“Kết hợp độ phân giải 4K UHD chân thực cùng với hỗ trợ HDR / HLG, công nghệ LED thế hệ thứ 3 tiên tiến và thông minh, thiết kế di động, X11-4K mang đến trải nghiệm nghe nhìn sống động.”

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Now you can turn your mobile device into an alternative powerful remote control – intuitive touch control, easy typing, and simple annotation on the big screen. Simply download the ViewSonic vCastSender app on your phone, make sure your phone and the projector are connected to the same Wi-Fi network, and pair them up in the app to get started.

Empty claims - false magnification or is it the other way round? We have all visited microscopy websites that advertise "1,600x" or '2,000x" compound microscopes and "90x" stereo microscopes, but what they are really advertising is Empty or False magnification that is mostly useless.

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* These two objective/eyepiece combinations fall below the Minimum Useful Magnification range. This is usually set at 500 times N.A. However, it is highly arbitrary and all our microscopes operate effectively with 10x eyepieces and both 4x and 10x objective lenses.

Bother no more finding the right command button in the dark cinema. With a built-in G sensor, the smart remote control lights up automatically at your service upon the lift. The special coating with silver ions provides antibacterial capability certified by TÜV, caring for your health while being entertained.

Anyone looking to buy a microscope knows, or quickly learns, that the total magnification of a microscope is arrived at through the simple expedient of multiplying the power of the objective lens by that of the eyepiece. So a 10x objective plus a 10x eyepiece = 100x magnification. And a 100x objective lens with 20x eyepieces = 2,000x magnification - right?

No need for central positioning. Comprehensive H/V keystone and 4 corner adjustment capabilities present perfectly shaped images from above, below, front or side.

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Bother no more finding the right command button in the dark cinema. With a built-in G sensor, the smart remote control lights up automatically at your service upon the lift. The special coating with silver ions provides antibacterial capability certified by TÜV, caring for your health while being entertained.

Tired of staring at a blank screen waiting for the display to get started? We revolutionized the stereotypical projector start time allowing you to turn the X11-4K on in an instant - just like you would with a regular TV.

True-to-life colors offered by ViewSonic's proprietary Cinema SuperColor+™ Technology with 125% Rec.709 give an unparalleled cinematic experience.

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The important thing to note about Table 1 is that the higher power eyepieces (15x, 20x and 25x) do not operate effectively in combination with the higher power objective lenses. In other words, it is meaningless to advertise a high power, compound microscope as "2,000x Magnification" since it does not work. In reality, standard, light microscopes are designed for a maximum of 1,000x magnification....so, please - don't waste your money on claims of higher magnification via higher power eyepieces.

As a result, while your image will be magnified 1,000 times, it will yield no further useful information or finer resolution of detail. Quite the contrary, you will likely experience significant to severe degradation in resolution. The image becomes blurry in much the same way as when you try to zoom in on a webpage. It gets bigger, but there is no improvement in the resolution; no improvement in the amount of detail you can see. To quote Nikon, "In fact, excessive magnification introduces artifacts, diffraction boundaries, and halos into the image that obscure specimen features and complicate the interpretation of visual observations.

Enjoy the crystal-clear detail of true Ultra HD and dynamic-looking visuals with HDR support. With 8.3 million pixels projection, all 4K movies, games, sports, and streaming content come to life with vibrant. ​​

Create and share amplified enjoyment in an instant. Thanks to the embedded 5GHz fast speed Wi-Fi connectivity, you can cast or screen-mirror content from your devices at hand to the big screen without a single cable. * iPhone and Android phones supported but must be connected under the same network as the X11-4K.

Enjoy quality sound on your terms. Use the X11-4K as a Bluetooth speaker to get the party started, or connect your Bluetooth headphones and immerse yourself in your own world of big screen entertainment.​

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Lie back and immerse yourself in seamless spectacle without a single second missed. The X11-4K features Frame Interpolation technology, which reduces motion blur and makes for smooth delivery of fast-moving images.

So why do you need higher power eyepieces. Typically, you do not and you should not be bamboozled into paying extra for microscopes with additional eyepieces unless you have a specific requirement to isolate something in the field of view. For example, you may wish to measure an specific element in a smaller field of view using a reticule. In other words, there are some applications that may warrant higher power eyepieces. For general purpose use, however, they are at best not required and at worst, a waste of money. With that in mind, we sell just one microscope, the OM88, with additional 16x eyepieces. This is a popular microscope with doctors and clinics and the 16x eyepieces operate at the maximum useful magnification for the 40x objective lens.

OK! Now use a 100x objective lens with an N.A of 1.25 and 10x eyepieces. You achieve the same level of 1,000x magnification. The difference is that not only do you achieve higher magnification, but you also benefit from improved resolution. In other words, you can see materially better details in the image. Why? Because you have not exceeded the maximum useful magnification of 1000 x N.A, which in this example is 1000 times 1.25 N.A (1.25 x 1,000 = 1,250).

Luxurious leather and metal surface textures combine in perfect harmony on the X11-4K, heralding a new standard for premium home entertainment devices.

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*Devices must support USB Type-C video streaming.*Apple-authorized Lightning to HDMI adaptor required for iPhone and iPad users.

Setting up has become more convenient now with 0.8X-1.0X digital zoom function. Zoom out the projected image to fit your desired screen size from the same distance without having to move the projector.

Instant and accurate distance ranging on any surface using the industry-leading Time-of-Flight (ToF) technology delivers perfectly focused visuals in any space within seconds.​

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Utilizing reflective light, which bounces off the wall or projector screen before hitting your eyes, the projector makes the viewing experience virtually blue light-free, is less invasive to your sight and reduces eyestrain over prolonged viewing periods.​

Having read this far, it should come as no surprise to know that every compound microscope is designed and sold with 10x eyepieces as the standard benchmark. There is minimal benefit in using higher power eyepieces and considerable disadvantages. As if this were not enough, there are very few and rarefied applications in light microscopy that actually warrant higher magnification than 1,000x. By the same token, over 90% of stereo or low power applications employ magnifications of less than 45x.

Project content directly from your phone or other mobile devices via USB Type-C while simultaneously charging it. Stream videos, FaceTime with friends, or play Nintendo® Switch on the big screen without a docking station, all through a single cable.​

The X11-4K has a versatile array of connectivity including USB Type-C, two USB Type-A ports, and two HDMI 2.0 / HDCP 2.2 ports that ensure access to original 4K quality content.Additionally, its 12GB of local storage allows you to save your favorite content directly onto the projector.

False magnification is when the power of the eyepieces employed pushes the maximum useful magnification above 1,000 times the numerical aperture (N.A). For example, you can achieve 1,000x magnification by using a 40x/0.65 N.A with 25x eyepieces. However, the total magnification of 1,000x exceeds the value of 0.65 N.A multiplied by 1,000 (1000 x 0.65 = 650).

If you were to use a microscope camera with the two different objective lens/eyepiece combinations, you would see an even greater difference in clarity and detail between the two solutions.

The theater-level speakers customized by Harman Kardon deliver contagious and sensational audio for an all-around immersive experience with dual sets of tweeters and woofers.

With HDMI ARC, the X11-4K can transmit and return audio signal over a single cable, reducing the extra audio cable between the projector and external audio system.