This lens has elements whos refractive index is controlled electrically. Its not a conventional lens by any means. I have no idea as to the practicality of mass producing them, but, it is a very interesting idea, one that we all have hoped would come.
Although it gives a 300mm f/4 lens as a example, it is a new type of IS that might appear in any lone telephoto lens. Perhaps one of the new super teles.
http://www4.ipdl.inpit.go.jp/Tokujitu/tjsogodbenk.ipdl* NOTICES *
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1.This document has been translated by computer. So the translation may not reflect the original precisely.
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CLAIMS
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[Claim(s)]
[Claim 1]
It is an optical instrument which has an optical system,
A shake detection means which detects deflection,
An electro optics element which constitutes said a part of optical system and from which internal refractive index distribution changes with the electro optic effects according to voltage impressed, An optical instrument having a driving means which impresses voltage to said electro optics element so that an image shake by deflection detected by said shake detection means may be reduced.
[Claim 2]
The optical instrument according to claim 1, wherein refractive index distribution inside said electro optics element is unsymmetrical to an optic axis of said optical system.
[Claim 3]
The optical instrument according to claim 1 or 2, wherein said electro optics element shows the secondary more than electro optic effect.
[Claim 4]
An optical instrument of any one description of three from Claim 1, wherein this optical instrument has a vibration control means for reducing an image shake by deflection detected by said shake detection means apart from said electro optics element.
[Claim 5]
An optical instrument of any one description of four from Claim 1 having a photosensitive element which records an object image formed of said optical system.
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[Translation done.]
•Patent publication number 2011-27864
◦Publishing, Feb 10, 2011
◦Filing, Jul 23, 2009
•Implementation example 1
◦Focal length f=294.00mm
◦Fno=4.14
◦8. 24 ° Angle of view
◦Image circle 43. 28 mm
◦Lens length 245 mm
◦Back focus 86. 2 mm
•When shooting in runout
◦Human image stabilizer is approximately 0.1 to 10 Hz (low frequency)
◦Of a tripod is 4-35 Hz
◦Number of Hz etc vehicle camera-several hundred Hz (high frequency)
•For the image stabilizer of the conventional correction technology in mechanical movement, high-frequency fluctuations and cannot compensate
•Electro-optic effect if 100 Hz-kHz up to meet
•Patent technology
◦High-frequency blur to correction
◦Using electric Optics (electro-optic crystals)
◦Vary depending on voltage (electric) refractive index (electro-optical effect)
◦Asymmetric distribution of refractive optical axis.
