新圓柱面透鏡概述課件

柱面透鏡的識(shí)別與中和1、視覺像移如何操作？順動(dòng)表明什么，逆動(dòng)表明什么？軸向如何定？新圓柱面透鏡概述2、旋轉(zhuǎn)實(shí)驗(yàn)柱面鏡片的鑒別：旋轉(zhuǎn)實(shí)驗(yàn)不產(chǎn)生剪刀運(yùn)動(dòng)的鏡片無柱鏡成分，產(chǎn)生剪刀運(yùn)動(dòng)的有柱鏡成分在旋轉(zhuǎn)試驗(yàn)里如何判斷逆剪刀運(yùn)動(dòng)還是順剪刀運(yùn)動(dòng)？要注意什么問題？新圓柱面透鏡概述操作2旋轉(zhuǎn)試驗(yàn)剪刀運(yùn)動(dòng)正柱鏡，逆剪刀負(fù)柱鏡順剪刀新圓柱面透鏡概述要注意：軸向要與垂直線平行。旋轉(zhuǎn)實(shí)驗(yàn)：剪刀運(yùn)動(dòng)，正鏡——逆剪刀運(yùn)動(dòng)負(fù)鏡——順剪刀運(yùn)動(dòng)思考：如軸向與水平線平行可以嗎？新圓柱面透鏡概述旋轉(zhuǎn)試驗(yàn)的運(yùn)用鑒定球面還是柱面確定柱鏡的主子午線新圓柱面透鏡概述ActionofapluscylinderThisisacrosslinechart.OnthenextmouseclickyouwillplaceapluscylinderheldwithitsaxisVERTICALinfrontofthechart…Noticethatthelimbsappeartobeintheiroriginalpositionsbutthatjusttheverticallimbismagnifiedinthehorizontalmeridian.Onclockwiserotationofthecylinder,theverticallimbrotatesanticlockwiseandthehorizontallimbrotatesclockwisetowardsitinaSCISSORSMOVEMENT.Furtherclockwiserotationofthecylinder,producesfurtherSCISSORSMOVEMENT.Rotatingthecylinderbackagaincausesthelimbsto,SCISSORbacktotheiroriginalposition.YoucanemulatetheactualmovementseenduringtherotationtestbyRIGHTclickingfourtimesbackthroughthissequence.Thecylinderaxiscanbemarkedonthelenswhenithasbeenrotatedtothispositionwhereacontinuousappearanceofthecrosslinesisobtained.新圓柱面透鏡概述OnthenextmouseclickyouwillplaceaminuscylinderheldwithitsaxisVERTICALinfrontofthechart…Noticethatthelimbsappeartobeintheiroriginalpositionsbutthatjusttheverticallimbappearsminifiedinthehorizontalmeridian.ActionofaminuscylinderOnclockwiserotationofthecylinder,theverticallimbalsorotatesclockwiseandthehorizontallimbrotatesanticlockwisetowardsitinaSCISSORSMOVEMENT.Furtherclockwiserotationofthecylinder,producesfurtherSCISSORSMOVEMENT.Rotatingthecylinderbackagaincausesthelimbsto,SCISSORbacktotheiroriginalposition.YoucanemulatetheactualmovementseenduringtherotationtestbyRIGHTclickingfourtimesbackthroughthissequence.Thecylinderaxiscanbemarkedonthelenswhenithasbeenrotatedtothispositionwhereacontinuousappearanceofthecrosslinesisobtained.OphthalmicLenses&Dispensing新圓柱面透鏡概述圓柱面透鏡的鑒別與測(cè)量圓柱面鏡片的鑒別：旋轉(zhuǎn)實(shí)驗(yàn)不產(chǎn)生剪刀運(yùn)動(dòng)的鏡片無柱鏡成分，產(chǎn)生剪刀運(yùn)動(dòng)的有柱鏡成分。

