论文信息 - Stray light analysis and suppression of panoramic annular lens.

Stray light analysis and suppression of panoramic annular lens.

A new stray light analysis method and some suppression principles of panoramic annular lens (PAL) are introduced in this paper. The proposed method is to find stray light paths which are caused by ray splitting on two refractive surfaces of the PAL block and then cut them off. Following this principle, the stray light paths can be eliminated in the design progress by adding specific merit functions into the optical software. The methods to reduce scatter, diffraction and other stray light are also proposed. A new PAL with a field of view (FOV) of 30° ~ 100° × 360° is designed. The stray light is suppressed more than 80% compared with a similar conventional PAL. The stray light path analysis method also can be used in other catadioptric optics.

[1] Jian Bai,et al. Design of a panoramic annular lens with a long focal length. , 2007, Applied optics.

[2] Ning Song,et al. Baffles design for an axial two-mirror telescope , 2002 .

[3] A. Buffington,et al. Wide-angle stray-light reduction for a spaceborne optical hemispherical imager. , 1996, Applied optics.

[4] V. N. Martynov,et al. New constructions of panoramic annular lenses: design principle and output characteristics analysis , 2008, Optical Systems Design.

[5] Cheryl Dawn Bankston. SEDS, earth, atmosphere, and space imaging system (SEASIS) , 1994, Defense, Security, and Sensing.

[6] Jian Bai,et al. Design of panoramic stereo imaging with single optical system. , 2012, Optics express.

[7] Partha P. Banerjee,et al. Panoramic annular lens attitude determination system (PALADS) , 1995, Defense, Security, and Sensing.

[8] B. R. Johnson. Analysis of diffraction reduction by use of a Lyot stop. , 1987 .