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1000\V HALOGEN BIFOCAL SPOT
The unique Rank Strand luminaire
providing, simultaneously, soft,edge and
hard-edge beam shaping, or alternatively
all soft or all hard edges. The ability to mix
edge qualities allows precise cut-off on
one or more sides of the beam with the
remainder shaped, but soft, to merge into
adjacent beam patterns. The beam quality
is also adjustable from a peaky distribution
to a flat field The medium angle spread is a
22° maximum circle to suit the majority of
front-lighting applications; for throw
distances less than about 9 metres the
spread can be increased to 30°, or an extrawide 38°, by the addition of a
supplementary lens to an internal, slot-in
mount Unlike the original Bifocal spots,
there is no significant reduction in optical
performance when mixed edge qualities
are not required and the rear of the two sets
of beam shaping shutters are used for a
straightforward Profile spot
The fully integrated housing, with full length
ventilation slots, also includes a removable
lamptray, gate runners for an iris diaphragm
accessory, lens movement, and internal
colour frame runners with a swing safety
catch. A grab handle is fitted at the rear
Zl 031 OT
Order Codes
T-Spot 64 Bifocal Spot, 22° maximum
90 x 430mm supplementary lens
to increase beam spread to 30°
maximum
90 x 230mm supplementary lens
to increase beam spread to 38°
maximum
1000W 240v Class T
lamp 23,000 lm, 750 hr av. obj. life
/11 Halogen
21031 OT
27 77701
27 64409
34 206 14
295mm
Dimensions
Scale: 1:10
Weight
10kg
Carton size 645 x 310 x 300mm
Packed weight 12.5kg
4 mm
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21 031 OT
Performance
Typical performance, based upon
1000W 240v Class T /11 calibrated lamp,
C.13 filament, 23,000 lm
Maximum circle, hard-edge focus
Cut-off angle 22° maximum
Peaky field adjustment:
V2 peak angle 12° maximum
85,000 peak candela (cd)
Flat field adjustment:
V2 peak angle 18° maximum
55,000 peak candela (cd)
2500
2000
Peak
Lux
1500
1000
500
0 2m 4m
Throw Distance in metres
.... v
/
Wide Angle Performance
1. With reversal of T64 front lens and
addition of 90
Maximum circle, hard-edge focus
Cut-off angle 30° maximum
Peaky field adjustment:
V2 peak angle 16° maximum
58,000 peak candela
F1at field adjustment
V2 peak angle 25° maximum
34,000 peak candela
2. With reversal of T64 front lens and
addition of 90 x 230mm supplementary lens.
Maximum circle, hard-edge focus
Cut-off angle 38° maximum
Peaky field adjustment :
V2 peak angle 21° maximum
44,000 peak candela
F1at field adjustment:
V2 peak angle 28° maximum
32,000 peak candela
x 430mm supplementary lens .
Peaky Distribution
100,000
80,000
60,000
cd
40,000
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20,000
0 5° 10° 15°
Degrees from axis
100,000
Flat Distribution
80,000
60,000
,.. __
cd
40,000
20,000
0 5° 10°
Degrees from axis
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The Company reserves the nght to make anJ
vanat:Ion m design or construct:Ion to the
equipment descnbed
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!Orn 12m
____ F1at field
___ Peaky field
5m
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Specification
Housing
Pressed steel housing integrating both
lamphouse and long-travel lens movement
within the same overall section and
incorporating full length , baffled ventilation
slots. Heat-resisting grab handle fitted to rear:
Fork
Mild steel , reversible, with 90mm dia. friction
disc each side and a handgrip knob for tilt
clamp . Alternative tilt pivot position behind the
gate . Fork threaded and supplied with
Whit. bolt, washers and wingnut for suspension
and swivel clamp.
Lamptray Assembly
GX.9.5 2-pin lampholder, with integral heatsink, mounted on removable assembly normally
secured by two slotted fasteners with removable
toggles . Assembly includes locating tongue,
ducted ventilation, peaky /flat field external
adjustment and porcelain tenninal block , in
external shroud, fitted with lm external length of
3 x l.5mm
insulated and sheathed flexible cable secured
by a strain-relief gland
2
conductm; toughened silicone rubber
Reflector
160mm dia. faceted ellipsoidal reflector of
polished anodised aluminium.
Gate Assembly
Two separate sets of four steel alloy beamshaping shutters with heat-resisting , serrated-
edge knobs with recessed fixing. Top-access
gate rurmers for addition of drop-in iris
diaphragm accessory.
Lens
150 x 230mm piano-convex lens in internal long
travel lens mount, moved and locked in a fully
baffled slot, by a single heat-resisting handgrip
knob.
Colour Frame
Double internal runners with swing safety catch ;
one 165mm square colour frame supplied for
'Cinemoid' sheet or thin-film 'Chromoid'. Flat
front of housing also has thread -inserts for add on colour change accessories .
Finish
High temperature staved texture black
Lamps
1000W max. GX.9.5 (2-pin) base . 55mm l.c.l. with
40mm max. dia. quartz envelope . Class T/11
Halogen recommended for stage use.
Accessories
165mm2 lens guard, 25mm mesh
12-leaflris Diaphragm
Net weight 0.2kg
Additional Lamptray Assembly
Net weight 0. 7 5kg
90 x 430mm extra lens
90 x 230mm extra lens
Additional Colour Frame
Net weight 0.2kg
Travelling Light (Birmingham) Ltd.
177 Rookery Road
Birmingham 821
9QZ
021-523 3297
V2 -in
27 88502
23 77513
27 795 13
27 777 01
27 64409
27 792 17
2389007
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