Projection Distance And Screen Size - JVC D-ILA DLA-M2000LU Instructions Manual

Installing the Projector

Projection Distance and Screen Size

• The range of projection distances that can be focused depends on the lens unit (optional) to be used. When the aspect ratio
of the screen is 4:3, the range is as follows and you need to install the projector within this range.
Lens type
GL-M2910G
GL-M2915SG
GL-M2920ZG
GL-M2930SZG
*: The value for projection distance is a guide (reference) one. The projected image size may vary depending on the
manufacturing tolerance of the projection lens.
Screen
90˚
To move the Shift position by 50%, set the bottom edge of the projec-
tion screen so that it is at the same height as the center of the lens.
Notes
• For detailed relationship between projection distances and projection screen sizes, refer to Appendix A. The relationships for
both 4:3 and 16:9 ratios are listed there.
• When installing a screen, use a 4:3 aspect-ratio picture.
• (A 16 : 9 aspect-ratio picture is projected based on the width of the range in which a 4:3 aspect-ratio picture is projected.)
• The diagonal length of a 16:9 aspect-ratio screen is about 91.8% that of a 4:3 aspect-ratio screen. This value is only a guide
(reference).
• If sunlight or lamp light strikes the projection screen directly, the picture tends to become pale and dim. Use a curtain or
other means to shield the light.
• Set the projector horizontally on a surface that is within the range of adjustable angles (up/down adjustment angle: +7° ;
horizontal adjustment angle: ±1.5°).
• If the keystone is adjusted, the projected screen becomes smaller.
• When hanging from the ceiling, use a dedicated hanging fixture (not supplied).
I Optional Lenses
This projector does not include a lens. You can select one of the optional lenses to adjust the projection distance. Please ask
your authorized dealer or service center to install the lens.
Lens model
GL-M2910G
GL-M2915SG
GL-M2920ZG
GL-M2930SZG
18
Approximate projection distance
0.77 m to 4.03 m
1.76 m to 4.50 m
2.77 m to 19.71 m
4.74 m to 29.87 m
Screen with 4:3 aspect ratio
90˚
Function
Powered focus for rear projection, short focal length (subject ratio 1:1), 0% influence.
Powered focus, short focal length (subject ratio 1.5:1), powered image adjustment (2%
zoom), includes manual vertical shift function, 30%-55% influence
Powered zoom/powered focus lens (subject ratio 2:1-3:1), 50% influence.
Powered zoom/powered focus long focal length lens (subject ratio 2.9:1-5.5:1), includes
manual vertical shift function, 30%-55% influence.
90˚
Center line of the lens
Change of projection screen
according to aspect ratio
Screen with 16:9 aspect ratio