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BRIEF
INSTROUDUCTION OF THE COMPANY
In
1984,Liumen International was set up in USA with the
English name Liusky International and Megtronic as its
registered trademark. It started to import fittings,
cables, etc. of computers from Taiwan to USA in the
early days. It was the first company in USA, which sold
computer products made in Taiwan. Until1991, it had
already had 9 branches with a total of 600 staff members
in America.
In the
issues of 1990 and 1991,the American magazine
“FORTUNE?appraised Liusky International at No.9and
No.7 among the ten computer traders which were most well
received in the whole America. In August 1992, the
stocks of Liusky International appeared on the stock
market in USA. In the same year, the USA magazine ?
FORBES ?appraised Liusky International at No.24 of
the most valuable 200 middle and small enterprises in
U.S.A. In 1995, the total sales of Liusky International
were over US$500million.In1997,Liusky International
established its new branch in Mainland China and
registered its trademark as 美创in
Chinese and Megtron in English .Its head office is in
Shanghai.
After
entering the market of Mainland China, Liu Men
International has successfully brought the essence of
its trade experience established in U.S.A to China
market. Liu Men was the first to carry out the principle
of “excellent service before, during and after
selling?and the slogan: Sold products can be changed
whenever they are in condition or out of condition. Its
guiding rule of high quality, low price and excellent
service with service as the precursor won widespread
acclaim from buyers.
In 1999,
LiuMen International became the only managing agent of
Samsung for selling CD-ROM and HD (Hard disk) in
Mainland China. In the same year, it promoted the sales
of a series of Megtron Main Board. In 2000, it promoted
Megtron Super CD-ROM to the market. Meanwhile, the
concept of “No Risk ”was first presented in Mainland
China.
The
products of Megtron series became fashionable for a time
in the computer trade of Mainland China. Besides Megtron
CD-ROM and Megtron Main Board which are well known to
customers, Megtron HD, Megtron Sound Box and Megtron
Sound Blaster Card have also given them a very deep
impression.
LiuMen
International has recently founded its investment
foundation and invested in ZhongGuan Cun on-line(zol.com.cn)
Together with its subordinated factory –Commell
Systems Corp in Taiwan, Liu Men is researching and
developing new varieties of Megtron series.
In
2002, through the research, development and promotion of
Megtron metal screens, LiuMen International successfully
became a company specially investing in researching,
developing and promoting the products of high and new
science and technology. Besides, it will work together
closely with those of the same trade to promote the
Megtron New products to the market rapidly and serve the
customers well.
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球面型金属银幕 |
柱面型金属银幕 |
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平面型金属银幕 |
拼接型大尺寸金属银幕 |
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电动中控金属软幕 |
手动自锁金属软幕 |
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Soft
screen series
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Specification
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Dimension
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Roller size
(Hand control)
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Roller
size
(Electric
control)
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72
inch
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1500x1080mm
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1520mm
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1670mm
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84
inch
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1740x1620mm
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1810mm
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1910mm
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100
inch
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2080x1500mm
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2150mm
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2250mm
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120
inch
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2500x1800mm
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2570mm
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2670mm
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150
inch
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3100x2250mm
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3170mm
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3220mm
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The
specialty of Megtron’s soft screen
1 High brightness plus, great view angle
The average
brightness plus of Megtron’s soft screen is over 4, the view angle
is not less than 80? while the white wall’s brightness plus is
0.7, the matte white screen is 0.9, general glass beaded screen’s
brightness plus is about 2 and the view angle is only 30?
The result of the
expert’s test: when the projector of 1500ANSI projects on the
Megtron’s soft screen, the effect equals to the projector of 2500
to 3000 ANSI projects on the general glass beaded screen.
2 Great color revert
The base material of
Megtron soft screen adopted special imported high metal reflecting
layer, its theory of reflecting and effect of glistening are
entirely different from those of the glass beaded screens. The
Megtron soft screen has not got the refractive index, it does not
destroy the side-glance light, so the whole color revert which the
projector chased will be realized. While the glass beaded screen
with the light from the projector projects two times on the glass
beaded, the side-glance light has been destroyed, which makes the
color serious distortion, and leads the projector’s efforts of
chasing the light revert being wasted. So the color revert of
Megtron’s screen is better than that of any other screen.
