optical imaging; Optical sensors; Thermal sensors; FEM; MTF; Space Image Sensor;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944097
