Standard Zoom Lens (Wide)

α

Degree

9.0

8.9

8.8

8.8

8.8

8.7

8.7

8.7

8.7

8.6

8.6

8.6

8.6

β (sin= α)

 

0.16

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

γ (cos= α)

 

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screen Size

inch

32

48

56

64

72

80

96

120

144

160

192

216

240

H–Width

mm

812.8

1219.2

1422.4

1625.6

1828.8

2032

2438.4

3048

3657.6

4064

4876.8

5486.4

6096

4 : 3 Diagonal

inch

40

60

70

80

90

100

120

150

180

200

240

270

300

 

mm

1016

1524

1778

2032

2286

2540

3048

3810

4572

5080

6096

6858

7620

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

mm

1557

2377

2787

3197

3608

4018

4838

6069

7300

8120

9761

10992

12223

inch

61.3

93.6

109.7

125.9

142.0

158.2

190.5

238.9

287.4

319.7

384.3

432.76

481.2

 

C

mm

1537

2349

2754

3160

3566

3971

4783

6000

7217

8028

9651

10868

12085

inch

60.5

92.5

108.4

124.4

140.4

156.4

188.3

236.2

284.1

316.1

380.0

427.9

475.8

 

D

mm

-32

-1

14

29

44

60

90

135

181

211

272

317

363

inch

-1.2

-0.0

0.6

1.1

1.7

2.3

3.5

5.3

7.1

8.3

10.7

12.5

14.3

 

E

mm

336

458

519

580

641

702

825

1008

1191

1313

1557

1740

1923

inch

13.2

18.0

20.4

22.9

25.3

27.7

32.5

39.7

46.9

51.7

61.3

68.5

75.7

 

Formulas (mm)

H mm=Horizontal Screen Width

C= [(53.2×H) / 26.6]– 85.4 α= Tan-1(8×H) / (26.6×C)

A=C / cosα

E= 92.2 + [(8×H) / 26.6]

D= (0.375×H) – E

A : Distance between the lens and the screen center

C : Horizontal throw distance between the screen surface and the lens

D : Vertical distance between the projector foot and the base of image

E : Vertical distance between the projector foot and the screen center

Formulas (inch)

Hinch=Horizontal Screen Width

C = [(50.7×H)– 85.4] / 25.4 α= Tan-1(8×H) / (26.6×C)

A =C / cosα

E = [92.2 + (7.6×H ) ]/ 25.4 D = (0.375×H) – E

Standard Zoom Lens (Tele)

α

 

Degree

7.0

6.8

 

6.8

6.8

6.8

6.7

6.7

6.7

 

6.7

6.7

6.7

6.7

6.6

β (sin= α)

 

 

0.12

0.12

 

0.12

0.12

0.12

0.12

0.12

0.12

0.12

0.12

0.12

0.12

0.12

γ (cos= α)

 

 

0.99

0.99

 

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screen Size

 

inch

32

48

 

56

64

72

80

96

120

 

144

160

192

216

240

H–Width

 

mm

812.8

1219.2

 

1422.4

1625.6

1828.8

2032

2438.4

3048

3657.6

4064

4876.8

5486.4

6096

4 : 3 Diagonal

 

inch

40

60

 

70

80

90

100

120

150

 

180

200

240

270

300

 

 

mm

1016

1524

 

1778

2032

2286

2540

3048

3810

4572

5080

6096

6858

7620

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

mm

2013

3075

 

3606

4137

4668

5199

6260

7853

9446

10508

12631

14224

15817

 

inch

79.3

121.1

 

142.0

162.9

183.8

204.7

246.5

309.2

371.9

413.7

497.3

560.0

622.7

 

 

 

C

 

mm

1999

3053

 

3581

4108

4635

5163

6217

7800

9382

10436

12546

14128

15710

 

inch

78.7

120.2

 

141.0

161.7

182.5

203.3

244.8

307.1

369.4

410.9

493.9

556.2

618.5

 

