CAJ | 학술논문

利用几何光学和眼科屈光学基本原理,针对综合验光仪加工和装配中的两项主要误差:镜片偏心和倾斜给验光带来的影响进行了分析,并用ZEMAX软件进行验证.结果表明综合验光仪中的镜片若存在偏心,则会在验光中引入棱镜度误差,该误差与镜片的屈光度数和偏心量有关;若镜片存在倾斜,则不但会引起轴向主光线在像方焦面上像点位置的偏移,即棱镜度误差,还会给验光引入球镜度和柱镜度误差,其中柱镜度误差是球镜度误差的2n倍,并且镜片两表面发生反向倾斜给验光带来的影响要比装配时镜片整体倾斜的影响显著.此外,镜片装配时由于偏心给验光带来的影响要比倾斜大,所以在综合验光仪的加工或装配过程中应严格控制镜片偏心和两表面反向倾斜.
이용궤하광학화안과굴광학기본원리,침대종합험광의가공화장배중적량항주요오차:경편편심화경사급험광대래적영향진행료분석,병용ZEMAX연건진행험증.결과표명종합험광의중적경편약존재편심,칙회재험광중인입릉경도오차,해오차여경편적굴광도수화편심량유관;약경편존재경사,칙불단회인기축향주광선재상방초면상상점위치적편이,즉릉경도오차,환회급험광인입구경도화주경도오차,기중주경도오차시구경도오차적2n배,병차경편량표면발생반향경사급험광대래적영향요비장배시경편정체경사적영향현저.차외,경편장배시유우편심급험광대래적영향요비경사대,소이재종합험광의적가공혹장배과정중응엄격공제경편편심화량표면반향경사.
With the basic principle of geometric optics and ophthalmic dioptrics, the effect on decentration and tilt of lenses in phoropters is analyzed theoretically and verified by ZEMAX software. Results show that decentration in lenses will introduce extra prismatic power, and tilt will introduce error not only in prismatic power but also in spherical and cylindrical power. Moreover, if front and back surface of one single lens are tilted from two opposite directions, the error will be much bigger than that tilted from the same direction. Besides, the effect of decentration is a little more significant than that of tilt in assembly. Therefore, decentration and tilt from two opposite directions for front and back surface of a lens should be avoided possibly in production and assembly of phoropters.