The Third Eye is a transparent display
that projects data in front of viewer eye without distracting the actual view
of the user. It projects an image just like head-up display also says Smart
The Third Eye display system projects an
image directly onto the human retina with low-energy lasers or LCDs. It can
give the user ‘ the illusion of viewing a typical screen-sized display hovering
in the air several feet away. In principle the technology can provide
full-color, high resolution dynamic displays. It is highly efficient with
respect to power consumption, requiring far less power.
One of the main tasks in technical
industry is observation of various parameters which includes the use of analog
or digital measuring devices. Continuous monitoring while working on a machine
can sometimes create problem for the engineer or technician. He/she has to
continuously change his/her
focus of vision from the machine to the display of the measuring instrument. If
we are able to integrate it with the measuring instrument then it will create a
safe and easy working environment for the engineer or the technician and avoid
The main idea behind such
kind of device would be that it will take data from the instrument and that
data will be displayed on the screen.
This paper describes
the function and implementation of Third Eye device.
KEYWORDS: head-up display, transparent display, retina,
semiconductor laser, OLED, arduino, bluetooth, optics,
From a long
time computer monitor has been the window into the digital universe. The image
in the form of light is projected onto the back of the eyeball i.e. the retina.
The retina then converts the light signals, these then travel through optic
nerve to the brain.
way to would be point the image directly
onto the retina eliminating that bulky, power consuming monitor. For this we
can use LEDs of special type or miniature lasers (semiconductor based), one
device can be used for the three key colors (red, yellow, and blue) and thereafter
scan the light of those LEDs on the retina. By mixing these 3 primary colors we could
create the whole spectrum of human vision. This can be the effective way to obtain
an image into anyone’s brain for obtaining the viewing situations.
the light only to one of your retinas, images might be overlaid on person’s
view of real objects and generating an animated, X-ray-like preview of some
object or innards of that object, such as a car’s machinery, human body etc. On the other hand, if little
bit differ images were projected into each eye, it may generate intense 3D sights
consisting clean, jewel-like spectral colors. Observers could be observed an intensified
sense of realistic image that LCD goggles may not provide, as LED- or LASER based system might be
dynamically refocuses to simulate nearby and far objects with absolute realism.
significance of this method is that there is very less wastage might be negligible amount of
photons therefore it would be superbly matched to the low-power necessities of
mobile devices. Approximately hundreds of times less power may consume by lasers
or LED’s as comparison to small LCD screens of mobile phone or notebooks etc.
Now consider a
cell phone or a PDA with a small screen, through stimulating your retina when
peered inside it, could produce an image rich in color with its detail. The
image would give an impression to your brain as wide as brightly stricken on to
the display screen 65cm away , which can be reconfigured speedily from , say ,
a traditional boxy 4:3 format to the widescreen 16:9 format.
of such systems, known as scanned-beam displays, are just now going to hit the
The objective of the work in this paper is to build a small
wearable and compatible head up display using a small OLED combining an
Arduino, a Bluetooth module, battery with some concept of optics.
The received data from Bluetooth to any other
Bluetooth system is displayed, on the OLED screen. It’s then reflected over the
mirror which is fixed in front of the screen, then the reflected light goes
through the lens and you can see the picture in the little transparent acrylic
glass which is placed in front of the user eye.
Display options will vary and customizable. It depends on the
application that where we are using it.
Many people use the mobile phone while driving motorcycles for
calling, navigation or some other purpose. This may result in accidents. This problem can be reduced by using the head up display in the
OF THE DEVICE
It contains three primary components:
Projection unit which consist of a plane mirror, a convex lens and an OLED.
Plane mirror is placed in front of the OLED, which is inclined at some angle
and the plane mirror is at the focus of the convex lens.
Combiner is an angled flat piece of transparent glass also known as beam
splitter located directly in front of the viewer eye. The glass must be more
reflective than the transmissive. For better and clear image, the ratio between
the reflection and the transmission through the glass is 7:3.
Computer i.e. microcontroller that provides the interface between the
projection unit and the systems/data to be displayed. In this device, we are
using arduino as computer that connects the data system with the OLED display.
It acts as the brain of the device.
