YANG Guang-li, FENG Fei, XIONG Bin, et al. Effect of mechanical characteristic of an micro-mechanical optically readable infrared imaging array device on its performance[J]. Optics and precision engineering, 2007, 15(5): 699-705.
YANG Guang-li, FENG Fei, XIONG Bin, et al. Effect of mechanical characteristic of an micro-mechanical optically readable infrared imaging array device on its performance[J]. Optics and precision engineering, 2007, 15(5): 699-705.DOI:
For an optically readable infrared imaging array device with a bi-material beam micro-mirror integrated structure
the effect of mechanical characteristic of the pixel on its performance was studied. Thermal-mechanical sensitivity was analyzed by theoretic calculation and ANSYS simulation to optimize the geometric parameter and the thermal-mechanical sensitivity of 2.14×10
-3
rad/K was obtained. Based on the study of frequency and damping
the effects of mechanical characteristic on thermal vibration noise and mechanical stability were analyzed. The results show that the mechanical impulse inducing fracture is 8 945 g
and when the working pressure is determined to be 50~200 Pa
the thermal vibration noise and noise induced by ambient mechanical vibration can be neglected. The results satisfy the requirement for infrared imaging device in high sensitivity and low noise.