It is believed that many people know about SONY's HMZ head mounted cinema. In those days, the KMT paid 8000 yuan for rice objects. It can be said that SONY HMZ series has become the benchmark of head mounted displays. However, due to the rise of VR virtual reality, SONY cut off the original head mounted display project and began to move into the VR field. However, according to the conclusion of Xiaoke's experience, VR is still insufficient for personal viewing at this stage, Of course, there is no denying that VR virtual scenes and giant screens are more oppressive and intrusive, but it is an indisputable fact that the single eye effective pixels are too low and full of natural mosaics. VR will replace the head mounted cinema, but it will take a long time to achieve this.

After Sony stopped developing the headworn cinema project, it also released the sales of micro OLED panels. Of course, the resolution has been upgraded from 720p in the past to 1080p now, which has derived the rise of domestic headworn cinema systems. Xiaoke evaluated the first domestic 1080p headworn cinema system at the beginning of the year, but because the domestic project has just begun to explore, the product experience is somewhat inadequate, For example, distortion, blurred edges, dark color blocks, etc., which also shows sony's accomplishments in optical design, decoding, and image processing.

This evaluation is not in the popular HEIVIS 2 in JD crowdfunding. Because the product system sent by HEIVIS 2 has a problem and has been recalled halfway, I don't know whether there is a chance for horizontal evaluation. This evaluation is another group of dark horses in the field of head mounted cinema GOOVIS mobile 3D cinema, which is called the dark horse because the CEO of GOOVIS is a doctor engaged in research on information display devices and applications, Solved the out of focus problem caused by SONY 0.7 inch OLED when zooming into the visual effect of 20 meters and 800 inches through the lens set. Next, let's see how this mobile 3D cinema experiences in all aspects.

This time, the GOOVIS engineering machine that Nader Optics crowdfunded was submitted for testing. The complete machine is relatively complete. It should be the last version of the model before mass production, which is the closest to the mass production machine. Unlike SONY HMZ series, most domestic head mounted theaters are positioned for mobile viewing, and more consideration is given to size. It is true that the current audio and video decoding equipment has made much progress compared with that of the previous year.

About two pieces of Grandpa Mao's size, we can roughly understand how mini this mobile 3D cinema is after storage, which is smaller than the storage bag of the headset. Basically, we can also make a record of the smallest of similar products. The storage box is made of rubber and plastic, which has strong compression resistance.

When opened, the helmet can be seen. The headband and handle are fixed in the storage box in turn. The bottom of the storage box has molded grooves to facilitate user storage and prevent looseness during carrying. On the right side is the hdmi bus to USB+HDMI public conversion line, which is simply the HDMI power supply adapter line. Because the current may not drive the helmet display when connecting other HDMI playback devices, Additional USB interface is required for power supply.

The USB data cable and power adapter are provided with the machine. Of course, if you carry it outside, you can share the power adapter of your phone.

The main part is divided into helmet, headband and handle. The standard configuration does not provide earphones.

The shape of GOOVIS helmet is relatively smooth. The front is made of high gloss acrylic material and printed with LOGO. The upper forehead support is printed with enjoy your vision. Aluminum alloy structural parts are used to connect the display part. The damping is high when adjusting.

For the veneering part, the forehead support uses a perforated imitation leather wrapped sponge, which has good air permeability. For the veneering part, the anti leather wrapped sponge made of flipping material is used. Of course, it is also possible that the sponge material itself has flipping texture and soft feel. Although it is not memory cotton, it has a high affinity with the face. The detachable design can also be replaced after the veneering is worn.

The nose part is more suitable for the Asian nose shape. It has a built-in light sense, which will turn off the oled panel when recognizing the non headworn state, which can greatly extend the standby life.

On the right side of the helmet is an HDMI cable integrated with the helmet, and on the left side is an AUX3.5mm audio output port.

The optical part adopts a round lens set with upper and lower trimming. Within the allowable range, it can provide larger eyepiece size and reduce weight.

The bottom part provides 2d/3d mode switching, brightness adjustment, pupillary distance adjustment, diopter adjustment, large key cap, which is convenient for blind operation. Above the function key is the array vent, which should be based on VR design elements to effectively control the fogging phenomenon.

For the pupillary distance and diopter adjustment, the official parameter is 56-72mm, and 800 degrees can be adjusted independently, which can basically meet the needs of users with different myopic degrees of left and right eyes and with larger or smaller pupillary distance. The small one is that the pupillary distance is slightly larger. At least the pupillary distance adjustment range of Higgol Generation 1 cannot meet my needs.

The forehead support of the headband and helmet adopts a slot structure, which is very convenient for installation and disassembly. GOOVIS has made great efforts in the storage part.

The back side of the headband is equipped with an elastic device, and the part that fits the head is also made of perforated imitation leather wrapped sponge.

Gently press the button in the middle, and the knob will spring up. Gently twist it to adjust the tightness of the headband. This small structure is very exquisite, which adds a lot to the design of GOOVIS.

Looking from the top, we can feel the symmetrical and harmonious design style of GOOVIS. We can see that the cable parts on the left and right sides are all outward expansion angles, which will not conflict with the face.

