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DLP471TP: What is the Maximum Refresh Rate of DLP471TP if We Just Send 1 Bit Data to One Pixel?

Part Number: DLP471TP
Other Parts Discussed in Thread: DLP4710, DLPC3479, DLP4710LC, DLPC3439

Hello,

We are considering to use DLP471TP for Structured Illumination. We chose it because its micromirror pitch is 5.4um, quite small. We need to send the patterned image data to DLP471 to refresh at high speed. Hopefully, the refresh frequency is no less than 1KHz, which means we send new data to DLP471 every mS (millisecond).

We saw in the datasheet that DLP471 supports 4K UHD at 60 Hz, and 1080p up to 240 Hz, this is much lower than we need. Our question is: can DLP471 refresh at a speed higher than 1KHz if we just send 1 bit data/pixel to it? This means the data sent to each pixel is either 1 or 0, not as complicated as HD or 4K, and the communication bandwidth is reduced to a minimum.

This is quite different from its normal work mode, but if it can, then it will help us solve a difficult issue. 

If it can't, can you recommend some other models of DMD devices which can meet these 2 requirements: 1: micromirror pitch < 0.6um; 2: refresh rate higher than 1KHz?

Thanks a lot!

  • 不好意思有个笔误。最后提的需求里面,微镜的间距不是0.6um,而是6um,也就是0.006mm。我们之前评估过7.56um的型号,感觉有点太大,想找小点的。

  • 你的终端应用是什么,DMD每个微镜的刷新率有上万赫兹。

  • 我的应用是结构光照明,就是规则的明暗相间的图案,所以数据比普通的投影简单很多。

    你说的上万赫兹的刷新速度,是指的9000, 9000X或者6500这些吧?它们的确可以达到上万Hz,但它们的pitch比较大(7.56um),也不满足我们的需求。

    现在我们在看5.4um的DLP471或者4710这些,但它们的标称刷新速率都很低,4K模式下60Hz,HD模式下120或者240Hz。不知道它们是否支持1-Bit Binary模式?假如支持的话,是否可以达到1KHz以上的刷新速率?我们需要不低于1KHz。

  •  用internal pattern就行了,你可以了解一下DLPC347x系列,具体哪款看你对分辨率的要求。

  • 好的,看来我理解错了,我看官网上DMD选型页标注着input frame rate (max) 是60或者120hz,就以为这是它的上限了。

    这样的话那我就用DLP4710(或者471)配合DLPC3479了。DLPC3479的分辨率高些。这个没问题吧?

    谢谢!

  • 是的,注意购买DLP4710LC而非DLP4710

  • 这俩有啥差异吗?对着手册看了下好像是一样的?Joy

  • DLP4710搭配DLPC3439使用,主要用于投影视频等娱乐活动。

    DLP4710LC搭配DLPC3479使用,主要用于投影结构光等。

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