Oculus Rift CV1 foreign media evaluation summary: imperfect breakthrough technology

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First look at the specific equipment of the Oculus Rift CV1: resolution 2160x1200, provided by two OLED screens, each 1080x1200; refresh rate of 90Hz, viewing angle of 110 degrees, installation of infrared cameras, can track 5x11 feet of space, weight 470 grams, built-in Headphones, with Xbox One controller and wireless remote control.

Today we will summarize the evaluation of the Oculus Rift CV1 by foreign media:

Extremetech: Inconsistent attitudes between traditional media and technology media

There is a little consensus on CV1: "Eve: Valkyrie" is a cool game. It is a killer app for Oculus Rift. In the past few years, I have experienced "Eve:Valkyrie" at the show. In my opinion, "Eve:Valkyrie" is the best work I have ever seen. With reference to major media evaluations, such as Ars, CNET, Engadget, The New York Times, The Wall Street Journal, and The Verge, we will find that no VR game is badly criticized and there is no big difference. The problem, as can be seen, is that Oculus's game product is still very powerful, but there is no "must have" work.

There is a disagreement between the evaluation of mainstream media and the evaluation of technology media. For example, The Verge and Ars reviewers used VR helmets, including the previous generation of Oculus Rift helmets, and they believe that the installation of the product is quite simple. They also stressed that the hardware is evolving. Although there are some problems, it is much better than the products 2-3 years ago. The Wall Street Journal differed in its opinion that 13-foot-long cables are inconvenient and that users have to install different components and power lines. The process is very confusing.

Here's how we commented on the Wall Street Journal: “You used to look down and you can see the 16 buttons on the controller. It's not alright. The player needs strong muscle memory. Rift is equipped with a second remote control. It's very Small, you can perform some simple tasks, but like many Rift experiences, using remote control is not easy. Don't forget that there is also a Windows PC in the middle, it will bring some challenges. We must manually upgrade the graphics driver Although our PC is very powerful and optimized for Oculus testing, there are still Caton images in some games."

Everyone may ignore this difference because the core game players and ordinary users are different. The installation of Rift is more complicated than other peripherals. The technology media did not ignore this point. The Verge pointed out: “Because most PCs only have one HDMI interface, your monitor can only use different connection methods. For most people, the installation is The process is a bit tedious and not intuitive."

Oculus Rift is a new technology. Whenever new technology emerges, there will always be a learning process. This is a pain point when the product is on the market. If I were Oculus, I might worry that the non-technical media is too solemn about the problems encountered by deep players. If Rift and other VR helmets want to become mainstream, the only way is to make the installation and configuration process as simple as possible.

Some reviewers are excited about VR, while others are far cooler. The Wall Street Journal's reviewers are certainly not very excited. The New York Times also recommends that consumers wait and wait for other helmets to go public. It is widely believed that VR marks the beginning of the game revolution, but evolution is still in its early stages.

If you ask: Is it suitable for purchase now? There are more people who say no more. CNET wrote in the evaluation: "You must try the Oculus Rift helmet. It is really a breakthrough product. It is only temporarily not recommended for purchase, because you really can't find the reason to buy it now."

Ars Technica pointed out that although core fans may like Rift, other people are better off waiting, because competition will force the product to improve performance and lower prices. The Verge did not explicitly talk about this issue. It just said that the Touch controller is ready to launch. Only the Controller launches the Rift to usher in the golden era. Of course, the controller will cost more. In all media evaluations, Engadget is positive. It just thinks that Rift's price is too high, so it is difficult to recommend to users, although the price is completely understandable.

Kitguru: Don't worry about dizziness and nausea

In most cases, Oculus can prevent dizziness and nausea. All experience and games provided in the program store, Oculus has proposed the minimum quality requirements, everything is rated with "comfort", so that users can know if they are ready.

There was only one kind of experience that I couldn't accept. It was Epic's film Showdown, which showed the 2015 war. I really don't know why Oculus had to provide this kind of content. Its comfort was so bad that it was uncomfortable in every respect. Other games made me obsessed with such as "Lucky's Tale" which was developed by Oculus himself. Just sometimes the camera's movements made me unprepared.

In general, Rifti will not have the problem of dizziness and nausea. Oculus is doing well, dizziness and nausea are almost never a problem. However, Rift is not perfect.

If the way of tracking is correct, Rift can provide a good experience. The Constellation camera is fully adequate for sitting and standing, and it even supports a certain degree of movement. Unfortunately, the vertical tracking ability of the helmet is annoying. If I bend over to look at the ground or stand too close, the helmet cannot be tracked.

