离轴双通道头盔显示器光学系统设计  

Optical Design of A Off-Axis Dual-Channel Helmet Mounted Display

作　　者：佟静波[1] 崔庆丰[1] 薛常喜[1] 潘春艳[1] 张栋[1] 张康伟[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《光学学报》2010年第9期2662-2667,共6页Acta Optica Sinica

摘　　要：论述了双通道头盔显示器光学系统的结构特点。根据对双通道头盔显示器应用要求的讨论,确定了它的技术指标。分析了离轴像差的特性,并在光学系统合适的位置处使用合理的自由曲面面型,有效地校正了离轴像差。设计的离轴双通道头盔显示器光学系统的技术指标为视场40°×30°,出瞳直径15mm,焦距26.4mm,眼点距25mm,波长540～560nm,后截距大于3mm,眼分辨率满足在0.88lp/mrad空间频率处的调制传递函数(MTF)值大于0.1。该系统的结构紧凑(系统尺寸70mm×122mm),重心位置适当,可以内嵌入头盔侧面使用。Structure characters of a dual-channel helmet mounted display （DCHMD） optical system was analyzed. Based on the discussion of the requirements of DCHMD in application,the system′s technical specifications were presented. The off-axis aberration was analyzed and corrected by proper freeform surface at the right place of the optical system. A DCHMD optical system was developed with technical specifications： 40°×30° field of view,15mm exit pupil diameter,26.4 mm effective focal length,25 mm eye relief distance,wavelength range 540-560nm,back focal length more than 3 mm and modulation transfer function （MTF） higher than 0.1 at the frequency of 0.88 lp/mrad. This system has a compact size （70 mm×122 mm） and a decent center of gravity,and could be embedded in the helmets.

关 键 词：光学设计 头盔显示器 自由曲面 离轴像差分析 

分 类 号：TH74[机械工程—光学工程]