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研究了一种瞄准镜用飞行模拟器投射镜头的设计,并给出了模拟器投射镜头的设计实例。模拟器由显示系统、屏幕、投射系统、反射镜组成,模拟图像信号送入模拟器的显示系统,显示系统将视景仿真模拟图像信号投射到屏幕上,屏幕位于投射系统的焦平面上,瞄准镜对由模拟器进入的光线成像实现成像模拟。投射系统由周边系统、中心系统共9路光学镜头组成,投射系统周边系统、中心系统对应于瞄准镜的中心系统与周边系统,中心系统与周边系统的物面位置重合即共物面;中心系统采用摄远物镜镜形式缩短了镜头长度结构更加紧凑。周边系统焦距为f=263.02mm,视场角为2ω=17°,全视场畸边<0.4%,在屏幕的Nyquist频率处全视场的MTF>0.9,系统长度330mm;中心系统焦距为f=295.00mm,视场角为2ω=17°,全视场畸变<0.37%,在屏幕的Nyquist频率处全视场的MTF>0.9,系统长度283.2mm。投射系统采用全口径出光,同时系统通光口径略大于敏感器的通光口径,降低了系统装配的精度。
This paper studies the design of a kind of aiming lens flight simulator projection lens and gives the design example of the simulator projection lens. The simulator is composed of a display system, a screen, a projection system and a reflection mirror. The analog image signal is sent to a display system of the simulator. The display system projects the visual simulation simulation image signal onto the screen. The screen is located on the focal plane of the projection system, aiming The mirror simulates the light entering the simulator. Projection system consists of peripheral system, a total of 9 central optical system lens system, projection system peripheral system, the center system corresponds to the center of the scope system and the peripheral system, the center system and the peripheral system of the object surface coincide that is the total surface; The use of telephoto objective lens shortens the length of the lens structure is more compact. The focal length of the peripheral system is f = 263.02mm, the field of view is 2ω = 17 °, the total visual field distortion <0.4%, the MTF of full field at the Nyquist frequency of the screen is> 0.9 and the system length is 330mm. The focal length of the center system is f = 295.00mm, field of view 2ω = 17 °, total field distortion <0.37% at the Nyquist frequency of the screen Full field MTF> 0.9, system length 283.2mm. Projection system uses full-aperture light, while the system is slightly larger than the light-pass diameter of the sensor aperture, reducing the accuracy of the system assembly.