Installation Guidelines

Lenses

Which Lens has to be selected.

1Determine the required screen width.

2Determine the approximate position of the projector in the projection room with regard to the screen and measure the

projector-screen distance (PD).

3Use the lens formulas to find the best corresponding PD with regard to the measured projector-screen distance for the required screen width.

The desired lens is determined (the order number is given in the tabel).

Available lenses

QLD lenses :

 

 

 

Name Lens

Lenght mm (inch)

Diameter mm (inch) Weight kg (lbs)

Order number

QLD (1.5-2.0:1)

329

183

R9840130

QLD (2.0-2.5:1)

335.5

160

R9840140

QLD (2.5-4.0:1)

285.7

155

R9840150

QLD (4.0-7.0:1)

383

144.5

R9840160

QLD (5.6-12.0:1)

 

 

R9840430

QLD (1.2:1)

447

183

R9840120

Remark : When using these lenses with the ELM G10, the throw ratio is these for the ELM R12 x 1.25.

LD lenses :

 

 

Name Lens

Lenght mm (inch) Diameter mm (inch) Weight kg (lbs)

Order number

LD (0.8:1)

 

R9840420

LD (1.5-2.5:1)

 

R9840090

LD (2.5-4.0:1)

 

R9840270

LD (4.0-7.0:1)

 

R9840280

Remark : These lenses can only be used in combination with an adaptor ring.

Lens formulas to calculate the projector distance

For QLD lenses :

 

 

 

Metric formulas (meter)

QLD (1.5-2.0:1)

Min :

PD = 1.53 x SW - 0.05

 

Max :

PD = 2.05 x SW - 0.07

QLD (2.0-2.5:1)

Min :

PD = 2.04 x SW - 0

 

Max :

PD = 2.51 x SW - 0.02

QLD (2.5-4.0:1)

Min :

PD = 2.50 x SW - 0.12

 

Max :

PD = 4.01 x SW - 0.20

QLD (4.0-7.0:1)

Min :

PD = 3.99 x SW - 0.05

 

Max :

PD = 7.04 x SW - 0.23

QLD (5.6-12.0:1)

Min :

PD = 5.64 x SW ± 0.15

 

Max :

PD = 12.0 x SW ± 0.15

QLD (1.2:1)

 

PD = 1.24 x SW - 0.08

For LD lenses :

 

 

 

Metric formulas (meter)

LD (0.8:1)

 

PD = 0.64 x SW - 0.03

LD (1.5-2.5:1)

Min :

PD = 1.19 x SW - 0.01

 

Max :

PD = 2.01 x SW - 0.05

LD (2.5-4.0:1)

Min :

PD = 1.97 x SW - 0.01

 

Max :

PD = 3.17 x SW - 0.05

LD (4.0-7.0:1)

Min :

PD = 3.16 x SW - 0.10

 

Max :

PD = 5.56 x SW - 0.17

Inch formulas (inch)

Min : PD = 1.53 x SW - 1.97

Max : PD = 2.05 x SW - 2.76

Min : PD = 2.04 x SW - 0

Max : PD = 2.51 x SW - 0.79

Min : PD = 2.50 x SW - 4.72

Max : PD = 4.01 x SW - 7.87

Min : PD = 3.99 x SW - 1.97

Max : PD = 7.04 x SW - 9.06

Min : PD = 5.64 x SW ± 5.9

Max : PD = 12.0 x SW ± 5.9 PD = 1.24 x SW - 3.14

Inch formulas (inch)

PD = 0.64 x SW - 1.18

Min : PD = 1.19 x SW - 0.39

Max : PD = 2.01 x SW - 1.97

Min : PD = 1.97 x SW - 0.39

Max : PD = 3.17 x SW - 1.97

Min : PD = 3.16 x SW - 3.93

Max : PD = 5.56 x SW - 6.69

Note : Lens program to calculate the projector distance is available on the BARCO webside : http://www.barco.com/projecti/cusserv/index.htm

The lens program can also be ordered on floppy or CD.

5976072 BARCO ELM R12 17102000

 

3-7

 

Page 21
Image 21
Barco R9001490 owner manual Which Lens has to be selected