Barco Whd (3.5:1) Lens Technical Specifications

							The WHD(3.5:1) lens is developed
for those applications which
require both 16:9 and 4:3
projection on the same screen,
particular useful in cinema front
projection applications. The WHD
(3.5:1) lens transforms the
original 4:3 picture on the LCD
panels into a 16:9 format on the
screen. Meanwhile there is still
sufficient resolution for 4:3
projection of standard video or
data projection.
Lens For BARCO 5/8/9000 Series Projectors
WHD (3.5:1) LENS
Features
• High definition lens with a throwing distance of
3.5 times the screen width (1 - 10 meter or 42 - 400
inch screen width)
• Transformation of the 4:3 picture on the LCD
panels into a 16:9 format on the screen.
• No decrease in performance: high light output and
full resolution of the 16:9 picture.
• Compatible with all currently proposed HDTV
television standards (Eureka 95, Hi-Vision, ACTV,
IDTV, EDTV), standard video (PAL, Secam, NTSC) and
computer data both in VGA and MACII  standard. 
						

							Pixel Map Processor Lens
Source On LCD Panel On Screen
Technical Specifications
Ref. no: R598024 - 9 May ‘98 - Printed in Belgium
BARCO Projection Systems is an ISO 9001
registered company.
The information and data given are typical for the
equipment described. However any individual
item is subject to change without any notice.
BARCO Projection Systems
Head Office
Noordlaan 5  8520 Kuurne - Belgium
Tel: +32 /56/ 368 211 Fax: 32 /56/351 651
E-mail: [email protected]
Visit Barco at the web: www.barco.com Projection Distance
Screen Width  SW[m] 1 10
Project. Distance PD[m] 4.1 32
Screen Height  SH[m] 0.6 5.3
PD  = 3.076 x SW + 1.05 [m]
= 3.076 x SW + 41.33 [inch]
SH  = 0.526 x SW + 0.052 [m]
= 0.526 x SW + 2.047 [inch]
Relative Luminance
80 %, The HD(2.2:1) is the
reference lens for the ANSI
lumens.
Weight
Net weight: 10.16 kg - 22 lbs
Shipping weight: 12 kg - 26 lbs
Order Information
WHD (3.5:1) Lens R9829320
Projection of 16:9 pictures
requires a HDTV -input 
module R9827920
Dimensionsmm inch
L1Total length 494.6 19.5
L2 390.0 15.4
L3 214.2 8.4
L4 95.3 3.8
D1 Total diameter 175.5 6.9
D2 171.5 6.8
D3 163.5 6.44
K1 Front Focus
K2 Rear Focus
An original HDTV source has 32
kHz or 64 kHz scan frequency and
an aspect ratio of 16:9.The original 16:9 picture is reduced
to 756 x 425 pixels on the lcd panel
with the 16:9 format.A HD lens magnifies the picture with
reduced light output and reduced
resolution.
An original HDTV source has 32
kHz or 64 kHz scan frequency and
an aspect ratio of 16:9.The original 16:9 picture is transformed
to a 4:3 picture on the lcd panel with
the full 756 x 556 pixel resolution.The  WHD (3.5:1) lens projects the
original 16:9 picture with maximum
light output and full resolution.
A standard NTSC, Secam, or PAL source
has a scan frequency of 15 kHz or 32
kHz with an aspect ratio of 4:3.The original 4:3 picture is compressed
to a picture with 756 x 556 pixels on
the lcd panel.The original 4:3 picture is projected
with the WHD (3.5:1) lens in the
middle of the screen.