PICO投影仪（通常称为LED投影仪）是一项流行的新技术，它改变了我们观看电视的方式。这些投影仪比经典的样式型号便宜得多，并提供了一种廉价的方式，以不到几百美元的价格获得大屏幕家庭影院。
For classic bulb technology, it’s almost impossible to compete. Unfortunately, the projector marketplace isn’t a particularly consumer friendly environment. With many inexpensive Chinese manufacturers producing projectors with over-exaggerated specifications and disappointing performance, it’s easy to get ripped off. TheOgima BL20 Video Projectoris an affordable option that’s received many good reviews. If you’ve checked it out, you’ve probably realized that the specifications seem almost too good to be true. How does it perform in the real world? We went hands-on to find out.
First Look
我们注意到的第一件事是该投影仪的包装程度。虽然它比您的标准PICO投影仪大一点，但包装绝对比投影仪本身大很多倍。它完全封闭在模制的泡沫聚苯乙烯保护膜中。最重要的是，您会找到封闭的配件。
You get a full size remote, which is surprising for such an affordable projector. You also get a set of RCA cables, but no HDMI cable. There are also some leveling knobs included. These screw into the bottom, and raise or lower it to get the exact angle you like. The projector itself has a whopping 2600 lumens, making this one of the brightest LED projectors we’ve tested. It supports 1080p input, but the output will be slightly down-scaled. But to really find out how it performs, we’ll have to put it to the test.
Design
The BL20 is enclosed in a glossy black plastic. It definitely has an attractive, modern feel to it, although most users will be tucking this projector out of sight and out of mind. The lens itself is off to the far right of the projector, and there is a large quarter turn focus ring above it. The ring has a nice smooth movement to it, making it easy to get the exact focusing distance you want. On the back, there are several navigational buttons and all four sides are used for cooling vents. Overall, it’s reasonably attractive, and surprisingly well made for the price.
控件
One of the things we loved about the Ogima BL20 was the impressive control system. There is a full size remote included, which is intelligently laid out. The navigational buttons are located conveniently in the center of the remote, making it easy to move through menus. But upon closer inspection, you’ll find several key features that aren’t found elsewhere. There is a zoom button allowing you to crop 4:3 video, as well as an aspect ratio button that digitally corrects varying video styles. If you’re working with a smaller screen, this is a great way to help enlarge it without cropping.
这些遥控器上还有许多其他控件对投影仪没有用，而是对您拥有的其他设备。静音按钮，播放控件和频道导航使您可以将遥控器与视频源同步，因此您只需要一个控件即可。
Brightness
当我们看到漂亮的大镜头时，我们就知道这不会成为标准投影仪。大多数紧凑型投影仪的运行量低于1000流明。如果您在漆黑的房间里，这可以正常工作，但是一旦有任何环境光，图像质量就会开始被洗净并褪色。
通常认为2600流明是您需要的明亮的。实际上，通常在宽敞的日光下在户外工作2600名。但是对于我们来说，澄清这些不是ANSI流明很重要。ANSI是测量的标准，是指实际撞到墙壁的光。您可能知道，投影仪远离墙壁的距离越远，图像是。此外，通过光学元件运行的趋势是减少使其从投影仪出发的光量。
即使投影仪的额定值为2600流明，您的墙壁上可能会获得1500至1800个流明。这有多明亮？好吧，您当然不必担心拥有一个完美的黑暗房间。即使您戴着灯，或者太阳仍然升起，投影仪仍然可以很好地工作。在宽敞的日光下，亮度肯定会有些昏暗。但是，只要您可以关闭百叶窗，Ogima BL20仍然可以很好地工作。
解析度
Another important measure of a projector’s video performance is the resolution. The more pixels you’ve got, the better your image looks. Higher resolutions are attributed to sharper, better defined images. These days, we’re living in a world where 1080p is standard, and 4K is considered the ultimate in image quality.
看着Ogima BL20中,您可以看到在盒子上that it says 1080p right on it. But if you’ve shopped around for affordable projectors, this is rarely the case. In fact, many projectors only actually produce images that are standard definition. While this projector accepts a 1080p input, it’s downscaled. The true resolution of the display is 800×480. For reference purposes, standard definition is 320×240. So you’ve got something which is commonly referred to as EDTV, or extended definition television. It’s twice as detailed as standard def, but half as detailed as high definition.
从数字来看，这看起来还不错。但令人惊讶的是，它似乎仍然很敏锐。我们不会说这款投影机可以与$ 3000 4K型号竞争，例如Eosib 5040ube, but it’s still very enjoyable to watch. Details are well defined, and even things like subtitles are clear and readable.
颜色
令我们惊讶的一件事是，Ogima BL20上的颜色看起来多么好。它并没有像许多LED投影仪那样夸张和饱和，但是它也不像许多LCD投影仪那样平坦和柔和。很明显，供应商花了一些时间来校准显示屏以获取漂亮的调色板。它们有点柔和，但颜色似乎确实是真实的。
连接性
背面似乎不乏连接器。大多数用户将在HDMI连接器上欣赏他们的节目。有两个可用的，因此您可以插入蓝光播放器，游戏机或其他任何高DEF电子设备。您还可以获得第三高DEF设备的RGB连接器，而VGA则可以从计算机上获得模拟信号。
标准设备有标准的RCA音频和黄色组件输入，以及简单标记为电视的同轴输入。但是对于大多数消费者来说，电视输入将无用。这是Euro Spec TV的输入，在这里通常找不到。但是，有一些适配器可让您插入天线。在大多数城市地区，这使您可以在空中获得HDTV，因此对于您的那些人来说，这可能是值得购买的。
缺点
尽管这台投影仪有很多好处，但我们并不特别喜欢一件事。调平螺钉仅是一个单元。抬起时，您有一条腿支持整个投影仪。这限制了您的范围，并可能导致它有时会变得有些摇摆。我们的建议？如果您需要极端的角度，请获得天花板安装座或使用旧书来支撑它。
Final Verdict
关于Ogima BL20 Video Projector。虽然它不是一样紧凑small LED projectors, it’s becoming abundantly clear to use just how much more performance you get for a small increase in size. The most impressive boost, of course, is the brightness. This projector can be used in virtually any room. Just dim the lights, and enjoy an image that looks just as bright and clear as a television. This is typically the major downfall of affordable projectors, so it’s nice to see it corrected.
Combined with excellent color reproduction and a reasonable resolution, we’re confident in saying that this is one of the best bang-for-your-buck projectors on the market.
