After years of rapid development of the projector, there has been a great trend of catching up with the TV in the latest, especially after the emergence of new 4K solutions and new light sources such as lasers, the projector on the basis of its inherent advantages of large screen, picture quality It has also been greatly improved, making it rapidly popularized from the commercial space to ordinary families and becoming the new darling of the living room. 
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Today we will evaluate this projector is from the Optoma's 4K main model, which uses a DLP 4K solution, although it is a ** lamp light source projector, but according to official promotional materials show its quality performance Quite good. Especially rare is that this projector has a very high cost performance, its price is pulled to within 10,000 yuan, the potential audience is very large. Here we come to a detailed analysis of this projector.
Optoma UHD520 Appearance and Details
Optoma UHD520 overall appearance is more square, basically inherited the Optoma projector product design style. Projector appearance size is 396x281x118 (mm), net weight 5.4KG, from the physical parameters point of view, this 4K projector compared with other ordinary 1080P resolution full HD projector is not much difference, the body control to do a very good job.
Optoma UHD520 lens is located on the front of the fuselage, which is a common practice of traditional projectors, and it is very convenient for both front projection and ceiling mounting. Around the lens there are Optoma brand LOGO and round remote control signal receiving window. The addition of the frontal silver waistline and the lens ring make a nice embellishment for the entire body, and there is a little more cleverness on the basis of the white main colors.
The lens supports manual focus and focus, the focus ring is located on the lens outer ring, and the focus dial is located above the body. Optoma UHD520 uses a 1.3x optical lens, which only requires 3.2m-4.2m to throw a 120-inch large 4K picture. There is also a knob next to the focus dial. Its function is to adjust the overall vertical displacement of the screen.
There is also a square keypad above the fuselage, and some of the main control options can be done with these buttons. There is a bar-shaped remote control signal receiving window above the button area, which is convenient for receiving signals when lifting. There are 3 indicators below the keypad.
Optoma UHD520 has excellent performance in both dust and heat dissipation. There is a large-area heat-dissipation grille on the front and left and right sides of the fuselage, which can quickly transfer the heat generated inside the fuselage into the external environment, thereby reducing the temperature of the fuselage and effectively prolonging the service life of internal components. purpose. With regard to the body temperature, we will conduct actual tests in the actual measurement.
A dust filter is specially installed on the right side of the fuselage to filter out some of the large particles in the environment as well as hair and other dirt. The dust filter adopts a cleanable and replaceable design, and the full screen of the filter can be seen by pulling out the filter through the card slot at the bottom of the fuselage.
All interfaces are set on the back of the fuselage, Optoma UHD520 interface is quite rich, to meet the current needs of commonly used devices, the interface includes a VGA interface, 2 USB ports, 2 HDMI interfaces, 1 MHL interface , 1 RS232 interface, 2 3.5mm audio input and output ports and a fiber optic interface and 12V relay interface. In addition to these interfaces, there is a power connector and an anti-theft lock hole below.
Optoma UHD520 supports two kinds of projection methods: front projection and ceiling mount. There are 3 support legs and lifting screw holes at the bottom of the projector. It is very convenient to install. The support legs are designed with retractable knobs and are equipped with soft foot pads to prevent accidental falling risks.
Four Tips to Make the Screen Better
After several decades of development, projectors have gradually entered the home environment from the commercial space. However, compared to televisions, ordinary projectors still have some disadvantages in addition to the larger picture size, especially the pictures. In terms of quality, contrast, and color gamut, the weakness is very obvious.
Optoma UHD520 adopts a new solution, which not only achieves 4K resolution, but also greatly improves the picture quality accuracy, and the cost is greatly reduced. The high unreasonable price of the 4K projector has been directly increased to less than 10,000 yuan. Provides the basis. In addition, Optoma UHD520 also uses four core technologies in order to improve the overall picture quality. What exactly is it? Let's learn together.
DLP 4K UltraHD Solution
Optoma UHD520 is equipped with a DLP 4K solution to achieve 4K ultra-clear picture quality, with up to 8.3 million pixels of picture display performance, in full compliance with the 4K resolution specification proposed by the CEA Association. This solution uses a DMD digital micromirror as a key processing element to implement a digital optical processing process. Through ultra-high-speed processing, the distortion between the pixel and the resolution is neatly avoided, and all 8.3 million pixels are completely displayed on the screen, faithfully presenting 4K UHD. Full details of the film.
RGBRGB six-segment color wheel
Optoma UHD520 adopts a cinema-level RGBRGB six-segment color wheel design. The color gamut performance is 100% conforming to the HDTV's REC.709 color gamut standard. The color is rich and full, and the natural color is restored with fidelity. And because the six-segment color wheel enhances the amount of picture processing per unit time, it effectively reduces the rainbow effect of moving images and edges when the high-speed motion picture is displayed, the video dynamic effect is better, and the color of the image is more abundant and more beautiful. .
