<s>
An	O
optical	B-General_Concept
head-mounted	I-General_Concept
display	I-General_Concept
(	O
OHMD	O
)	O
is	O
a	O
wearable	O
device	O
that	O
has	O
the	O
capability	O
of	O
reflecting	O
projected	O
images	O
as	O
well	O
as	O
allowing	O
the	O
user	O
to	O
see	O
through	O
it	O
.	O
</s>
<s>
In	O
some	O
cases	O
,	O
this	O
may	O
qualify	O
as	O
augmented	B-General_Concept
reality	I-General_Concept
(	O
AR	O
)	O
technology	O
.	O
</s>
<s>
Various	O
techniques	O
have	O
existed	O
for	O
see-through	B-Device
HMDs	O
.	O
</s>
<s>
The	O
curved	O
mirror	O
technique	O
has	O
been	O
used	O
by	O
Vuzix	B-Application
in	O
their	O
Star	O
1200	O
product	O
,	O
by	O
Olympus	O
,	O
and	O
by	O
Laster	O
Technologies	O
.	O
</s>
<s>
These	O
techniques	O
include	O
diffraction	O
optics	O
,	O
holographic	B-Algorithm
optics	I-Algorithm
,	O
polarized	O
optics	O
,	O
and	O
reflective	O
optics	O
:	O
</s>
<s>
Nokia	O
technique	O
now	O
licensed	O
to	O
Vuzix	B-Application
.	O
</s>
<s>
Holographic	O
waveguide	O
–	O
3	O
holographic	B-Algorithm
optical	I-Algorithm
elements	I-Algorithm
(	O
HOE	O
)	O
sandwiched	O
together	O
(	O
RGB	O
)	O
.	O
</s>
<s>
Developed	O
by	O
Lumus	B-General_Concept
.	O
</s>
<s>
Head-mounted	B-General_Concept
displays	I-General_Concept
are	O
not	O
designed	O
to	O
be	O
workstations	O
,	O
and	O
traditional	O
input	O
devices	O
such	O
as	O
keyboards	O
do	O
not	O
support	O
the	O
concept	O
of	O
smart	B-General_Concept
glasses	I-General_Concept
.	O
</s>
<s>
Unlike	O
the	O
Google	B-Application
Glass	I-Application
,	O
the	O
MR	O
System	O
is	O
aimed	O
for	O
professional	O
use	O
with	O
a	O
price	O
tag	O
for	O
the	O
headset	O
and	O
accompanying	O
system	O
is	O
$125	O
,	O
000	O
,	O
with	O
$	O
25,000	O
in	O
expected	O
annual	O
maintenance	O
.	O
</s>
<s>
At	O
MWC	O
2013	O
,	O
the	O
Japanese	O
company	O
Brilliant	O
Service	O
introduced	O
the	O
Viking	O
OS	O
,	O
an	O
operating	O
system	O
for	O
HMD	O
's	O
which	O
was	O
written	O
in	O
Objective-C	B-Language
and	O
relies	O
on	O
gesture	B-General_Concept
control	I-General_Concept
as	O
a	O
primary	O
form	O
of	O
input	O
.	O
</s>
<s>
It	O
includes	O
a	O
facial	O
recognition	O
system	O
and	O
was	O
demonstrated	O
on	O
a	O
revamp	O
version	O
of	O
Vuzix	B-Application
STAR	O
1200XL	O
glasses	O
( $	O
4,999	O
)	O
which	O
combined	O
a	O
generic	O
RGB	O
camera	O
and	O
a	O
PMD	O
CamBoard	O
nano	O
depth	O
camera	O
.	O
</s>
<s>
At	O
Maker	O
Faire	O
2013	O
,	O
the	O
startup	O
company	O
Technical	B-General_Concept
Illusions	I-General_Concept
unveiled	O
castAR	B-General_Concept
augmented	B-General_Concept
reality	I-General_Concept
glasses	I-General_Concept
which	O
are	O