新圓柱面透鏡概述中和法測(cè)量柱鏡度數(shù)步驟視覺像移及旋轉(zhuǎn)實(shí)驗(yàn)判斷性質(zhì)和軸向取性質(zhì)相反負(fù)鏡片與待測(cè)鏡片疊合，注意兩鏡片軸向一致，光心相重新圓柱面透鏡概述持疊合鏡片再次做旋轉(zhuǎn)實(shí)驗(yàn)，根據(jù)結(jié)果調(diào)換鏡片，直至沒有剪刀運(yùn)動(dòng)根據(jù)已知鏡片記錄未知鏡片新圓柱面透鏡概述柱面透鏡的聯(lián)合聯(lián)合符號(hào)有兩種：“”和“/”聯(lián)合形式有三種：同軸，正交、斜交用光學(xué)十字圖表示柱鏡組合更簡(jiǎn)單。新圓柱面透鏡概述光學(xué)十字如何表示+2.00X180-2.00X90+2.000-2.000新圓柱面透鏡概述軸向相同的兩圓柱面透鏡，疊合后其軸向不變，其鏡度為兩圓柱面透鏡鏡度之和例：+1.00DC×180+2.00DC×180=+3.00DC×180+2.00DC+1.00DC0+0=+3.00DC0新圓柱面透鏡概述兩軸向相同，鏡度相反的圓柱面透鏡疊合后不再有鏡度，其光學(xué)效果等效于平行玻璃板+3.00DC×180-3.00DC×180=0+3.00DC0+-3.00DC0=0.00DC0新圓柱面透鏡概述如果軸向相互垂直，結(jié)果怎樣？新圓柱面透鏡概述光學(xué)十字+3.00X180-3.00X90+3.000-3.000新圓柱面透鏡概述兩軸互相垂直，鏡度相同的圓柱面透鏡疊合，其效果等于一個(gè)球面透鏡，此球鏡的鏡度與兩柱面透鏡鏡度相同。+3.00DC×180+3.00DC×90=+3.00DS+3.00DC0+0+3.00DC=+3.00DC+3.00DC新圓柱面透鏡概述一個(gè)柱面鏡可由一相同鏡度的球面鏡和一個(gè)鏡度相同但符號(hào)相反且軸向垂直的柱鏡所疊加+3.00DC×90=+3.00DS-3.00DC×1800+3.00DC=+3.00DC+3.00DC-3.00DC0+新圓柱面透鏡概述光學(xué)十字(2)+2.00X180-6.00X90+2.000-6.000新圓柱面透鏡概述兩軸互相垂直，鏡度不同的圓柱面透鏡疊合，其效果相當(dāng)于一個(gè)球鏡加一個(gè)柱鏡+1.00DC×90+3.00DC×180=+1.00DS/+2.00DC×180=+3.00DS/-2.00DC×900+3.00DC0++1.00DC=+3.00DC+1.00DC+1.00DC+2.00DC+3.00DC-2.00DC新圓柱面透鏡概述例題練習(xí)：+1.00DC×90-3.00DC×180=+1.00DS/-4.00DC×180=-3.00DS/+4.00DC×900-3.00DC0++1.00DC=

-3.00DC+1.00DC+1.00DC-4.00DC-3.00DC+4.00DC新圓柱面透鏡概述例題練習(xí)：+4.00DC×90/

-1.00DC×180-1.00DC×180

/

-4.00DC×90-3.00DC×90/

+4.00DC×180新圓柱面透鏡概述兩柱鏡正交疊合而成的球鏡加柱鏡有兩種形式：一為球鏡加正柱鏡；另一為球鏡加負(fù)柱鏡，兩種形式的光學(xué)效果完全相同+1.00DC×90+3.00DC×180=+1.00DS/+2.00DC×180=+3.00DS/-2.00DC×90新圓柱面透鏡概述轉(zhuǎn)換規(guī)則：已知兩軸向互相垂直的圓柱面透鏡的鏡度分別為F1、F2，則疊合后1、以F1為球鏡鏡度，（F2-F1）為柱鏡鏡度，柱鏡軸向與鏡度為F2的柱鏡相同2、以F2為球鏡鏡度，（F1-F2）為柱鏡鏡度，柱鏡軸向與鏡度為F1的柱鏡相同新圓柱面透鏡概述+1.00DC×90+3.00DC×180=+1.00DS/+2.00DC×180=+3.00DS/-2.00DC×90新圓柱面透鏡概述新圓柱面透鏡概述2密接斜交柱鏡的聯(lián)合2柱鏡斜交，聯(lián)合后必有一個(gè)方向鏡度最小，該方向應(yīng)該在2柱鏡的軸之間，而與之垂直的方向鏡度最大。新圓柱面透鏡概述2柱鏡以任何角度相加，等效于一球面加一新柱面。設(shè)相加后球鏡度數(shù)為S，柱鏡度數(shù)為C計(jì)算公式。。。新圓柱面透鏡概述

正切公式法運(yùn)算步驟1、將2柱