HDR high dynamic range
HDR is a picture enhancement technology that has been extremely hot in the television industry in recent years. The OHD code UHD520 is also equipped with this technology, which brings better brightness and darkness contrast to the picture and presents a more realistic, natural and vivid picture. The details of expression are also better.
Ultra Detail display technology
The 4K projector provides more detailed images through 8.3 million pixels, but is limited by the physical effects of projection. The effect of the screen is not optimal to a certain extent, and the involvement of the UltraDetail edge enhancement tool enables users to With a clearer and more detailed picture, it sharpens the entire picture by enhancing the edges of the projected image content. Especially for projectors with 4K resolution, UltraDetail technology enables the high-resolution properties of 4K projectors to be fully rendered.
Through these enhanced image quality technologies, the OHD520 Aurora UHD520 achieved a great breakthrough in overall image quality, which provided excellent visual effects for users. In addition, Optoma UHD520 also supports PC 1080P 3D format, with 3D eyes to watch stereoscopic movies.
In terms of ease of use, Optoma UHD520 is equipped with keystone correction and vertical lens shift function. The former can adjust the distortion of the image caused by the tilt of the projector, while the latter can achieve a rapid and overall translation of the projection image in the vertical direction without re-keystone correction.
Optoma UHD520 performance measurement
In this part, we will quantify the performance figures of Optoma UHD520, and test the overall performance of this 4K projector through various practical tests.
Color test
In terms of color accuracy, Optoma UHD520's performance is equally good, and the red, green, and blue primary colors can be faithfully restored.
Brightness test
According to the official parameters, Optoma UHD520 has a brightness of 2300 lumens, which is a relatively good result for a projector with a conventional ultra-high-voltage ** lamp as its light source, even in a light-filled environment during the day. Excellent image quality, reduced interference with contrast and color, and practicality. In actual tests, we used the illuminance meter to measure the brightness of this projector. Actual results show that the brightness of the Optoma UHD520 has reached 2320 lumens, because the test environment has certain limitations compared to the standard laboratory, so There are certain errors that are inevitable.
Resolution test
As a 4K projector, in theory, Optoma UHD520 can present a 8.3-megapixel 4K UHD picture. How about the actual performance, we use the 4K standard clear line chart to explore.
The actual projection results show that the Optoma UHD520 can perfectly present the details on the standard map, even if the end of the thinst line can be achieved completely, and truly 4K resolution projection.
Noise test
In terms of noise, we use a decibel meter for testing under normal boot and in silent mode. The noise level at a distance of half a meter from the projector is 39.2 dB, and the noise level at a distance of 1 meter from the projector has dropped to 29.5 dB, and the overall noise is quite low.
Power test
In terms of power consumption, the Optoma UHD520 measured 0.55 degrees of power consumption after 1 hour and 50 minutes of normal use, and used an average of 4 hours per day. The power consumption per month is only 36 degrees, and the power consumption is very good.
Actual projection screen screen reference
In order to display the actual projected image quality of this projector more intuitively, we use the camera to take a screen shot of the projection screen. Due to the shooting environment and limitations of the shooting equipment, the following pictures may not be able to completely restore the live picture of this projector. Quality performance, for your reference only. (The picture on the left shows a screen shot, the picture on the right shows a 4K original, and the photo has not been modified except for the size cut)
Static 4K screen comparison
4K HDR video display
From the actual projection screen of Optoma UHD520, we can see that this projector does have a decent image quality level, and it is more faithful to the natural reduction of color, and the brightness and contrast are excellent, and the details of the screen can be clearly presented.
Optoma UHD520 evaluation summary
Through the above tests, I believe that everyone has a relatively comprehensive understanding of this OTU code projector UHD520. As a 4K projector within 4 thousand yuan, Optoma UHD520 can fully meet the needs of the vast majority of home users, whether it is the overall performance of various materials such as workmanship, ease of use or picture quality. For solid, especially audio and video performance, its performance has exceeded the quality of this price projector.
Compared with laser 4K projectors or large-screen 4K TVs, which are tens of thousands of times more powerful, Optoma UHD520 fills the gaps in the market and successfully completes the product replacement, not only satisfying users' demand for super-large-screen viewing. It is also possible to find a balance between high quality and price, and to achieve high cost performance. We believe that it will shine in the future market performance.
It is somewhat regrettable that although this projector is equipped with two 5W power speakers, the sound quality is not ideal. For users who are pursuing the ultimate audiovisual experience, it is recommended to use a fiber-optic audio interface to connect home theater systems. Get a more stunning viewing experience.
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