DIAGRAM OF THE THIRD EYE
Third Eye basically consists of a micro-controller that can be of arduino
family or atmega16 or some other family. Here, we are using arduino. It is
interfaced with OLED display, power source and bluetooth. The display projects
an image on the mirror which is placed at some angle in front of the display.
The reflected image passes through the convex lens and finally the refracted
image is shown on the transparent display.
5. WORKING OF THE THIRD EYE
The process basically involves the phenomenon of optics which is
triggered using embedded system.
The working of HUD divided into three sections:
Electronics: In electronics
configuration, we are using arduino atmega 328 microcontroller, Bluetooth,
power supply source i.e. rechargeable battery and the charging circuit and
sensors. The data is taken by the sensor in analog form, processed by the
microcontroller and send to the display unit. The display option is
customizable. The collected information stored in the memory for further use or
when it is needed.
Light Source: The light
source involves OLED for display, the data pass through a analog to digital
converter that controls the light source.
Optics: Optics section
includes assembly of convex lens, plane mirror and the combiner. The plane
mirror is placed at an angle of around 45° in front of the OLED display. It reflects the image of the OLED
display. The reflected image is laterally inverted. It is then focused on the
convex lens which is placed at the focus. It makes the diverging ray of the mirror
into the parallel ray and finally the required image is displayed on the
transparent glass and finally we get the actual data in front of the viewer.
6. PROTOTYPE OF
Electronic Circuit on breadboard
Data on Combiner Mirror
7. CHARACTERISTICS OF THE THIRD EYE
It has in common the following characteristics:
display element is largely transparent.
information is projected with its focus at infinity.
must be compact and lightweight
8. LEARNING ASSOCIATED FOR YOUNG LEARNERS
This project will teach young minds about the basic idea of
embedded system and implementing them in real life problems moreover they will
learn about the phenomenon of optics.
OF THE THIRD EYE
can be wearable just like spectacles.
small in size and compatible.
efficient in view of power consumption, requiring far less power than LCD
screens. It uses about a microwatt of power.
a sharp, highly contrast and clear image irrespective of external lighting
requires a fraction of the hardware of conventional display devices, allowing
for lighter and more elegant devices.
10. HUD MARKET
The major benefit of this project is that
it can help to avoid
Some more benefits are:
Military aircraft applications include weapons
status and sensor data such as target destination, range, line of sight.
Automobiles usually offer speedometer, tachometer,
and navigation system display. Night vision information will also be displayed.
It can also be used in motorcycle helmets.
Medical operations includes patient health status such
as heart beat rate, blood pressure etc.
Off the bike, your smart phone gives you access to maps, directions and point
of interest which will solve the problems for daily commuters.
It lets you avoid bad weather.
See all the data that is important to you without taking your eyes off the road which will
reduce the chances of accidents.
calling system can be accessed while driving.
Power consumption is one of the major challenges.
It should be compact and light weight so that it is easy to handle.
The optical design will be the most difficult issue
i.e. the arrangement of lens mirror and combiner.
It is used in various fields for
Displaying information to workers on site locations such
as power stations, airports and events
These displays are discreet and easy to use and are being
used in the field by engineers, security and police forces.
13. FUTURE IMPROVEMENTS
Voice Command Functionality
Reduction of Cost
with most hi-tech electronics, head-up displays are set to become smaller and
the near future, it will be available with Wi-Fi connectivity, allowing users
to browse the web and check their email on the move.
will also be devices that will create full color images that look bigger than a
cinema screen, from a tiny head-mounted or handheld device. This will open up
applications such as augmented vision and augmented reality.
dashboard information could be displayed by such a display, allowing real-time
information on the car, traffic and directions, to be superimposed anywhere in
the driver’s field of view.
will take on a new leash of life with augmented reality and GPS technology.
will be able to see a map of their current location displayed right on top of
the real thing. This will aid navigation in cities and the countryside,
allowing street names to appear on every road and virtual sign-posts to lead
you to your destination.
information such as the nearest police or tube station could be overlayed onto
your view along with directions to the nearest cash point or taxi rank.
• It is smaller and lighter.
• Users will be able to see a map of their
current location displayed right on top of the real thing.
• This will aid navigation in cities and
countryside, allowing street names to appear on every road and virtual
sign-posts to lead you to your destination.
In the near future,
head-up displays will be available with Wi-Fi and Bluetooth connectivity,
allowing users to surf the web and check their email on the move.