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Virtual Reality Glasses

What Are Virtual Reality Glasses And Headsets? + How To Work And How To Use

What Is A Virtual Reality Headset? What Are Virtual Reality Glasses? These Are Two Questions That Most People Face When Confronted With This Device And Would Like To Know More About The Performance And Use Of Virtual Reality Glasses Than Others. 

Virtual Reality Glasses, If you are one of these people, in this article from Tech News Technology News, we have tried to give you the best possible information to the users and in addition to getting acquainted with the function and efficiency of these glasses, with the way and how to use this device Get to know each other.

Today, both in the world and in Iran, virtual reality glasses have become more popular. This promises that more advanced versions of current virtual reality headsets will be widely used in the coming months and years, and the situation will change.

That at least 1 out of every 2 phone users is a user of these headsets. It is very likely that you have used these glasses once or at least once or at least once you have heard the name.

What is Virtual Reality?

Before discussing the virtual reality headset and what it is, it is not bad to first look at virtual reality. Virtual Reality, as its name implies, means that reality is virtual. But what exactly does it mean?

VR means to simulate a space for the user by the computer and related items, a space that after a short time the user thinks is real if this space is just a virtual space.

What are Virtual Reality Headset Glasses?

The virtual reality headset is based entirely on VR technology. With these headsets, the user enters another world, and the virtual space is displayed to the user as a real space, and the user, with his movements, as a first-person, can be present and move in different spaces, just like the physical world and Real.

Virtual reality glasses allow you to use Virtual Reality as a movie, game, or a pre-recorded 360-degree position.

Today, these glasses are mainly smartphone-based headsets. They are glasses that hold smartphones and create a real virtual space experience through special applications.

The main purpose of virtual reality headsets is to provide real situations for the user so that the user forgets that he has a headset in his head and lives in a space other than what he sees.

How a virtual reality headset works

With the use of a virtual reality headset, as mentioned above, the user enters another world that seems completely real to him and suddenly forgets that he has a headset in his head, which is not the real world facing him.

It is a real-world but a simulated world. But how does this process work? What happens when the user completely believes that the space he sees is a real space? To answer this question, we need to get into the structure of VR headsets.

Virtual Reality glasses, also known as VR for short, such as the Oculus Rift and PlayStation VR, are often referred to as HMDs (Head Mounted Display).

By placing their screen in front of your eyes, you will experience a 3D environment that, unlike 3D TV images, has no boundaries, just like the real world.

The videos or images you see on a virtual reality headset are not from the headset itself but from the device that connects to the headset.

For example, in PlayStation VR virtual reality glasses, images are taken from the game console, the HTC VIVE headset from a computer, and the Samsung Gear VR headset from a smartphone.

To learn how to use a virtual reality headset, we must say that these devices either use two feeds for one screen or two LCD screens for each eye. In addition, they have lenses that are placed between the user’s eyes and the pixels, which is why they are sometimes referred to as “virtual reality glasses.”

It should be noted that in some of these headsets, the distance between the lenses and the user’s eyes is adjustable.

These lenses transform the image for each eye and deliver three-dimensional images to the user using two two-dimensional images and a kind of difference in vision between each of the two eyes.

To get a general idea of ​​the story, try putting a specific object in front of your eyes and then closing one of your eyes very quickly and alternately. You will see how the object will constantly move from side to side and from side to side.

One way VR headsets can increase immersion in the display world is to increase the field of view. That is, they present the image they present to the user in an extensive format.

 Most of these headsets have a viewing angle of 100 to 110 degrees, which is enough for this method.

For this reason, it seems unnecessary to use a 360-degree screen, which is also expensive.

In addition, the headset needs to have a minimum frame rate of around 60 frames per second for the image the user sees to look more convincing.

Of course, current virtual reality headsets have higher frame rates than this minimum. For example, Oculus has 90 frames per second, and PlayStation VR about 120 frames per second.

Another point about how a virtual reality headset works are head tracking. Head tracking means that the image in front of the user’s eyes changes according to the angle of the user’s head, whether up or down and left and right.