The helmet itself is well-suited to wear and has a good balance. However, the face will be imprinted after playing for a while, which is also unpleasant. Because there is no Touch controller, some game experience is not good, I miss Vive Chaperone function (add the scene in the real world to the virtual screen in front, can protect the user's security), without this function, I mostly I can only stand quietly because I fear that if I move too far, I will hit the wall or the table.

Because there is no "window" to have access to the outside world, the Rift experience is less immersive than I imagined. In the process of playing, I will constantly remind myself that something is there, be careful not to bump into it. The Chaperone feature can display digital networks. You don't have to worry about bumping into something. I don't think Rift is a big missing feature.

Then summarize the advantages and disadvantages:

Advantages: Helmet can be well matched with people, weight distribution is close to perfect, very comfortable, and can be used for a long time; excellent visual effects, some scenes can bring a strong field of phenomena, the screen "window effect" is almost non-existent; Interactive and passive experience can be well integrated; built-in headphones are good; viewing 360-degree movies is a great enjoyment; Oculus Home is beautiful, but lacks some key features; future development potential is huge, and no doubt, everything will continue to improve.

Disadvantages: There are textiles on the helmet, wear is a worrying issue; if you use a long time, your face will leave traces; the game is a bit small, some games do not support motion control; lack Chaperone-like features, Affects VR comfort; the wires are annoying on the side; sometimes not compatible with Steam VR; helmets are not cheap.

PC PowerPlay: Bringing Fun

CV1 has some amazing things. Its revolutionary nature is as shocking as the first time I played 3D games. I used to enjoy the virtual world through a 2D window. Now I am really in the virtual world and can look around and cross the virtual world. The immersive experience has made a huge leap forward, and even some of the simplest experiences have brought endless fun. Because of this, some games are extremely simple, but they are fun to play, at least for the first few hours. When new feelings subside, some simple games appear dull and dull. Fortunately, there are many excellent games to choose from.

I didn't find any experience that would be dazed and disgusting. I don't know why. Is it because I've spent a lot of time playing VR helmets? Oculus rated the comfort of each game with three levels: "Comfortable", "Moderate" and "Intense". Even for the last game, I didn't have any obvious discomfort. Yes, there were some headaches in the first few hours, but the longer it took, the more headaches disappeared. I also encountered the same problem when I started playing first-person shooters, like VR, but the headache only lasted 1 day or 2 days.

Is Rift CV1 so much money? If there is no competing product, I would not hesitate to recommend Oculus Rift. HTC Vive has been on the market for several months and is priced at $799. Although the two products look very similar and the configuration is basically the same, the HTC Vive includes two motion controllers, as well as room-size tracking, so Vive's experience is better.

Overall, the Rift CV1 is an incredible product. It provides unprecedented quality of VR. However, there are still some minor flaws. I think that all head-mounted displays (UMDs) in 2016 have the same problems. Especially the problem of resolution and halo.

Rift CV1 has some advantages, such as it is the first real consumer VR helmet, very comfortable to wear. As for the shortcomings, there is no Touch controller to count one, the resolution is not high so that some details of the scene can not be perfect, the helmet The price is also a bit high.

New York Times: VR is just getting started

Rift's graphics, sound, and head tracking system feels like science fiction. Although the installation of the system is a bit complicated, the helmet's image quality is smooth and the design is excellent. It seems that VR helmets can finally usher in the golden age.

If you are ready to wait and buy again, you'll surely get a bigger return.

First, Oculus postponed the release of the motion controller Touch until the end of the year. According to my experience, in VR applications, motion controllers are more natural to use than game controllers.

PlayStation VR will be available in October. What games will it bring? We should also look at it. Some analysts say PlayStation VR has an advantage. The lower price is one reason. PlayStation VR and PS4 and accessories add up to $800, which is equivalent to half of the full Rift system.

Zuckerberg once said that VR has just started and I agree with this statement. At the launch of Rift, there were only 30 games and a few APPs. So far, the system is not very useful. Oculus needs more content.

I will continue to wait!

Wall Street Journal: Unable to share with others

About VR, many people are talking about a problem: sensory overload. For me personally, the problem is loss of sense. Before using the helmet, we had to clean up a space and the Oculus Rift couldn't give a hint when it came to the edge of the space. We'd better set our own guardrails so that we don't bump into obstacles. Even within the space, we will feel uncomfortable. What are the people around me doing? Say what? Users simply cannot know. The Rift should add a button to the helmet to automatically show the current environment.