 

 

D

 

mm

-32

-1

 

14

29

44

60

90

135

 

181

211

272

317

363

 

inch

-1.2

0.0

 

0.6

1.1

1.7

2.3

3.5

5.3

 

7.1

8.3

10.7

12.5

14.3

 

 

 

 

E

 

mm

336

458

 

519

580

641

702

825

1008

1191

1313

1557

1740

1923

 

inch

13.2

18.0

 

20.4

22.9

25.3

27.7

32.5

39.7

46.9

51.7

61.3

68.5

75.7

 

 

 

Formulas (mm)

 

 

 

 

 

 

 

Formulas (inch)

 

 

 

 

H mm=Horizontal Screen Width

 

 

 

 

H inch=Horizontal Screen Width

 

 

C = {[(53.2×H )/ 26.6] – 85.4}×1.3

 

 

 

 

C = {[(50.7×H)– 85.4]×1.3} / 25.4

 

α= Tan-1(8×H) / (26.6×C)

 

 

 

 

 

 

α

-1

(8×H) / (26.6×C)

 

 

A =C / cosα

 

 

 

 

 

 

 

 

= Tan

 

 

 

 

 

 

 

 

 

 

 

 

 

α

 

 

 

 

E = 92.2 + [(8×H) / 26.6]

 

 

 

 

 

 

A =C / cos

 

 

 

 

 

 

 

 

 

 

E =[ 92.2 + (7.6×H )] / 25.4

 

 

D = (0.375×H) – E

 

 

 

 

 

 

 

D = (0.375×H) – E

 

 

 

A : Distance between the lens and the screen center

C : Horizontal throw distance between the screen surface and the lens

D : Vertical distance between the projector foot and the base of image

E : Vertical distance between the projector foot and the screen center

E-20

Page 20
Image 20
NEC GT2000, GT2000R user manual Standard Zoom Lens Wide, Standard Zoom Lens Tele

GT2000, GT2000R specifications

The NEC GT2000 and GT2000R are renowned projectors that have established themselves in the realm of high-performance visual equipment, catering primarily to the needs of businesses and educational institutions. These projectors are celebrated for their exceptional image quality, versatility, and advanced features, making them a popular choice among users seeking reliability and performance.

One of the primary features of the GT2000 series is its high brightness capability. With a brightness of up to 2,500 ANSI lumens, these projectors can deliver clear and vibrant images even in well-lit environments, ensuring that presentations and lectures maintain their visual integrity regardless of ambient light conditions. This makes them ideal for large conference rooms and classrooms where visibility is crucial.

The GT2000 series also boasts impressive resolution specifications. The GT2000 offers a native resolution of XGA (1024x768 pixels), while the GT2000R enhances this to a WXGA (1280x800 pixels), providing a wider aspect ratio and higher detail for images. This improved resolution is particularly beneficial for displaying detailed graphics, charts, and videos, making them suitable for a variety of presentation types.

In terms of connectivity, the GT2000 and GT2000R projectors are equipped with multiple input options including VGA, composite video, and audio inputs. This versatility allows for seamless integration with various devices, such as laptops, DVD players, and even mobile devices, further enhancing their usability in different settings.

Another noteworthy characteristic of the GT2000 series is its advanced color reproduction technology. NEC employs a 3LCD technology in these projectors, which ensures vibrant colors and deep blacks, resulting in images that are both engaging and lifelike. This technology minimizes the possibility of color distortion, offering consistent and accurate color performance.

Users will also appreciate the long lamp life offered by the GT2000 and GT2000R, with lamps typically lasting up to 5,000 hours in eco mode. This not only reduces maintenance costs but also enhances the overall efficiency of the projector.

In conclusion, the NEC GT2000 and GT2000R projectors are equipped with a robust set of features, from high brightness and resolution to advanced connectivity options and color accuracy. Their durability and reliability make them ideal for professional and educational environments, meeting the demands of users who require high-quality projections for effective communication and learning.