The handle of GOOVIS also adopts the sleek design style of the helmet part, and undoubtedly adopts the Android system scheme, so the function keys are also the consistent style of Android. The left side is equipped with volume and power keys, and the front side is equipped with the five dimensional direction key, return, home page, and menu.

There are parameter stickers on the back, including model, 16G storage, 5900mAh lithium battery, and manufacturer information. However, I think laser or direct printing will be better, but it is said that this is just a sticker for engineering machine samples, and the scheme will be changed in mass production.

The handle parameters dragged from the crowdfunding page can be said to be mainstream configuration, HD source soft solution without pressure, 2g/5g dual band wifi can easily browse high-definition movie sources in LAN NAS. In fact, I have little demand for the chip performance of the Android platform. It is enough to easily realize online on-demand and local broadcasting. I believe that there are few people who play large-scale Android mobile games with head displays, focusing on the color and detail of the output image.

The right side of the handle is the power indicator and the TF card slot. It is said that the actual measurement is compatible with 256G TF cards, but the cost performance of TF cards is not as good as that of USB flash drives, which generally use 32G and 64G capacities.

Open the plastic cover at the bottom of the handle, and a MICRO USB and standard USB socket are built in. The USB is actually compatible with the external 3T hard disk, which can also be said to be satisfied with most use scenarios.

The hardware part comes to an end first. The impression of GOOVIS is that his original intention is to create an extremely portable personal cinema system. In structure, the convenience of storage is fully taken into account. A large number of circular design elements are integrated, and the design style with mellow touch is less vigorous and more gentle, which is not easy to make users aesthetic fatigue.

Let's see how GOOVIS experiences in wearing and actual appearance, especially in the praiseworthy optical part.

GOOVIS is also the lightest headworn cinema of its kind. The helmet body is measured to be about 220g, and the headband is more than 300g, which greatly reduces the force on the head when wearing.

Adjust the headband to fix the forehead support and back support with the head, and then adjust the forehead support and peeping angle to make the eyepiece part fit with the face. There is no light leak in the actual measurement, because the indoor light can not be detected after wearing it, and the size of the large headphone will not interfere with the helmet.

With the weight of less than 200g and the front and rear sponge pads, GOOVIS can be firmly fixed on the head without pressure on the forehead, and will not cause discomfort if worn for a long time.

In terms of optics, GOOVIS is more commendable for its diopter adjustment accuracy. The accuracy of each gear is 33 degrees, which basically fits the different myopic degrees within 800 degrees (the myopic degree is 25 degrees gradient). Therefore, GOOVIS is more accurate than similar products to adjust to the appropriate diopter. From the screen photo above, we can see that the center and surrounding are very clear, without defocus.

After simple debugging, a clear picture can be obtained. The following describes several important parameters in detail:

1) Size: FOV is actually affected by diopter adjustment. For example, if you take off your glasses, you will find that the object in front of you is much larger. I am 650 degrees high myopic. After mediation, you can get a completely clear and delicate picture. The perception is about 4 meters and 150 inches, slightly smaller than that of Higgle 1. If you are not myopic, you can get a larger picture.

2) Distortion: The distortion control of GOOVIS is very high, and the negative distortion of the edge can be detected through careful identification, but it is much less than that of the first generation of Hijing. Of course, the official propaganda of GOOVIS is less than 1.5%, and that of Hijing is less than% 3, which is true of the actual appearance.

3) Edge focus: GOOVIS has very clear image edges, including sharp subtitle edges, which can easily access all image information of the whole image. This is much better than Hi Mirror 1.

4) Telescope effect: The so-called telescope effect is an obvious circle outside the picture, which is mainly due to the small size of the lens and the formation of edge refraction. This GOOVIS control is also relatively good. There is no telescope effect in normal viewing. There is weak refraction and reflection at the edge of the lens when the picture is highlighted. It is said that the solution of blackening the edge will be tried later.

5) Fogging: This problem is at least at the indoor temperature of 18 ℃ and 9 ℃, GOOVIS It is a complete solution. As for the low temperature, it will take some time to know, and the solution is also excellent. As mentioned earlier, the heat sink on the lower side of the helmet has VR design elements. This time, the active heat dissipation structure of the popular Dapeng m2 VR all-in-one machine was also moved. The wind noise is well controlled, and it is difficult to identify if you do not listen carefully. When the eyes are extremely close to the lens, No fogging.

We should also popularize common sense here. In fact, the weight of helmet, lens size FOV、 Distortion and edge defocusing are all related to each other. Optics is actually a debugging art, balancing several parameters, and too large a picture will inevitably lead to the misalignment of other parameters. For example, VR has a very serious distortion problem, which can only be matched through reverse correction of software, The optical debugging of GOOVIS is relatively mature and cautious. With the weight of the helmet, the balance of FOV, distortion and edge focusing can be achieved, which also reduces the difficulty of debugging. It can be said that GOOVIS has a deep knowledge in optical applications.