The Oculus Rift is equipped with an infrared sensor that senses the user's movements in 3D space and helps the user move around in the virtual world. There is another problem with VR that cannot be shared with others. If we are playing a Wii, we can play tennis with others. If we use Rift, people can only see us waving their hands. Of course, we can network to play Rift with others, but Facebook does not provide much interconnection.

Arstechnica: There are many minor issues with component improvement software

If the user's stomach feels uncomfortable during use, no matter how comfortable the Rift is on his head, it is no use. Some people had previous severe vomiting after using the Oculus Development helmet. Fortunately I didn't use the Rift to feel this way.

why? This is partly due to improvements in the underlying components of the hardware. The image displayed by Rift runs steadily at a rate of 90 frames per second and no image smearing or blurring can be seen. Because of the increased resolution, the virtual world looks more realistic and does not make people nauseous. Although the Rift image is still a bit blurry, it has little effect. During my entire use of the Rift, the tracking function worked well. When I leaned over or turned the chair, if the range of movement was only a few feet away, the new pedestal camera could be precisely tracked.

The Oculus APP lacks some features and some applications are quite simple. For example, you can't modify the default APP storage target, which can only be stored in the C Program Files (x86) Oculus file. If you plan to put the game on the second hard drive or in a specific file, you can't do it at all. An Oculus spokesperson said the problem will soon be fixed. When we play a game, we cannot download another game at the same time. This setting may be to prevent the CPU driving the VR from being overburdened, and as such, when we are playing an application, we cannot prepare for the next application.

Although Rift may bring about revolutionary changes, so far, Rift has not had a great impact on the way people interact with PCs. The development of new display technology is still in the stage of “only waiting to be seen and played”. The helmet is mainly controlled by the Xbox One handle, and the operation mode of the handle is completely different from that of VR.

Rift is similar to the first-generation product and resembles the first-generation iPhone. Ten years ago, Apple introduced the first-generation iPhone. The camera is bad and there is no APP Store. The revolutionary nature of Oculus Rift is still limited. If the limited potential of VR is not enough to convince you to order a helmet for $600, then wait and wait until the performance of the product increases and the price drops.

CNET: The whole person is between real and virtual

Wearing Oculus Rift, my head is in another world, and the rest of the body is still in the wall. I cannot escape the feeling that the whole person is between real and virtual.

In the living room, a line was attached behind the helmet. I dragged the 13-foot line into the virtual world and the line was connected to a powerful computer. When I sit or stand, the camera tracks the movement of the head. Built-in headphones can transmit 3D sounds. I know where the shot came from.

If the speed of movement is too fast, or something obstructs the sensor, the movement of the real world and the movement of the virtual world will become disjointed. If the game turned me in a certain direction and the body itself did not turn, I knew there was a problem. If I don't play for hours, I sweat and feel sick.

So I would choose to sit or stand while playing and not walk around.

About the Oculus Rift is a little exciting and puzzling: how good the Rift is at a glance, it's easy to understand.

Why is it easy? Because competitor HTC Vive has told us that users can put their hands and feet into the virtual world, not just the head. We can reach out and grab the target with the HTC Vive motion controller and we can walk in the room. The Oculus Rift will not work until the Touch Action Controller is launched.

There are also some experiences Oculus will add, such as social interaction. In the future, we can watch movies, enjoy concerts and watch games with friends in the same virtual room.

You have to try the Oculus Rift, which is highly groundbreaking, but don't buy it now because you can't find the reason to buy it now. The longer you wait, the later you buy and the more you buy. Oculus has just started and VR is moving toward the future.

The Verge: The game is very immersive

No matter what you can do, there is no doubt that games such as "EVE: Valkyrie" and "Chronos" bring the helmet the most immersive experience. When we talk about VR "immersive" experiences there are actually two. The first is a sense of reality that combines the body with the virtual presence. The second is that role-playing games are completely immersive, such as "Radiation 4". In this experience, you will not notice even if you play the whole weekend. The former experience is similar to "I'm really here" and the latter experience is similar to "I never left." In the first experience, the Oculus Rift is not as powerful as the HTC Vive because the Touch controller is not yet available. But its second experience may be better.

Playing non-VR video games is a bit like taking a sit-in, but my movement is smaller in the Rift because I'm more attentive and won't get distracted, such as a phone call or a drink of water. Every time Rift is activated, the Oculus warning display tells me: "With the helmet, you can't see the surrounding environment and you can't hear the sound around you." In the third-person experience, you can't even see your body. . I played a stand-up VR game. After I finished playing, my arm felt pain and everyone sweated. After sitting in the Rift for a long time, the whole person felt very tired. Just like playing a full-night PC game, there were occasional nausea and eyestrain.

