Nikon 135mm f/1.8 lens patent

nikon 100-300 F4

•Patent filing date: October 27th, 2010
•Focal length: 102 - 294mm
•Aperture: 4.1
•Angle of view: 8.2 - 24.1 deg
•Lens length: 282.43mm
•Image height: 21.6mm
•Lens design: 22 elements in 16 groups, 4 ED elements
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NIKON PC-E 17mm F4

•Patent released date: April 19th, 2012
•Patent filing date: October 1st, 2010
•Focal length: 17.11mm
•Aperture: 4.08
•Angle of view (half): 63.03deg
•Image height: 33.00mm
•Lens length: 188.30mm
•Back focus 53.036mm
•Lens design: 18 elements in 11 groups, 2 aspherical elements, 3 ED glass elements
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The patent for the upcoming Nikon AF-S 28mm f/1.8G full frame lens is now online
Nikkor AF-S 28mm f/1.8G

20120069440
•f = 28.08 (focal length)
•FNO = 1.84 (aperture)
•2ω = 76.4° (filed of view)
•Y = 21.6 (image height)
•TL = 124.5 (total lens length)
Nikkor AF-S 16-35mm f/2.8G

20120069441
•f = 16.48 - 24.00 - 33.95 (focal length)
•FNO = 2.884 - 2.884 - 2.884 (aperture)
•2ω = 108° - 84° - 63° (filed of view)
•Y = 21.64 - 21.64 - 21.64 (image height)
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在最近N板幾乎大半都是和D4與D800有關討論,在還未上市測試之前,先來看看最今NIKON專利部份。
專利與應用比對
VR廣角鏡35mm F2.8 VR
Corresponding patent lenses for full-size 35mm F2.8 Nikon camera shake correction [lens optical technology and design]

Length 67.39mm
6片5群(2片3面非球面)
平價廣角變焦鏡16-30mm f/4.5-5.6
a 16-30mm f/4.5-5.6

Length 138.24mm
14片9群(3ED 2片3面非球面)
大光圈超廣角鏡20mm F1.8 or 18mm F1.8
Nikon 18mm F1.8, 20mm F1.8 patent [lens optical technology and design]
18/1.8

14片11群(3ED 3片3面非球面)
20/1.8

12片9群(4ED 3片3面非球面)
這些專利顯示一些跡象!
1.開始針對廣角定焦配上VR,這個很顯然是針對錄影市場,對於一般用戶廣角VR需求不高,但錄影時候,影像穩定就是一個重要區塊,特別是輕量廣角鏡頭,本身對於一般人錄影使用機會就比較大,不過,CANON都已經發表24/2.8 iS和28/2.8 IS,nikon顯得有點慢。
2.AF 18-35是NIKON平價型廣角變焦鏡,雖然少了VR加身,但相信對風景或其他攝影用戶,鏡頭選擇越多,越容易作預算規劃考量。
3.18/1.8或20/1.8,leica 在先前推出21/1.4 24/1.4,其中21/1.4算是顯現LEICA光學技速術又更前進一步,這一個NIKON專利是相近設計而具有兩種演變型態,只是在過去,18和20是高階與平價兩級的鏡頭,18/2.8是遠比20/2.8貴上許多。超廣角大光圈的難度,在DSLR上設計上限制又相對高許多,只不過,看其性能曲線似乎相當不錯,這顆會不會除了望遠鏡頭之外,最貴N字鏡。
或著是由之前Nikon AF-S NIKKOR 50mm F1.2G榮升?