In terms of the system, GOOVIS uses Quanzhi H8 with 8 ARM Cortex-A7 cores, so don't let me get away with it. It is more than enough for a 1080p physical resolution display terminal, The UI adopts the deeply customized Android 4.4, which has a sense of technology and a dark background gradient. The use of this color matching shows that GOOVIS has solved the problem of stiff color blocks and low grayscale transition of the Heijing generation. In terms of functions, it provides local play, network play, app store, settings, etc. It should be said that the positioning is very clear.

The setting part shields the setting menu of Android and adopts a customized setting page. The functions only involve WIFI, Bluetooth, storage, glasses adjustment, and local information, which is relatively simple.

Online content is based on Tencent's cloud audiovisual, and I feel that the content is richer than iQIYI, especially in American TV series and Cantonese TVB, mainly because I don't like watching nc reality shows and small fresh meat.

GOOVIS built-in local player only supports local The file reading of TF card slot and USB device cannot browse the video resources in the LAN NAS, so if you need to browse the resources in the LAN, you can install KODI by yourself. In the actual test, using 5G band WIFI, you can smoothly play 20+G Blu ray REMUX files, but for Blu ray disks above 40g, there will be a jam or even frequent caching.

The local super marine team, Shenzhan, Ninja Turtle 2 or so, and Jiupin Sesame official were broadcast locally. These film sources involved animation solid color transition, color performance, screen display effect, and noise control of early remake of old films. The performance can be said to be satisfied with ordinary users, but the real potential of this headworn cinema could not be tapped, Therefore, there is no introduction to the Android handle part. The 44khz forced sampling rate, no headphone amplifier circuit, and the configuration of online on-demand and 1080p 3D source decoding is enough for mobile use.

The next test equipment used is the A500 PRO of POPCORN HOUR, which is a player positioned to give consideration to both high-definition playback and digital HIFI audio source broadcasting, and adopts the chip scheme of SIGMA SMP8757, ESS 9018K2M DAC, LME49600 The earphone should be the best partner to cooperate with this 3D cinema. While obtaining high-quality pictures, it also provides surging thrust to the high impedance earphones. Unfortunately, GOOVIS generation has not yet supported third-party devices to identify GOOVIS as a 3D display, that is, it only supports left and right 3D cutting and lifting. In addition, although GOOVIS has attached an HDMI power supply adapter, it can be directly driven when connecting the A500 PRO, Personally, I think that the new player material has made great progress in HDMI power supply compared with the earlier equipment. I believe that a large number of players, set-top boxes and independent graphics cards can easily drive GOOVIS.

The earphones used Sennheiser's PVC450 earphones, which were bought when studying abroad. At that time, it was about 350 pounds. At that time, it was mainly because of the frequent travel by train and plane, so we chose this noise reduction earphone. The characteristic is that the sound field is wide, and you can make good sound when you push it directly, and there is more pressure when you watch movies with a wide sound field.

After using the popcorn a500 pro, the audio and video effects are basically equal to the positioning of SONY HMZ in those years. Although the portability is sacrificed, a higher quality audio and video experience is obtained.

First of all, the scene of the Avatar space station is clean and transparent, with very strong contrast, strong light and dark contrast, no color patches in the dark, and the transition is natural and smooth.

Due to the light perception problem of the mobile phone, it is impossible to capture the details of the dark part. When GOOVIS displays, the details of the upper highlight part and the lower dark part, and the skin lines are clearly visible.

During the 13th hour of the crisis, there were a large number of night shootout bridge sections and burning scenes. The explosion of sparks, burning flames, and the color transition of the outer flame and the core of the flame were very natural, without any drag and residual color. When the above figure was displayed in GOOVIS, the brick seams on the wall were clearly visible, but under the light of the mobile phone lens, it was completely dark.

Final Fantasy 15 can be said to represent the exquisite picture quality. Since cg animation does not rely on lens capture, but relies on 3D rendering, it reaches the extreme level of detail that can be achieved by 1080p. The fine hair on the princess's face can be identified in detail. Of course, the dark details on the king's armor are much more abundant, but due to the sensitivity of the lens, it cannot be captured.

In addition, we tested films such as Shenzhan and Hobbit Man, and achieved very amazing results. Then we tested 3D film sources such as Avatar 3D and Ninja Turtle 2 3D, and the screen effect was good, not less than my SONY HW55es projection, but the brightness and details killed HW55es. However, it is worth mentioning that the left and right 3D film sources were more than 10 g, after being pulled up and re pressed, The fineness of the image is obviously different from the original disk. It is not easy to identify it in the Android handle, but the burr of line transition can be clearly detected in high-end players, so if you want to enjoy the ultimate 3D effect, it is very necessary to natively support third-party 3D devices. I heard that GOOVIS has started to develop, and I do not know whether it is achieved by paying for an upgrade or buying a second generation.

In general, GOOVIS is a highly sophisticated headworn cinema product. Wearing and optical parts are no longer pain points. It has obvious advantages over similar products. The only two areas that I think need to be improved are the weak reflection at the edge of the lens and support for third-party 3D equipment. As long as these two problems are solved, There is no doubt that FOV will make further progress to replace SONY HMZ series. I hope this day will come soon, so that head display enthusiasts will have the opportunity to enjoy a more perfect visual feast.

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