Panasonic ET-ELS20 User manual

ENGLISH
FRANÇAIS
Commercial Use
Model No. ET-ELS20
DPQX1114ZB
Zoom Lens
Operating Instructions
Thank you for purchasing this Panasonic product.
■To ensure correct use of this lens, please read the operating instructions supplied
with the lens and the projector carefully.
■Before using this product, be sure to read “Read this rst!” (Page 3).
■Please save this manual for future use.

2-ENGLISH
Read this rst! ......................................................................................3
Before Use.............................................................................................4
Attaching the Lens / Detaching the Lens...........................................5
Before replacing the projection lens........................................................5
Attaching and Detaching the Lens ..........................................................5
Making Adjustments ............................................................................6
Correcting the Focus...............................................................................6
Projection relationships.......................................................................8
Adjustment range by the lens position shift (optical shift)............10
Specications .....................................................................................11
Dimensions .........................................................................................11
Dimensional relationship...................................................... Appendix
█ Contents

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Read this rst! Always follow these precautions
WARNING:
Do not look at or place your skin into the light emitted from the lens while the
projector is being used.
Doing so can cause burns or loss of sight.
zStrong light is emitted from the projector’s lens. Do not look at or place your hands
directly into this light.
zIn addition, turn off the power and switch off the main power when you are away
from the projector.
Do not project an image with the lens cover attached.
zDoing so can cause re.
Do not allow children to reach the spacer.
zThe spacers can cause personal injury if swallowed.
zIf the spacers are swallowed, seek medical advice immediately.
CAUTION:
Before replacing the projection lens, be sure to turn off the power and
disconnect the power plug from the wall outlet.
zUnexpected projection of light may cause injury to eyes.
zReplacing the projection lens without removing the power plug may result in electric
shock.
Do not stand in front of the lens while the projector is being used.
Doing so can cause damage and burns to clothing.
zStrong light is emitted from the projector’s lens.
Do not place objects in front of the lens while the projector is being used.
Doing so can cause re, damage to an object, or malfunction of the projector.
zStrong light is emitted from the projector’s lens.
Do not open the desiccant bag. Do not eat the contents.
Inadvertently ingesting desiccant could be harmful.
zIf the desiccant gets into your eyes or mouth, immediately rinse with plenty of water
and seek medical attention.
zKeep desiccant out of the reach of children.

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■Supported projectors
PT-MZ880 / PT-MZ780 / PT-MZ680 / PT-MZ770 / PT-MZ670 / PT-MZ570 / PT-MW730 /
PT-MW630 / PT-MW530 / PT-EZ770 / PT-EZ580 / PT-EW730 / PT-EW640 / PT-EW540 /
PT-EX800 / PT-EX610 / PT-EX510
Note
zThis manual omits the alphabets at the end of projector model numbers.
zModels other than the above may also be supported. Refer to the operating instructions of
the projector you are using.
■Supplied Accessories
Make sure that the following has been provided.
Part name Appearance (quantity)
Lens cover
1 each
Spacer
(T0SAS0001--) (Colors: black, cream, clear) 4 each
(The product is
delivered with a lens
cap attached.)
Before Use

ENGLISH-5
Before replacing the projection lens
Return the projection lens to the home position before replacing or removing it.
For details on how to return the lens to the home position, refer to the operating
instructions of the projector.
Attention
zMake sure that the projector power supply is switched off before attaching or detaching the
projection lens.
zAfter removing the projection lens, store it safely away from vibration or impacts.
zDo not touch the electric contact points of the projection lens with your ngers. Dust and
dirt on the contacts may cause contact malfunctions.
zDo not touch the surface of the lens with bare hands. Finger prints and dirt on the surface
of the lens will be magnied by the lens and lower the quality of the projected image. Place
the supplied lens cover on the zoom lens when the projector is not in use.
zThe lens is made of glass. The lens could be damaged if brought into contact with or
rubbed against hard objects. Handle the lens carefully.
zUse a clean, soft and dry cloth to wipe away dust and dirt from the lens.
Do not use uffy cloths containing oil, water or dust for cleaning. The material in the lens is
easily damaged, so do not apply excessive pressure when wiping it.
Attaching and Detaching the Lens
For details on attaching and detaching the projection lens, refer to the operating
instructions of the projector.
Attaching the Lens / Detaching the Lens

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Making Adjustments
Correcting the Focus
When the projection lens is attached to the projector and images are being projected
onto the screen, the peripheral focus may be out of focus in some localized areas.
In such cases, use the supplied spacers to correct the focus of these areas, and perform
adjustments so that the entire image is even.
■Relationship between lens orientation and screen focus
If the projection lens is tilted with respect to the plane of the screen, uneven focus will
result. For example, when the front side of the lens (screen side) is tilted downward as
shown in the gure below (direction of the dotted arrow), the upper part of the screen
will be tilted backward and the lower part of the screen will be tilted forward.
Projection lens
Image formation surface
Screen surface versus focal point
■Procedure for correcting the focus
Attention
zTurn off the projector before removing the projection lens.
Note
zFocus correction requires some technical skill. Be sure to have a person with knowledge of
projectors or a service technician to perform adjustments.
zThis adjustment is not supported on the PT-MZ880 / PT-MZ780 / PT-MZ680.
D
C
A
B
Fig. 1
AA
投写レンズ
ネジ
スペーサー
レンズマウンター
D
D
B
C
Fig. 2
Screws
Projection lens
Lens mounter
Spacers
1) Install the projector in the installation location, and turn it on to project an image.
2) Move the lens to its home position.
3) Operate the projector to shift the focus of the entire projected image toward
the front of the screen.

