CAJ | 학술논문

传统的数字光处理(DLP)技术无法收集利用数字微镜(DMD)芯片上微镜处于“OFF”态时反射的光线，针对这种缺陷，提出一种基于新型导光管的微型DLP投影光学系统的设计方案，该系统包括LED、导光管、色轮、准直系统和投影透镜。提出在锥形导光管的基础上加上一根弯型的导光管和复合抛物面聚光器(CPC)用来收集被DMD反射的多余的光线。先用非成像光学的理论分析和计算出各部分的相关参数，再用ZEMAX软件对准直系统和投影透镜进行结构优化，最后用TracePro软件建立模型并仿真，仿真结果表明：随着“OFF”态微镜数量的增加，收集光管提高系统光能利用率的能力先增加后减小。相比没有收集光管的情况，当DMD芯片上处于“OFF”态微镜数量为50%时，导光管提高的光能利用率最多，为5.91%。
전통적수자광처리(DLP)기술무법수집이용수자미경(DMD)심편상미경처우“OFF”태시반사적광선，침대저충결함，제출일충기우신형도광관적미형DLP투영광학계통적설계방안，해계통포괄LED、도광관、색륜、준직계통화투영투경。제출재추형도광관적기출상가상일근만형적도광관화복합포물면취광기(CPC)용래수집피DMD반사적다여적광선。선용비성상광학적이론분석화계산출각부분적상관삼수，재용ZEMAX연건대준직계통화투영투경진행결구우화，최후용TracePro연건건립모형병방진，방진결과표명：수착“OFF”태미경수량적증가，수집광관제고계통광능이용솔적능력선증가후감소。상비몰유수집광관적정황，당DMD심편상처우“OFF”태미경수량위50%시，도광관제고적광능이용솔최다，위5.91%。
Traditional DLP technologies can not collect and utilize the light which is reflected by the micromirrors of DMD in the "OFF" state. Aiming at this defect, one design scheme of the micro DLP projection system based on a novel light pipe was presented. This system included LEDs, light pipe, color wheel, the collimation system and projection lens. A bending light pipe was added on the base of the tapered light pipe, and a compound parabolic concentrator (CPC) was used in the input end to collect the extra light reflected by the DMD. First, the related parameters of each part were analyzed and calculated according to the nonimaging optics theory. Second, the collimation system and projection lens were optimized by ZEMAX software. Finally, the model was built and simulated in TracePro software. The simulation results show that: with the number of micromirrors in the "OFF" state growing, the improving light efficiency ability of collecting light pipe first increases then decreases. Comparing with having no collecting light pipe, the light efficiency is increased by 5.33%; light pipe improves the most light efficiency, 5.91%, when half of the micromirrors are in the "OFF" state.