220 V Revelation by Draper
Page 3 of 8
Securing Projector
Once all adjustments to the projector and Revelation are made, the projector
should be secured into place using the eight projector standoffs provided. Two
of the standoffs have a removable hook and loop material to be used at the
rear of the projector for ease of removing the projector. The standoffs will en-
sure proper relocation of the projector after periodic maintenance or repair to
A light path is the projector’s spread of light and its relationship to the cen-
terline of the lens. Since the Revelation folds a light path twice (bounces the
image off of two first surface mirrors), it’s critical to understand your projector’s
light path to know approximately where the image will land on the wall. Con-
sult the projector's manufacturer to determine its light path geometry.
Single lens projectors fall into one of four categories of light path geometry as
depicted in the illustrations at right.
Light Path A
Single lens projectors with light path geometry “A” work well with the Reve-
lation. Since the light is already projecting at a downward angle to the cen-
terline, the image is projected further down on the wall resulting in a lower
installation point for the projection screen. A projector with Light Path A
mounted in the Revelation projects a light path similar to the same projector
ceiling mounted with the centerline of its lens mounted approximately 51-
76mm (2"-3") below the ceiling.
Light Path B
Single lens projectors with light path geometry “B” will work with the Reve-
lation within certain limitations. The upper edge of the image runs parallel
to the centerline of the lens. A projector with Light Path B mounted in the
Revelation projects a light path similar to the same projector ceiling mounted
with the centerline of its lens mounted approximately 153-203mm (6"-8")
below the ceiling. By using the built in adjustment features of the Revelation,
you should be able to bring the top of the image below the ceiling. Adjusting
the ceiling closure door may introduce a keystone effect to the image. If your
projector has a keystone correction feature you may be able to compensate
for keystoning.
Light Path C
Single lens projectors with light path geometry “C” will work with the Reve-
lation within certain limitations. The portion of the image above the centerline
of the lens projects at a gradual angle up towards the ceiling. A projector
with Light Path C mounted in the Revelation projects a light path similar to
the same projector ceiling mounted with the centerline of its lens mounted
approximately 153-203mm (6"-8") below the ceiling. By using the built in
adjustment features of the Revelation, you should be able to bring the top of
the image below the ceiling. Adjusting the ceiling closure door may introduce
a keystone affect to the image. If your projector has a keystone correction
feature you may be able to compensate for keystoning.
Light Path D
Single lens projectors with light path geometry “D” will not work with the Rev-
elation. The portion of the image above the centerline of the lens projects at
too steep of an angle to be lowered below ceiling level, even with the adjust-
ment features built into the Revelation.
*Consult your projector manufacturer if in doubt about its light path geometry,
throw distance or projector dimensions. Also, be sure your projector has the
ability to invert its image.
Choose a projector* based on its light path
B
C
D
A
the projector. Just peel the adhesive backing from the bottom of the standoffs
and place them around the projector as shown in the dimensional diagram.
Important: Once the adhesive is placed onto the surface of the inner pan it is
very difficult to remove. It is very important to plan ahead when placing these
standoffs around the projector.
www.draperinc.com
(765) 987-7999
Please Note: The Revelation is not compatible with lenses that have a
throw distance of less than 1.5:1.
