Installation & User’s Manual
LEKO LITE Luminaires
1 0
FOCUS AND BEAM ADJUSTMENTS
FOCUS AND BEAM ADJUSTMENTS
1. Variable Beam Angle Models
CAUTION:
When adjusting the luminaire’s focus or beam distribution, it is important to wear protective gloves.
The luminaire produces extreme heat and all surfaces could cause serious burns if touched.
Light Field Optimization
Before adjusting beam focus, the luminaire’s light field should be adjusted for optimum performance (Peak Field or
Flat Field). The Beam Distribution Adjustment Knob moves the lamp in and out of the reflector until light
distribution is set as desired. The X and Y-Axis adjustments provide left/right and up/down adjustments to the
reflector in relation to the lamp.
Figure 6: Variable Beam Models - Beam Adjustments
To optimize luminaire light field (beam distribution):
Step 1. Make sure all frame shutters are open (out of beam path).
Step 2. Using X-Axis Adjustment, Y-Axis Adjustment, and Beam Distribution Adjustment Knob (as indicated in
Figure 6
) set beam distribution as desired. Note, X and Y-Axis adjustments require the use of a flat-head
screwdriver.
Beam Angle and Focus Adjustments
Variable Beam Angle models have both angle and focus adjustments.
To adjust beam angle and focus:
Step 1. Optimize light field before adjusting beam angle and focus. See procedure in
"Light Field Optimization"
in
previous section.
Step 2. Make sure all frame shutters are open (out of beam path).
Step 3. Loosen Beam Angle Adjustment Knob as shown in
Figure 6
.
Step 4. Move along forward (or back) until beam angle is set as desired
Step 5. Hand-tighten Beam Angle Adjustment Knob to lock position.
Step 6. Loosen Focus Adjustment Knob.
Step 7. Move along forward (or back) until beam focus is set as desired
Step 8. Hand-tighten Focus Adjustment Knob to lock position.
See Detail A
Beam Shutters (4 Each)
Focus Adjustment Knob
Beam Focus Adjustment
Beam Distribution Adjustment
Beam Angle
Adjustment Knob
Beam Distribution
Adjustment Knob
Detail A
Y-Axis
X-Axis
Beam Shutters
(4 Each)
Note:
When using high-output, high
performance lamps, it is possible that
a combination of focus, beam angle
and color gel type may result in
reduced gel life. It is advised to use
the 5-inch Gel Frame Extender part
number 18147 (sold separately - see
"LEKO LITE Luminaire Frames /
Gobo Holders / Iris" on page 4
).
Summary of Contents for Leko Lite 11430C
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Page 17: ...Standard Specifications 15 LEKO LITE Luminaires Installation User s Manual Notes ...
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