Design of a high-numerical-aperture digital micromirror device camera with high dynamic range

作者：Qiao Yang; Xu Xiping^*; Liu Tao; Pan Yue

来源：Applied Optics, 2015, 54(1): 60-70.

DOI：10.1364/AO.54.000060

A high-NA imaging system with high dynamic range is presented based on a digital micromirror device (DMD). The DMD camera consists of an objective imaging system and a relay imaging system, connected by a DMD chip. With the introduction of a total internal reflection prism system, the objective imaging system is designed with a working F/# of 1.97, breaking through the F/2.45 limitation of conventional DMD projection lenses. As for the relay imaging system, an off-axis design that could correct off-axis aberrations of the tilt relay imaging system is developed. This structure has the advantage of increasing the NA of the imaging system while maintaining a compact size. Investigation revealed that the dynamic range of a DMD camera could be greatly increased, by 2.41 times. We built one prototype DMD camera with a working F/# of 1.23, and the field experiments proved the validity and reliability our work.

• 出版日期2015-1-1
• 单位长春理工大学