Filter
Due to constant viewing of the computer monitor, several
eye troubles may begin. To avoid these, reduction of the brightness
is one way while the other is to use filters. Filters, as
the name indicates, filters the light coming out of the monitor
acting just like sunglasses. There are anti-glare filters
available which are optically coated glass filters that reduce
glare, radiation, improve viewing ability, and help relieve
computer-related eyestrain. They are affixed on top of the
monitor screen. However, in laptops, fixing the glass filter
is a problem. Hence when working with laptop notebooks, reducing
the brightness is a more practical option. To overcome this
problem, one of the latest notebook accessories to hit the
notebook market is the 3M-multi-louvre privacy filter.
What is a privacy filter?
For increased privacy while working, and to avoid others
peeking over your shoulder, laptop privacy filters are available.
A privacy filter is a notebook computer accessory that is
attached on the monitor of the notebook computer. It makes
viewing possible only if someone is viewing the monitor directly
from the front. The screen becomes progressively darker as
one moves sideways. The privacy filter is a dark sheet of
plastic with one side glossy and with the other side having
a matte finish. The glossy side is reflective while the matte
finish side has an anti-reflective look. You can choose any
finish that you are comfortable with. The filter cuts off
some of the light passing through it and so the screen looks
darker than usual. With a reasonably bright screen, the filter-fitted
display is readable. Even after considerable reduction of
the brightness, the readability is satisfactory. The filter
is attached to the laptop screen with transparent plastic
self-adhesives. The privacy is maintained on the horizontal
level. Shuffle sideways and the screen starts to darken until
it becomes completely black before your viewing angle is 45
degrees.
Does the privacy filter work?
The filter makes a difference on the horizontal axis and
protects your data from side-glances. However, if someone
is standing behind you, then it is a bit hard to read but
is still readable. These privacy filters do not cover vertical
viewing angles. 3Ms mirco-louvre technology works on the premise
that if anyone is standing in front of the screen, then they
are probably allowed to do so and therefore are allowed to
view what is displayed on the screen. Persons sitting on the
sides, whether in a plane or a train, are more prone to glance
on the laptop screen, and it is for these persons, 3M has
designed this privacy filter. Besides privacy, an added benefit
is that these 3M filters are easier to clean than the LCD/TFT
screens. They can stand vigorous dusting and cleaning.
Features of a privacy filter
- Advance 3M-micro louvre technology makes on-screen data
visible only to persons directly in front of the monitor;
passerby sees a dark blank screen
- Attaches and detaches easily – can remain in place
even when the computer is closed
- Helps prevent scratches or damage to LCD screens
- Improves contrast and privacy without blurring or image
distortion
- Lifetime warranty
- Offers privacy protection with 3M micro-louver technology
- Sizes to fit most notebook screens
- Prices range from $60 to $170 depending upon size and
brand.
- Privacy filters are available for monitors of sizes 12.1",
13.3", 14.1", 15.0" 17.0" 18.1"
19.0".
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