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…昏過去。
你們能認(rèn)真的把專利看完么，答案不都在那里了

The primary lens is a very wide-angle lens...it has a very large depth of field...throws a wide image circle...on a pellicle element (which takes the normal place of film or a sensor) ...This second lens can zoom in on the projected wide-angle image, giving an apparently longer focal length ...
他使用了一個(gè)具有較大成像圓的大廣角鏡頭，將“具有較大景深”的影像投影在一張薄膜上，然后再用一個(gè)變焦鏡頭去捕捉薄膜上的影像，來實(shí)現(xiàn)變焦并控制光圈。

這道理簡單到不能再簡單，因?yàn)榍懊娴膹V角鏡頭完成了3D->2D的投影轉(zhuǎn)換，接下來的變焦實(shí)質(zhì)是對(duì)一個(gè)2D平面的翻拍，所以不存在景深的問題。通過后面變焦鏡頭的“放大”，也可以獲得類似長焦的效果，但由于是對(duì)2D影像的放大，所以景深沒問題。

至于 @jonny lee 提到的棱鏡，專利里也說了：

There is also a system of prisms in the system that allows the lens to be aimed without altering the camera's orientation.
就是為了在不變換機(jī)位的情況下讓鏡頭可以指向別處，同景深沒什么關(guān)系

不 是我說的輕巧，原文就是這么表述的，“There's nothing too very special or revolutionary about that.”，“By itself, that has also been done before,”，“Again, that's not novel in itself.”

同看了這個(gè)紀(jì)律片，感覺很震撼，潛在的價(jià)值太大了。
翻墻搜到的一段回答：
The detailed explanation is available in the patent (US5727236), which is available at Google Patents, among other places.

A simplified explanation is that he developed a system that uses two lenses. The primary lens is a very wide-angle lens, and like all wide-angle lenses, it has a very large depth of field for any given aperture (and the aperture is kept fairly large in Frazier's design). That's what gives the deep-focus "magic"; a very wide-angle lens. There's nothing too very special or revolutionary about that.

This particular wide-angle lens, though, also throws a wide image circle. In other words, it makes a very big picture for its focal length. Again, nothing spectacular there; covering a large film frame with a short focal length lens is something optical designers have been doing for quite some time.

The image that the wide-angle lens throws isn't used directly by the camera, though. It's focused on a pellicle element (which takes the normal place of film or a sensor) and viewed through a separate lens behind the wide-angle lens. This second lens can zoom in on the projected wide-angle image, giving an apparently longer focal length and allowing the aperture to be varied as necessary for photography/filming exposure while maintaining essentially the "baked-in" depth of field of the primary wide-angle lens. By itself, that has also been done before, as explained in the "prior art" section of the patent.

There is also a system of prisms in the system that allows the lens to be aimed without altering the camera's orientation. That part of the system is not too very different from an adjustable periscope. Again, that's not novel in itself.

It's the entire system taken together — using a large image circle from a very wide angle lens at an optimal wide aperture for that lens, taking a picture of that lens's picture through a separate lens, and having a system for articulating and orienting the two-lens system — that was patentable and award-winning. (However, it seems he blew the patent protection, at least in some jurisdictions, by poor choice of promotional methods. See the Wikipedia article for more details and links.)

我也看了，央視9套的那個(gè)節(jié)目。感覺說了半個(gè)小時(shí)沒說清楚講什么，節(jié)目從頭到尾吉姆這個(gè)人怎么不容易啊，受了多大苦啊，多么偉大啊，反正通篇都在夸，每個(gè) 受采訪者都說這個(gè)鏡頭系統(tǒng)將改變?nèi)澜缡裁吹?，多么與眾不同，發(fā)明多么了不起，感覺就好像邪教組織宣傳自己的領(lǐng)袖人物，看了半天沒有一點(diǎn)干貨。求牛人解答 此問題。

看了紀(jì)錄片,通過紀(jì)錄片也可以看到他們對(duì)技術(shù)保密非常嚴(yán)格(研究,生產(chǎn),組裝,對(duì)接軟體都在不同的地方完成).還搞出一些橡膠鏡頭來讓聽眾更加一頭霧水...
但是我看到界面中有一張圖上出現(xiàn)了一個(gè)特殊的東西, 不知道跟他核心技術(shù)有不有關(guān)系, 有光學(xué)知識(shí)背景的研究研究..
如圖(憑印象用QQ截圖畫的), 注意綠色部分... 可能是一個(gè)特殊的棱鏡, 猜想是否通過這個(gè)東西最終改變了投射到感光板上的彌散圓...

這個(gè)節(jié)目我也看了，后來想了想覺得應(yīng)該是先用一個(gè)大景深的鏡頭把近距離和遠(yuǎn)距離的物體成像于像面，然后用景深小的鏡頭拍這個(gè)像面的特寫，這樣應(yīng)該可行吧？

看了下專利的描述，大體原理應(yīng)該是用一個(gè)較小光圈的廣角鏡頭獲取一個(gè)大景深的像，再在后端用另外一個(gè)鏡頭來放大這個(gè)像……棱鏡可能和改變視角之類的有關(guān)，專利描述那么長沒耐心看完了……

不是說什么反物理之類，只是這個(gè)實(shí)現(xiàn)方式和一般造鏡頭的方式比較不一樣。就像chen jason搜索的那個(gè)答案一樣，更接近潛望鏡一些?；蛘哒f，也有點(diǎn)像望遠(yuǎn)鏡。

我試了一下，即使用一個(gè)超廣角鏡頭，也不可能獲得一個(gè)大光圈的大景深照片。而且，從透鏡的遠(yuǎn)離來看，透鏡只有一個(gè)焦點(diǎn)，離開焦點(diǎn)以外的圖像必然會(huì)不清晰。 所以不存在什么3d轉(zhuǎn)2d就會(huì)清晰的事情。既然2d本身不清晰，再怎么去用變焦拍，也不會(huì)清晰。那么弗雷澤產(chǎn)生如此大景深的鏡頭都是怎么弄出來的？困惑

剛看了紀(jì)錄片，的確感到震撼。

應(yīng)用到安保監(jiān)控系統(tǒng)，景深范圍可以達(dá)到200米。。。。。。

我猜測是運(yùn)用光學(xué)折射公式趨向極限區(qū)域的特性運(yùn)用，直白說：如何讓有一定角差的兩根光線射入界面同一點(diǎn)，透過的兩根折射線的角差越小，也就實(shí)現(xiàn)了聚焦的物像點(diǎn)的間距縮小，再對(duì)物像放大成像，每個(gè)透鏡都要遵循以上規(guī)律