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BARCO ——————————————————— 2

————————————— Projection Systems

QGD(2-2.8:1) Lens R9829790 

(Continued)

Lens Formula

To calculate the distance (range) between the projector frontside and the screen (PD)

for a given screen width (SW), use the following formula for

BarcoGraphics 6300 :

Metric system (PD and SW in meter) :

PD

min

 = 1.935 x SW + 0.476 - 0.398/SW

PD

max

 = 2.712 x SW + 0.068 - 0.015/SW

Inch system (PD and SW in inch) :

PD

min

 = 1.935 x SW + 18.74 - 616.9/SW

PD

max

 = 2.712 x SW + 2.68 - 23.25/SW

BarcoReality 6300 :

Metric system (PD and SW in meter) :

PD

min

 = 1.982 x SW + 0.476 - 0.388/SW

PD

max

 = 2.778 x SW + 0.068 - 0.015/SW

Inch system (PD and SW in inch) :

PD

min

 = 1.982 x SW + 18.74 - 601.4/SW

PD

max

 = 2.778 x SW + 2.68 - 23.25/SW

Lens Cleaning

Procedure

To minimize the possibility of damaging the optical coating or scratching exposed lens

surface, we have developed recommendations for cleaning the lens.

FIRST, we recommend you try to remove any material from the lens by blowing it off

with clean, dry deionized air.  DO NOT use any liquid to clean the lenses.

A Toraysee

TM

 cloth is included with the lens kit.

Proceed as follows :

1

2

3

5

5

6

Always wipe lenses with a CLEAN Toraysee

TM

 cloth.

Always wipe lenses in a single direction.  Do not wipe back and for-

wards across the lens surface as this tends to grind dirt into the coating.

Do not leave cleaning cloth in either an open room or lab coat pocket,

as doing so can contaminate the cloth.

If smears occur when cleaning lenses, replace the cloth.  Smears are

the first indication of a dirty cloth.

Do not use fabric softener when washing the cleaning cloth or softener

sheets when drying the cloth.

Do not use liquid cleaners on the cloth as doing so will contaminate the

cloth.

Step

Action

Order number for a new Toraysee

TM

 cloth : R379058.

Toraysee Cloth

Order Number

Press the selection key on the RCU to display the zoom/focus menu on the screen.

To focus or zoom the image :

1

Push the control disc 

é

 or 

ê

 to zoom and 

ç

 or 

è

 to focus the image.

2

When finished, press exit key.

See also owner’s manual of the projector, chapter ‘Controlling’, item ‘The selection key’.

Adjusting the

Lens

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