ENGLISH-7
Spacer Color Thickness Correction distance
during projected image size SD (m)
Clear 0.1 mm SD × SD × 51.5
Black 0.2 mm SD × SD × 103
Cream 0.3 mm SD × SD × 154.5
Correction distance guide: When the projected image size is 1.52 m (60 in.), the corrected
distance when one 0.1 mm thick spacer is inserted is 120 mm.
Attention
zInstalling the lens mounter, be careful not to put wiring between the lens mounter and
the projector unit.
4) Operate the projector to shift the focus toward the screen a little bit at a time until
one of the areas A to D in Fig. 1 just comes into focus on the screen, and then stop.
zIn this state, the “just focus points” of the unfocused areas are positioned just in front of
the screen. The distance between this position and the screen is the correction distance.
5) Insert the spacers between the body of the projector and the lens mounter, as
shown in Fig. 2.
zRemove the lens mounter from the projector, and insert the spacers in the positions
that correspond to the unfocused areas.
zThe “just focus points” of the areas for which you inserted spacers will be corrected
toward the rear of the screen.
zMake sure the adhesive surfaces of the spacers face the lens mounter when inserting them.
zThe correction distance is determined by the thickness and quantity of spacers
inserted. Insert spacers according to the correction distance.
(The unit for correction distances derived from the formulas in the following table is millimeters.)
Making Adjustments (continued)

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Projection relationships
The dimensional relationship between the screen and the projector is shown below.
■Dimensional relationship diagram
L (LW/LT)
L (LW/LT)
SW SH
H
SH
SW
SD
L1
L1
Screen
Projected image
Note
zThis diagram assumes that the size and position of the projected image will be adjusted so
that the image lls the entire screen.
zThis illustration is not drawn to scale.
L Projection distance
LW Minimum distance
LT Maximum distance
L1 Lens protrusion dimension
SH Projected image height
H Distance from the lens center to the lower edge of the projected image
SW Projected image width
SD Projected image size
zDimension for L1 (approximate values) (Unit: m)
Projector model Dimension for L1
(approximate value)
PT-MZ880 / PT-MZ780 / PT-MZ680 0.002
PT-MZ770 / PT-MZ670 / PT-MZ570 / PT-MW730 / PT-MW630 / PT-MW530 0.015
PT-EZ770 / PT-EZ580 / PT-EW730 / PT-EW640 / PT-EW540 / PT-EX800 /
PT-EX610 / PT-EX510 0.059
Note
zThe illustrations of projectors in this manual are for informational purposes only and do not
represent a specic projector model. Congurations may vary with the model.

ENGLISH-9
Projection relationships (continued)
Attention
zTo prevent blocking of the intake and exhaust vents, maintain clearances from walls and
objects of at least
1 000 mm (3'3") for the exhaust vent and at least 500 mm (1'8") for the intake vent.
zAvoid setting up in places which are subject to sudden temperature changes, such as near
an air conditioner or lighting equipment (studio lamps, etc.).
■Dimensional relationship
For details on the projection distance (L), refer to “Projected image size and Projection
distance” and “Projection distance formulas” in the Appendix.
Note
zFor details on “Projected image size and Projection distance” for projector models other
than PT-MZ880 / PT-MZ780 / PT-MZ680 / PT-MZ770 / PT-MZ670 / PT-MZ570 /
PT-MW730 / PT-MW630 / PT-MW530 / PT-EZ770 / PT-EZ580 / PT-EW730 / PT-EW640 /
PT-EW540 / PT-EX800 / PT-EX610 / PT-EX510, refer to “Setting up” in the operating
instructions of the projector.

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Perform the lens position shift within the adjustment range.
The focus may change when the lens position is shifted out of the adjustment range.
This is because the movement of the lens is restricted to protect the optical parts.
Projection position can be adjusted with the optical axis shift based on the home position
in the respective range.
PT-MZ880 / PT-MZ780 / PT-MZ680 /
PT-MZ770 / PT-MZ670 / PT-MZ570 /
PT-MW730 / PT-MW630 / PT-MW530
0.67V
0.19V0.19V
0.67V
0.35H
0.30H0.30H
0.35H
Projected image
height V
Standard projection position
Projected image
width H
PT-EZ770 / PT-EW730 / PT-EZ580 /
PT-EW640 / PT-EW540
0.6 V
Projected image width H
0.1 H0.1 H
Projected image
height V
0.6 V
Standard projection position
PT-EX800 / PT-EX610 / PT-EX510
0.5 V
Projected image width H
0.1 H0.1 H
Projected image
height V
0.5 V
Standard projection position
Adjustment range by the lens position shift (optical shift)