http://astr.loxa.edu.tw/class_doc/magnitute_telescope.htm
球面鏡與非球面鏡
http://www.digital.idv.tw/DIGITAL/Classroom/MROH-CLASS/oh14/index-oh14.htm
航太級大口徑非球面鏡技術突破
http://www.itrc.org.tw/Bulletin/News/aspheric.php
http://www.itri.org.tw/chi/tech-transfer/04.asp?RootNodeId=040&NodeId=041&id=2368
望遠鏡基礎知識——像差的種類
http://www.skylook.org/info/info-tw/info_1847.html
像差 (e.g. 球面鏡與球面像差)
http://zh.wikipedia.org/wiki/像差
http://zh.wikipedia.org/wiki/球面像差
色散/色差
http://www.shumasheying.com/html/jiaocheng/jiaocheng_300.html
8800ultra wrote:
扯到定焦大光圈~~小弟怎麼依稀記得NIKON有出一支300/1.4~@@
您說的應該是Nikon 300/2 ED-IF這顆，光圈比現行的300/2.8還要大上足足一級，發表至今20幾年了無人能出其右。
攝影新手的家 http://easyshot.mytw.net
Zemax, OSLO, CODE V, OpTailiX, LensView are all very good softwares. All of them have demo version that are free to use for a while. LensView is totally free.
The problems of optical design is not always optical. A lot of times, they are manufacturing and mechanical.
For example, large lenses elements can be very heavy. How to drive those glass? You need a large motor to do that. The rigidity of the housing becomes important too. In fact, everything becomes important and hard.
EOS 40D+BG-EN3/350D/17-40 f4L/70-200 f4L IS/50 f1.8/18-55 f5.6/MacBook&ThinkPad
roger_wang wrote:
or example, large lenses elements can be very heavy. How to drive those glass? You need a large motor to do that. The rigidity of the housing becomes important too. In fact, everything becomes important and hard....(恕刪)
In the case of large lens manufactuering, the most critical challenges are annealing and figuring. Null lens test is the key of success.
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