Started Getting

Setting up

JJProjection distance for PT-CW331RE, PT-CW241RE

QQFor 16:10 aspect ratio (unit: m)

(There maybe some errors in the dimensions shown in the table below.)

Projection size

 

Throw

Throw

Projector top to

Projector bottom to

 

 

 

Bottom of the

Diagonal (SD)

Height (SH)

Width (SW)

distance A

distance B

Bottom of the screen

screen

 

 

 

 

 

 

1.778 (70")

0.942

1.508

0.516

0.181

0.161

0.236

2.032 (80")

1.077

1.723

0.597

0.262

0.194

0.269

2.286 (90")

1.212

1.939

0.678

0.343

0.228

0.303

2.540 (100")

1.346

2.154

0.759

0.424

0.262

0.337

QQFor 16:9 aspect ratio (unit: m)

(There maybe some errors in the dimensions shown in the table below.)

Projection size

 

Throw

Throw

Projector top to

Projector bottom to

 

 

 

Bottom of the

Diagonal (SD)

Height (SH)

Width (SW)

distance A

distance B

Bottom of the screen

screen

 

 

 

 

 

 

1.778 (70")

0.872

1.550

0.532

0.197

0.216

0.291

2.032 (80")

0.996

1.771

0.615

0.280

0.257

0.332

2.286 (90")

1.121

1.992

0.698

0.363

0.299

0.374

QQFor 4:3 aspect ratio (unit: m)

(There maybe some errors in the dimensions shown in the table below.)

Projection size

 

Throw

Throw

Projector top to

Projector bottom to

 

 

 

Bottom of the

Diagonal (SD)

Height (SH)

Width (SW)

distance A

distance B

Bottom of the screen

screen

 

 

 

 

 

 

1.778 (70")

1.067

1.422

0.591

0.256

0.191

0.266

2.032 (80")

1.219

1.626

0.683

0.348

0.229

0.304

QQCalculation formulas for projection distance

Any other projection distance can be obtained according to the screen dimensions (m) using the following calculations.

The calculation result is with the "m" unit. (The calculated distance below may contain a certain error.) If the screen dimensions are written as "SD",

 

For 16:10 aspect ratio

For 16:9 aspect ratio

For 4:3 aspect ratio

Screen height (SH)

= SD × 0.530

= SD × 0.490

= SD × 0.6

Screen width (SW)

= SD × 0.848

= SD × 0.872

= SD × 0.8

Throw distance A

= 0.3189 × SD - 0.0508

= 0.3276 × SD - 0.05072

= 0.3610 × SD - 0.05069

Attention

zzIn order to maintain the performance of the lens, please set up the Throw diatance A between 0.516 m to 0.759 m.

Note

zzThe throw ratio is 0.35:1 when the projection size is 80 inch.

24 - ENGLISH