2. Installation and ConnectionsThrow Distance and Screen Size

The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of installation.

 

 

 

 

 

 

 

Screen center

 

 

 

 

 

 

 

 

 

 

 

α

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

2.54”/64.5mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Projector bottom

 

 

Lens center

Screen bottom

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

Distance Chart

 

 

 

 

B = Vertical distance between lens center and screen center

 

 

 

 

C =Throw distance

 

 

 

 

D =

Vertical distance between lens center and screen bottom (top of screen for ceiling application)

α= Throw angleNOTE: Distances may vary +/-5%.
LT380

 

Screen Size

 

B

 

C

 

D

 

α

Diagonal

Width

Height

 

Wide – Tele

 

Wide – Tele

inch

inch

inch

inch

 

inch

 

inch

degree

21

17

13

5

– –

28

-2

– – 9.2

25

20

15

5

27

33

-2

11.2

– 9.2

30

24

18

6

33

41

-3

11.1

– 9.0

40

32

24

9

45

55

-3

10.8

– 8.9

60

48

36

13

69

84

-5

10.6

– 8.7

72

58

43

16

83

– 102

-6

10.5

– 8.7

80

64

48

17

93

– 113

-7

10.5

– 8.7

84

67

50

18

98

– 119

-7

10.5

– 8.7

90

72

54

19

105

– 128

-8

10.5

– 8.6

100

80

60

22

117

– 142

-8

10.4

– 8.6

120

96

72

26

141

– 171

-10

10.4

– 8.6

150

120

90

32

176

– 214

-13

10.4

– 8.6

180

144

108

39

212

– 257

-15

10.4

– 8.6

200

160

120

43

236

– 286

-17

10.3

– 8.6

210

168

126

45

248

– 301

-18

10.3

– 8.6

240

192

144

52

284

– 344

-20

10.3

– 8.6

270

216

162

58

320

– 387

-23

10.3

– 8.5

300

240

180

65

356

– 431

-25

10.3

– 8.5

 

Screen Size

 

B

 

C

 

D

 

α

Diagonal

Width

Height

 

Wide – Tele

 

Wide – Tele

inch

mm

mm

mm

mm

 

mm

 

mm

degree

21

533

427

320

115

– –

710

-45

– – 9.2

25

635

508

381

137

690

850

-54

11.2

– 9.2

30

762

610

457

164

840

1040

-64

11.1

– 9.0

40

1016

813

610

219

1150

1400

-86

10.8

– 8.9

60

1524

1219

914

329

1750

2140

-129

10.6

– 8.7

72

1829

1463

1097

394

2120

2580

-154

10.5

– 8.7

80

2032

1626

1219

438

2360

2870

-171

10.5

– 8.7

84

2134

1707

1280

460

2480

3020

-180

10.5

– 8.7

90

2286

1829

1372

493

2660

3240

-193

10.5

– 8.6

100

2540

2032

1524

548

2970

3600

-214

10.4

– 8.6

120

3048

2438

1829

657

3570

4340

-257

10.4

– 8.6

150

3810

3048

2286

821

4480

5440

-322

10.4

– 8.6

180

4572

3658

2743

986

5390

6540

-386

10.4

– 8.6

200

5080

4064

3048

1095

6000

7270

-429

10.3

– 8.6

210

5334

4267

3200

1150

6300

7640

-450

10.3

– 8.6

240

6096

4877

3658

1314

7210

8740

-514

10.3

– 8.6

270

6858

5486

4115

1479

8120

9840

-579

10.3

– 8.5

300

7620

6096

4572

1643

9030

– 10940

-643

10.3

– 8.5

LT280

 

Screen Size

 

B

 

C

 

D

 

α

 

Diagonal

Width

Height

 

Wide – Tele

 

Wide – Tele

inch

inch

inch

inch

 

inch

 

inch

degree

21

17

13

5

– –

28

-1

– –

10.0

25

20

15

6

28

34

-2

12.1

10.0

30

24

18

7

34

41

-2

11.9

9.8

40

32

24

10

46

56

-2

11.8

9.8

60

48

36

14

69

84

-4

11.7

9.6

72

58

43

17

83

102

-4

11.6

9.6

80

64

48

19

93

113

-5

11.6

9.6

84

67

50

20

98

119

-5

11.6

9.6

90

72

54

21

105

127

-6

11.6

9.6

100

80

60

24

117

141

-6

11.6

9.6

120

96

72

29

141

170

-7

11.5

9.6

150

120

90

36

176

213

-9

11.5

9.5

180

144

108

43

211

256

-11

11.5

9.5

200

160

120

48

235

285

-12

11.5

9.5

210

168

126

50

247

299

-13

11.5

9.5

240

192

144

57

283

342

-15

11.5

9.5

270

216

162

64

318

385

-17

11.5

9.5

300

240

180

72

354

428

-18

11.5

9.5

 

Screen Size

 

B

 

C

 

D

 

α

 

Diagonal

Width

Height

 

Wide – Tele

 

Wide – Tele

inch

mm

mm

mm

mm

 

mm

 

mm

degree

21

533

427

320

127

– –

720

-33

– – 10.0

25

635

508

381

152

710

860

-39

12.1

10.0

30

762

610

457

182

860

1050

-47

11.9

9.8

40

1016

813

610

243

1160

1410

-62

11.8

9.8

60

1524

1219

914

364

1760

2140

-93

11.7

9.6

72

1829

1463

1097

437

2120

2580

-112

11.6

9.6

80

2032

1626

1219

485

2360

2870

-125

11.6

9.6

84

2134

1707

1280

509

2480

3010

-131

11.6

9.6

90

2286

1829

1372

546

2660

3230

-140

11.6

9.6

100

2540

2032

1524

606

2960

3590

-156

11.6

9.6

120

3048

2438

1829

728

3570

4320

-187

11.5

9.6

150

3810

3048

2286

909

4470

5410

-234

11.5

9.5

180

4572

3658

2743

1091

5370

6510

-280

11.5

9.5

200

5080

4064

3048

1213

5970

7230

-311

11.5

9.5

210

5334

4267

3200

1273

6270

7600

-327

11.5

9.5

240

6096

4877

3658

1455

7180

8690

-374

11.5

9.5

270

6858

5486

4115

1637

8080

9780

-420

11.5

9.5

300

7620

6096

4572

1819

8980

– 10870

-467

11.5

9.5

11