3 Fit for the common light environment
With
the continuous improvement of the projector’s brightness,
projecting in the common light environment is necessary and
possible, but glass beaded screen fits for the darkness environment,
if in the common light environment, the coat of glass beaded will
reflect the lamp light and nature light to the audience’s eyes,
there appears the “fog white background ? This background
disturbs the pictures of projector seriously, which brings about the
projector’s color very tint and white, so glass beaded screen can
not realize the common environment projection. While the Megtron
soft screen adopted the metal
reflecting layer and the special theory of
reflection, it is not easy to be disturbed by other lights, in the
common light environment, audiences only see the pictures of the
projector; so the Megtron soft screen can keep the fresh colors in
the common light environment, in addition to its high brightness
plus, it is very fit for the projection of common light
environments.
4
Easy to be installed, used, and with long using life
In
order to satisfy our customers, especially the customers in the
education field who need the easy installing and moving, Megtron soft screen
adopted electrical central control design; the oily axletree motor
in the roller of screen has been tested over ten thousands times, it
is quiet and durable; in normal condition, the base of screen
adopting special metal reflecting layer, will not fall off nor
change into yellow color. The high brightness plus will never be
reduced.
5 Green and Environment Protection
Megtron
soft screen adopted green and environment protection material; it
has no peculiar smell, nor does any harm to the human body.
6 Prevent static and easy to be cleaned
There is
protective coating adhered to prevent static on the metal reflecting
layer of Megtron soft screen, which does not only protect the
reflecting metal against oxidation, but also prevent static. Even if
stained with some dust, it can be cleaned with the soft cloth.
7 Beautiful and decent
The roller of the Megtron soft screen
adopted International popular design, it is beautiful and decent.
The metal screens abroad have not black borders, so comparing with
them; Megtron soft screen is more professional.
Instruction
of soft screen series: (electric
control type)
Megtron soft screen series
(electric control type) adopt advanced micro chipset, to rise up and
fall down automatically by software control. Megtron soft screen
series is convenient to operate, accurate to control and easy to
adjust. And its performance is reliable.
How to use:
Turn on the power, and then
the red LED indicator light will be bright
Press the switch to
?/span>一?
The screen will rise, when the screen touches the top limit level,
it will automatically stop
Press the switch to
?/span>二?
: The screen will fall, when the screen touches the bottom limit
level, it will automatically stop
Press the switch to
“o? the screen will stop at once
How to adjust:
The adjusting switch is
situated in a hole (the new model will be changed to the green LED
indicator light) on the roller box and can be pressed with ball pen
point or some thing like it.
Adjust the top limit level:
press the switch to ?/span>一?then press
the switch of adjustment ,the red LED indicator light will be
shining, at the same time, the screen begins to rise till the whole
screen enters into the roller box; Press the switch again, the
screen will stop and the red LED indicator light will be blackout.
Adjust the bottom limit
level: press the switch
to ?/span>二?then press
the adjusting switch ,the red LED indicator light will be shining,
at the same time, the screen begins to fall till the whole screen
falls to the bottom limit level; Press the switch again, the screen
will stop and the red LED indicator light will be blackout.
Attention: you must adjust
the top limit level first, and if you only adjust the top limit
level without adjusting the bottom limit level, the screen will not
move. Besides, if you only adjust the bottom limit level, the top
limit level will be changed to the starting point of adjustment.
How to deal with trouble:
1.controlling without
reaction.
Check the following items:
Whether the power is on or
the red LED indicator light is shining.
Whether the line is ok
Whether line is loose or
break off,
Whether the power switch is
easy use
2.The position of rise or
fall is not correct
Whether it is prevented by
outside force
Attention: contact us
directly if you cannot deal with the trouble
Please cut off power if the
screen is not used for a long time
Connect the central
controller
Snip the line at random
point of line to connect the central controller
Black line is zero line, red
line is uplink line, and green line is downlink line
Megtron screen quality card
Thank you for purchasing
Megtron screen series products, please keep well this quality card.
