关于OV的TRUE FOCUS技术的镜头！

hejun0323

15楼的朋友：
   OV不在国内推在哪里推啊？现在国外的高像素要么是用镁光的。要么就是CCD 的，他怎么推 啊？
   还是国内实际一些。
   单单镜头而言，现在虽然没是的确没有VCM贵，但是你又没有见过真正的ture focus？，暂且不说它配合的平台，它还要配合其他使用，无论从成本上还是生产难度不会比AF的小，不然怎么迟迟不见起量啊？

3homer

谁说国外高像素要么是用镁光的？ 昨天拿到一个黑莓上的3MP AF的 就是OV3647的是MDDI接口的

ICwolf

以下是引用hejun0323在2008-8-15 23:28:51的发言：
15楼的朋友：
                 OV不在国内推在哪里推啊？现在国外的高像素要么是用镁光的。要么就是CCD 的，他怎么推 啊？
                 还是国内实际一些。
                 单单镜头而言，现在虽然没是的确没有VCM贵，但是你又没有见过真正的ture focus？，暂且不说它配合的平台，它还要配合其他使用，无论从成本上还是生产难度不会比AF的小，不然怎么迟迟不见起量啊？

这位兄弟估计是卖VCM马达的.............

TRUE FOCUS 生产成本比AF低, 模组可靠性比AF的要高, 手机端软体调试和普通FF模组无差别,比AF容易多了.
至于为啥没起量, 我想国内用3M的手机没多少把, 再说TRUE FOCUS的SENSOR 也还没量产呢....

Lasert

1.波前编码技术对镜头的要求还是比较高的，要求一致性要相当的好，而且要增加波前编码滤波器，短期内成本不会下降；
2.sensor用于频域的算法比较复杂，die面积增加，buffer面积增加，所以sensor价格也不会便宜到哪里去；
3.TRUE FORCUS技术增加了景深，保证大多数拍摄会清晰一些，但是并没有增加图像的信息量，只是提高了信噪比，从根本上不可能取代真正的AF；
4.从生产成本和可靠性方面，液体AF镜头不会比TRUE FOCUS差，而且是真正的AF，速度也很快；
所以在AF领域，本人更看好液体镜头技术[br]<p align=right><font color=red>+3 RD币</font></p>

OpticLAB

液体镜头你试试看报85度高温做老化看看, 回到常温液体会变性!
[em10]

William

3homer 哪款黑莓啊, 告诉下
[em13][em13][em13]

supergxl

用了TRUE focus后，前面还可以再加镜头吗？我想用在望远镜上，呵呵

chiashow

To 22F,

Are you sure that RIM use OVT's 3M sensor?

I thought that should be ST's 3M VD6861 which has the MDDI also.

In fact, you can check QCom's reference design. ST is on the list not OVT.

chiashow

To 24F,

Liquid lens has serious reliability issues. Forget about it.

T0 27F,

Yes. The original deisgn of WaveFront coding is for the telescope and microscope, not for camera.
Because you need to observe the objects at extremely shallow DOF, thus we can accept to reduce the SNR to gain larger DOF.[br]<p align=right><font color=red>+5 RD币</font></p>

石子

以下是引用chiashow在2008-8-30 22:45:27的发言：
To 24F,

Liquid lens has serious reliability issues. Forget about it.

T0 27F,

Yes. The original deisgn of WaveFront coding is for the telescope and microscope, not for camera.
Because you need to observe the objects at extremely shallow DOF, thus we can accept to reduce the SNR to gain larger DOF.

   
    Hi, Chiashow.I think you would give more information about EDOF to we, if you pleasure! Thanks!

chiashow

The reason to introduce EDOF to the market is because of the pixel shirking.

Using smaller pixel pitch, it means we need larger aperture for the camera to have enough incident light. However, the trade-off of the larger aperture is the extremely shallow DoF.

We already have the technology to sharpen the image by de-convolution. Then some people try to design the lens system and hardware algorithm to try the EDoF for mobile imaging.

fanwen000402

啥时量产都说不准的，OV都不主动推，调它干嘛，还是做AF的吧。可以联系我。

gywood

D-blur、DXO不都有吗，做得比OV可能还要好，何必非用OV的

stone_shih

[upload=gif]UploadFile/2008-11/081112@52RD_truefocus_diagram.gif[/upload]