A 6oDf or 6 degrees of freedom detects and calculates head movements on the X, Y, and Z axes for head tracking. In addition, there are several components used in the head tracking system, including gyroscope, accelerometer, and magnetometer.

It takes a small amount of latency for head tracking technology to work well. 

A small amount of delay is 50 milliseconds or less so that the headset user can shake the image to change the image. If the time interval is longer than this, the user will feel this delay, which will not be positive.

Another thing to note about using a virtual reality headset is that two-dimensional and three-dimensional sound is generally used to enhance the user experience of the virtual reality experience, which is heard through the headphones in each virtual reality headset. The user arrives.

Of course, what has been said is actually a not-so-advanced process in virtual reality headsets. VR headsets in 2018 have technologies such as eye-tracking that require another opportunity to explain.

 Virtual Reality Glasses

Virtual reality headset application

Virtual Tour: VR headsets have several uses. In addition to being used to create entertainment and happiness, they are also used in other fields such as science, education, medicine, psychotherapy, advertising, etc.

For example, in some properties, virtual reality glasses can show the house to the applicant.

This means that the applicant for buying or renting a house, without the need to be present at home, can put on a virtual reality headset, explore the desired house, and decide whether to buy. Rent or not rent the desired house.

Fear treatment:

Or that this gadget is used, for example, in the treatment of phobias. Phobia means that the patient is afraid of certain conditions and situations. This fear is not, of course, a normal fear but a severe fear.

But with the use of a virtual reality headset, the patient is afraid of being shown to them virtually. The patient can repeatedly experience those conditions by ensuring that these conditions are not real so that their morbid fears and anxieties gradually subside. Get rid of those conditions.

Car performance simulation:

One of the applications of virtual reality headsets is the automotive industry. For example, one of the car companies, Ford, has allowed its employees to use these glasses to communicate with the inside and outside of the car before the car enters the market and is fully produced. To establish and fix if there is a problem in it.

Crime detection:

Or, for example, virtual reality glasses can be used to prove the guilt of a criminal in court. In fact, reconstructing a crime scene with real 3D images can have a much better effect on proving the guilt of a criminal, which is why researchers at the University of Zurich are working on these headsets and using them as a suitable tool for use in the courts. Present.

Virtual Reality Headset Buying Guide

Most of the virtual reality headsets currently being produced and offered and are very popular are mobile-based headsets. This means that these headsets do not have a dedicated display, but smartphones must be connected to them and used.

The most famous and popular of these headsets are:
  • Samsung Gear VR
  • BOBO VR Z5
  • BOBO VR Z4
  • Shinecon 4 VR
  • VR Box 2

But in general, to buy virtual reality glasses, you should pay attention to a few things. One is that the headset should not be too heavy, as you may have it on your head for hours.

In line with this, a headset may be placed on the head for hours, so the second point can be considered the comfort of the headset buttons and pads. It would help if you looked for a headset with soft pads compatible with the scalp and face.

Thirdly, it is better than the headset you want can adjust the distance from the eye to the lens.

Some headsets also have the ability to adjust the lenses from each other, which can also be one of the important points for buying a virtual reality headset.

Also, pay attention to the viewing angle. Virtual reality glasses should not have a viewing angle of fewer than 100 degrees, although most headsets have a viewing angle of more than 100 degrees.

Of course, sometimes, the viewing angle announced by the manufacturer is more than the actual viewing angle of the headset. It should be noted that the viewing angle of the headset also depends on the size of the screen of the phone used in it.

Finally, before buying a virtual reality headset, make sure that the headset is compatible with your phone model.

Before buying, you can read the headset information on the manufacturer’s site or other sites. After making sure that the headset is compatible with your phone, buy the Virtual Reality Headset or the virtual reality headset. Click the button below to read the specialized article on buying virtual reality glasses and headsets:

The Last Word

In this article, we tried to introduce virtual reality glasses and how they work. It is hoped that by reading this article, your knowledge and information about VR headsets will be added a little, and then you will seek more in-depth and specialized studies in the field of virtual reality headsets.

Finally, according to the country’s current situation, the price of glasses and virtual reality headsets starts from 100 thousand tomans and can even reach several million tomans. Still, they are mainly in the range of 200 to 300 thousand tomans.