If there are any quality problems with your screen, which, being
confirmed by us, measures up to our free charge service statutes,
our company will offer you free change or maintenance services.
The information of the
fixing products: ________________________________________________
The type and specification:
_________________________________________________________
The purchasing day
(according to the date of
invoice)______________________________________
The sale unit (with a seal
affixed)______________________________________________________
Customer’s
name/unit______________________________________________________________
Tel:
________________________________________________Fax:____________________________
Address:
___________________________________________
Postcode:____________________________
The date of sending to fix:
__________________________________________________________
The phenomenon of trouble:
________________________________________________________
The above contents should be
correct, written in order and clearly. If the contents aren’t
consistent with the fixing products or not written in order and
clearly, our company will refuse to offer service.
Period of free charge
service: In general a year (according to our label of quality and
warehouse record)
The following items are out
of free charge service:
Fixed, disassembled,
changed, or it elements added without the agreement of our company
Damaged in accident, or used
incorrectly
Destroyed during transport
or by the other side
Destroyed or broken down not
according to the method or environment explained in our instruction
booklet
LiuMen International co.,
Ltd/Beijing branch Tian KunTong Company
Telephone:0086-010-51721906/51721907/51721908
Fax: 0086-010-51721908 Ext
804
Address:
HaiKai DaSha Room 7103
Haidian south road No15
Haidian district
Beijing, P.R.C
Postcode: 100080
Web: http://www.liumen.com
Use Megtron screen to
inaugurate beautiful eyeshot
With the continuous
improvement of display technology, people increase to pursue the
screen with greatest size of eyeshot. From initial 9 inches to
today’s 47 inches, the sizes of traditional CRT & DISPLAY have
got difficulty in development. The sizes of LCD & PDA & REAR
PROJECTOR etc appearing at the same time are only 60 to 70 inches.
In order to pursue greater size of eyeshot, people pay attention to
the FRONT PROJECTOR SCREEN which size can be enlarged to 300 inches.
Following the wash out of
the CRT projector, the LCD projector widespread and the DLP
projector emerged, the volume of projector becomes smaller and
smaller; the weight of the projector becomes lighter and lighter,
debased from the original over hundred kilograms to nor more than1.3
kilograms, it is becoming more and more convenient for taking; the
quality of picture and definition become higher and higher, the
contrast ratio has been changed from the original 200:1 to present
1600:1,resolution has been improved to 2500*2000, color becomes even
and acutance , higher;
it is very convenient to control .The price has been decreased from
a hundred thousand Yuan every 1000ANSI to no more than twenty
thousand Yuan every 1500ANSI; the function has been changed from the
original only display to present Multi Data Input, PIP, NO Aperture
Original Signal Switch etc. The lamp of projector has got a long
life for use, the picture brightness has been changed from original
several hundred ANSI to present several thousand or even over ten
thousand ANSI. The BARCO Company issued and demonstrated a three
pieces of DLP technology at LASVEGAS meeting center in April 2003,
the picture brightness of projector was as high as 10,000ANSI.So
this shows the brightness is the most important object that the
projector wants to pursue.
The substance carrier of the
projector’s picture ---projector’s screen also makes the
brightness plus as its emphatically pursued object. In the early
period, projector with several hundred ANSI can only demo pictures
in the darkness environment. Compared with the Matte White screen,
the Glass Beaded screen’s brightness plus is satisfied enough, so
the Glass Beaded screen with nearly brightness plus (G=2) washed out
the Matte White screen with brightness plus (G<1). With the ANSI
improved continuously, project in the bright environment is
necessary and possible. But the Glass Beaded screen was designed for
the darkness environment. In the bright environment, the Glass
Beaded screen will make serious white fog background emerge, this
kind of serious white fog background nearly destroys the effort of
projector to pursue fresh picture. Thus the Megtron Super Wonder-Lite
screen emerged, it can be used in the bright environment without any
white fog background.