well	O
equipped	O
for	O
an	O
AR	O
experience	O
:	O
infrared	O
LEDs	O
on	O
the	O
surface	O
detect	O
the	O
motion	O
of	O
an	O
interactive	O
infrared	O
wand	O
,	O
and	O
a	O
set	O
of	O
coils	O
at	O
its	O
base	O
are	O
used	O
to	O
detect	O
RFID	O
chip	O
loaded	O
objects	O
placed	O
on	O
top	O
of	O
it	O
;	O
it	O
uses	O
dual	O
projectors	O
at	O
a	O
framerate	O
of	O
120Hz	O
and	O
a	O
retroreflective	O
screen	O
providing	O
a	O
3D	O
image	O
that	O
can	O
be	O
seen	O
from	O
all	O
directions	O
by	O
the	O
user	O
;	O
a	O
camera	O
sitting	O
on	O
top	O
of	O
the	O
prototype	O
glasses	O
is	O
incorporated	O
for	O
position	O
detection	O
,	O
thus	O
the	O
virtual	O
image	O
changes	O
accordingly	O
as	O
a	O
user	O
walks	O
around	O
the	O
CastAR	B-General_Concept
surface	O
.	O
</s>
<s>
Intel	O
announces	O
Vaunt	O
,	O
a	O
set	O
of	O
smart	B-General_Concept
glasses	I-General_Concept
that	O
are	O
designed	O
to	O
appear	O
like	O
conventional	O
glasses	O
and	O
are	O
display-only	O
,	O
using	O
retinal	B-General_Concept
projection	I-General_Concept
.	O
</s>
<s>
Analytics	O
company	O
IHS	O
has	O
estimated	O
that	O
the	O
shipments	O
of	O
smart	B-General_Concept
glasses	I-General_Concept
may	O
rise	O
from	O
just	O
50,000	O
units	O
in	O
2012	O
to	O
as	O
high	O
as	O
6.6	O
million	O
units	O
in	O
2016	O
.	O
</s>
<s>
According	O
to	O
a	O
survey	O
of	O
more	O
than	O
4,600	O
U.S.	O
adults	O
conducted	O
by	O
Forrester	O
Research	O
,	O
around	O
12	O
percent	O
of	O
respondents	O
are	O
willing	O
to	O
wear	O
Google	B-Application
Glass	I-Application
or	O
other	O
similar	O
device	O
if	O
it	O
offers	O
a	O
service	O
that	O
piques	O
their	O
interest	O
.	O
</s>
<s>
Business	O
Insider	O
's	O
BI	O
Intelligence	O
expects	O
an	O
annual	O
sales	O
of	O
21	O
million	O
Google	B-Application
Glass	I-Application
units	O
by	O
2018	O
.	O
</s>
<s>
According	O
to	O
reliable	O
reports	O
,	O
Samsung	O
and	O
Microsoft	O
are	O
expected	O
to	O
develop	O
their	O
own	O
version	O
of	O
Google	B-Application
Glass	I-Application
within	O
six	O
months	O
with	O
a	O
price	O
range	O
of	O
$200	O
to	O
$500	O
.	O
</s>
<s>
Samsung	O
has	O
reportedly	O
bought	O
lenses	O
from	O
Lumus	B-General_Concept
,	O
a	O
company	O
based	O
in	O
Israel	O
.	O
</s>
<s>
Another	O
source	O
says	O
Microsoft	O
is	O
negotiating	O
with	O
Vuzix	B-Application
.	O
</s>
<s>
In	O
July	O
2013	O
,	O
APX	O
Labs	O
founder	O
and	O
CEO	O
Brian	O
Ballard	O
stated	O
that	O
he	O
knows	O
of	O
25-30	O
hardware	O
companies	O
who	O
are	O
working	O
on	O
their	O
own	O
versions	O
of	O
smart	B-General_Concept
glasses	I-General_Concept
,	O
some	O
of	O
which	O
APX	O
is	O
working	O
with	O
.	O
</s>
