Vidikron 140/150 User Manual

Vision Model 140/150 Owner’s Operating Manual

PRE

IMINAR

Throw Distance

Throw distance is the distance measured from the front of the projector to the screen. This is
an important calculation in any projector installation as it determines whether or not you
have enough room to install your projector with a desired screen size and if your image will
be the right size for your screen.

You can quickly estimate the throw distance by taking the width of the screen and
multiplying it by the lens throw ratio; see Figure 3-2. The result of this calculation tells you
roughly how far back the projector should be positioned from the screen in order to project a
focused image large enough to fill the screen.

Figure 3-2. Estimating Throw Distance

Table 3-3 lists the available lens options for the Vision 140/150 and their associated throw
ratios.

Table 3-3. Vision 140/150 Lens Options and Throw Ratios

Lens Option

(Note 2)

Throw Ratio

with Primary

Lens Only

Throw Range in inches,

with 96x54-inch (1.78:1)

Screen

Throw Ratio

with Primary

Lens and

Anamorphic

Lens

Throw Range in inches,

with 126.9x54-inch

(2.35:1) Screen

Minimum

Maximum

Minimum

Maximum

1.40 - 1.60

134.40

153.60

Not Applicable (Note 2)

1.70 - 2.25

163.20

216.00

2.40 - 3.97

230.40

381.12

1.81 - 3.05

229.69

387.04

4.20 - 6.57

403.20

630.72

3.20 - 5.04

406.08

639.58

Notes:

1. Throw distance does not affect image quality, provided these ranges are taken into account.

2. Only lens options D and E can be used with the optional CineWide (secondary anamorphic) lens. Doing so

affects the throw distances as shown here.

Estimating Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio

Scr

een w

idth (w)