Will VR have potential medical risks? I didn't mean to give you advice, but I didn't find any similar problems in using Rift. If you play VR for a long time (a few days, not hours) it will make your eyes' vision drop in the short term, and the eyes will suffer some damage after hours of playing, just like the effect of watching the computer screen at night. As early as a few months ago, I discovered that frequent rotations of the head can cause pain in the neck and shoulders. If the game requires the user to quickly move with the controller, it will feel uncomfortable.

PC Advisor: VR games are more exciting than PC games

Wearing Rift was extremely comfortable, but I still found it had a problem. The helmet before this problem had also been: Leakage. Although the helmet is close to the head, there is still a lot of space in the nose where the light leaks in. The gap is large and I can see my own feet. I try to avoid looking down, but I have to admit that light leakage hurts the overall experience. Yes, the shape and size of the nose are different, so you have to leave more space, but PlayStation VR and HTC VR do not have such problems.

When I solved the light leakage problem and started to enter "Eve:Valkyrie", I was shocked. I used to play "Elite:Dangerous" with HTC Vive and it was beautiful. The experience provided by "Eve: Valkyrie" was not that complicated, but it was equally good. I sat in the cockpit of the battleship. Within a few seconds, I took off from the battleship and joined the battle.

The tracking function of the Oculus Rift is smooth and stable. The screen did not split, the frame rate did not drop, there was no tracking failure during the entire process, I can immerse in the game. In the game, I look at the spaceship and can even see what's behind it.

Exciting scenes emerged: A large number of enemy planes appeared. We fought in the asteroid belt and the enemy wanted to shoot me down from the sky. In a standard battle game, we have only one perspective to watch (forward), but in VR we can observe chasing enemies and you can shoot behind them and blow them into pieces. "Eve: Valkyrie" is a good example, it is a model of VR games.

The asteroid flew over my head and the enemy plane exploded in front of me. I had endless happiness, and I was more energetic than playing any standard PC game. I can assert that "Eve: Valkyrie" is definitely a flagship VR game and so far it can only be played with the Oculus Rift.

According to my short-term experience, helmets are impressive. The Oculus Rift is an excellent design, light weight and suitable for long wear. Helmet's resolution and refresh rate are high, it can bring better VR images for users, and the action is very smooth. However, due to the lack of a handheld controller, Rift could not compare with HTC Vive, and the leak was a bit disappointing. After all, the price of the helmet is not low.

Techradar: Watching a 360-degree movie is great

Oculus Rift's game is absolutely great. For some adventurers who use VR for the first time, it may be a bit uncomfortable. However, VR still brings them endless fun.

Rift looks as simple as a game console, but it does more than that. Wearing a helmet is very comfortable, but sometimes it is too tight. Oculus fully understands that Rift is not just a game helmet. We can watch 360-degree movies via Facebook, Vimeo or Twitch. It is conceivable that the Oculus Store will inevitably introduce media content in the near future.

Like the second-hand car you see, Oculus Rift posted "warning signs" everywhere. It does bring an immersive experience, but it requires the support of expensive computers. The helmet is equipped with an Xbox One controller. The reason for this arrangement is that Oculus's own controller is not yet available.

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Impulse Steam Turbine

An impulse turbine is a type of steam turbine where the rotor derives its rotational force from the impact force, or the direct push of steam on the blades.

The impulse turbine consists of a rotor mounted on a shaft that is free to rotate. Attached to the rotor are a set of curved blades. Nozzles then direct the high pressure and high temperature steam towards the blades of the turbines. The blades catch the impact force of the rapidly moving steam and rotate from this force.

The Impulse Principle

The steam at high pressure enters through a stationary nozzle of a steam turbine, as a result the pressure of the steam is decrease and an increase in steam velocity. As a result of increased steam velocity steam pass through the nozzle in the form of a high-speed jet. This high-velocity steam hit the properly shaped turbine blade, as a result, the steam flow direction is changed. The effect of this change in direction of the steam flow will produce an impulse force. This force cause the blade move, thereby the rotor will start to rotate.

The force applied to the blade is developed by causing the steam to change the direction of flow (Newton`s 2nd Law – change of momentum). The change of momentum produces the impulse force.

Impulse Turbine Working:

In the impulse turbine pressure drops and the velocity increases as the steam passes through the nozzles. When the steam passes through the moving blades the velocity drops but the pressure remains the same.

The fact that the pressure does not drop across the moving blades is the distinguishing feature of the impulse turbine. The pressure at the inlet of the moving blades is same as the pressure at the outlet of moving blades.

Impulse Steam Turbine

Shandong Qingneng Power Co., Ltd. , https://www.steamturbine.be