红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
10期
3342-3346
,共5页
于双双%史宣%杜吉%孟军合
于雙雙%史宣%杜吉%孟軍閤
우쌍쌍%사선%두길%맹군합
增大出瞳直径%手术显微镜%微透镜阵列%微光学
增大齣瞳直徑%手術顯微鏡%微透鏡陣列%微光學
증대출동직경%수술현미경%미투경진렬%미광학
exit pupil expander%surgical microscope%microlens array%micro-optics
医生使用传统含目镜系统的手术显微镜进行手术,当其头部移动时,该系统仅存在很小的出瞳直径,因而这就迫使医生在手术过程中长时间保持头部在特定位置。可见,传统手术显微镜存在显著弊端:长时间持续观察会增加医生的疲劳度。对使用二维微透镜阵列(microlens array,MLA)增大目视光学系统出瞳直径进行了理论探讨,并用傅里叶光学原理进行了理论分析。并且在此基础上,设计了增大手术显微镜光学系统出瞳直径的二维微透镜阵列器件,该二维微透镜阵列器件中两个折射面相对放置,且两者相距一个微透镜单元焦距的长度。经计算机模拟计算证明,使用该二维微透镜阵列器件可以有效增大目视光学系统出瞳直径,并可获得更加均匀的出射光束。
醫生使用傳統含目鏡繫統的手術顯微鏡進行手術,噹其頭部移動時,該繫統僅存在很小的齣瞳直徑,因而這就迫使醫生在手術過程中長時間保持頭部在特定位置。可見,傳統手術顯微鏡存在顯著弊耑:長時間持續觀察會增加醫生的疲勞度。對使用二維微透鏡陣列(microlens array,MLA)增大目視光學繫統齣瞳直徑進行瞭理論探討,併用傅裏葉光學原理進行瞭理論分析。併且在此基礎上,設計瞭增大手術顯微鏡光學繫統齣瞳直徑的二維微透鏡陣列器件,該二維微透鏡陣列器件中兩箇摺射麵相對放置,且兩者相距一箇微透鏡單元焦距的長度。經計算機模擬計算證明,使用該二維微透鏡陣列器件可以有效增大目視光學繫統齣瞳直徑,併可穫得更加均勻的齣射光束。
의생사용전통함목경계통적수술현미경진행수술,당기두부이동시,해계통부존재흔소적출동직경,인이저취박사의생재수술과정중장시간보지두부재특정위치。가견,전통수술현미경존재현저폐단:장시간지속관찰회증가의생적피로도。대사용이유미투경진렬(microlens array,MLA)증대목시광학계통출동직경진행료이론탐토,병용부리협광학원리진행료이론분석。병차재차기출상,설계료증대수술현미경광학계통출동직경적이유미투경진렬기건,해이유미투경진렬기건중량개절사면상대방치,차량자상거일개미투경단원초거적장도。경계산궤모의계산증명,사용해이유미투경진렬기건가이유효증대목시광학계통출동직경,병가획득경가균균적출사광속。
The conventional surgical microscope uses eyepiece lens systems which have very small exit pupil to occur when the observer moves his head during observation, thereby obliging the observer to keep his head at a constant position while he performs the operations described above. Therefore, the conventional surgical microscope has a defect that it gives a strong feeling of fatigue when he continues observation for a long time. Two dimensional microlens array(MLA) can be used in wearable applications as exit pupil expanders to increase the size of the optical system exit pupil. Fourier optics theory was used to derive the analytical formulas, and physical optics beam propagation was used for numerical computations. The MLA′s reflective surface was spaced from the other focal curve about a focal length. A dual-MLA is proved that can produces excellent exit-pupil, and it can often generate output beamlets that have a more uniform brightness.