The English name of the
screen is “Super Wonder---Lite?meaning brightness as a kind of
super and wonder mineral. From its name, people can guess the
special effect of this kind of projector screen. Besides the super
long using life and dirty-proof ’s characters, Megtron Super
Wonder-Lite screen ’s super high brightness (globular type
screen’s brightness plus can reach 7 to 8) and excellent colorful
picture revert (without any white fog background) have given
customers deep impression. Megtron Super Wonder-Lite screen (hard
model) is fit for the special fixed environment that needn’t move.
The Megtron soft screen is
made from many metal matters. It’s a high technology product with
several subjects of science such as, Optics, Chemistry,
Metallography, Mechanics, Physics, Liquid Interface, Multilayer
printing and Coat, Macromolecule. The Megtron soft screen’s view
angle and brightness plus are not lower than those of plane type of
hard model screen. Herein it is convenient for fixing, using, and
carrying, it is fit to be used in the bright classrooms, meeting
rooms and all kinds of environments.
With continuous improvement,
extension and popularization, Megtron screen will inaugurate
beautiful eyeshot for customers.
How
to avoid the projection screen’s white fog background
With the quick development
of the projection trade and the wide use of the projectors in the
army, government units, universities, large public locations, large
amusement trades, top grade family cinemas and all kinds of fields,
people have been more and more attracted by the projector’s
varieties of functions and it convenience of use, at the same time,
tempted by the power of the supper- sized screens
However, more and more
people regret to see that the picture color of present projector is
not as fresh as that of the TV or the PDA, there is always a layer
of white fog on the projector’s screen, which is described in
professional word as the “white fog background ?
1.
What is the cause of the “white fog background ?o:p>
The
LUMEN of projectors in the early period is very low; any light
sources are not allowed to exist when several hundred LUMEN’S
projector projects on the white matte screen. You have to turn off
the light and close the curtain, even to use the dark floor board.
The brightness and color in such full black environment still do not
make people satisfied.
Following the improvement of the projector’s LUMEN,
Glass beaded screen with brightness plus 2 has taken the place of
the Matte white screen of no brightness plus, people become more and
more satisfied with the picture which is projected in the darkness
environment, soon afterwards, people hope and need to see such
satisfied picture in lamp light or other “normal light?
environments.
But people
are very surprised to find that Glass beaded screen is exceptional
white when light is on or curtain is open. To project in “normal
light?environment, however high the projector’s LUMEN is, the
pictures projected on the Glass beaded screen all have the “white
fog background? which makes the colors pale, white and unable to
revert. Therefore, it can bee seen that the cause of the
“white fog background?is that some other rays named
“disordered light?besides projector’s are projected on the
Glass beaded screen.
2、
How to avoid the “white fog background?/span>
The
“white fog background?affects the color reversion of projector
picture seriously. It nearly makes all efforts of pursuing the vivid
color wasted. The simplest way of solving this problem is to get rid
of all disordered lights and to see the picture in full dark
room---this way not only makes the odd circle of ?projection in
darkness projector& meeting in darkness?come back, but also
hinders the development of projectors. Moreover, it makes the
continuing improvement of projector LUMEN meaningless. Therefore,
people keep on finding other ways of solution.
The
emergence of Megtron screen let people see the picture without
“white fog background ?in “normal light?environment, its
picture quality can compare with the PDA’s. In fact, the target of
research and development of Megtron screen is to realize “normal
light projection? Compared with the Glass beaded screen, Megtron
screen has the special character, that is, high brightness, good
color reversion,no white fog background, fit for the projection
in normal light.
The theory
of reflection of Megtron screen is the same as that of the Glass
beaded screen both are ‘diffuse refection? but the effect of
reflection is great different (reference << The reflection
theory of Megtron’s screen>> and <<The character of
the Megtron’s soft screen>>). The practice proves that:
using the Megtron screen is the best way to get rid of the white fog
background
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