Transcript Side Turn Design Large Trucks

USER CONFERENCE 2014
APRIL 28, 2014
SIDE TURN SIGNALS FOR
LARGE TRUCKS
Sandeep Saxena
Optical & Advanced Engineering
SAE SPECIFICATION
INTERPOLATING LID
RECREATING SYMMETRICAL LID
38 X 1/0.5 X 1.25 = 95 LUM
FLAT LENS EFFECT
PS Applications
RISK AREAS
• ZONAL VALUES OK
• WIDE ANGLE TEST
POINTS
• SIDEMARKER
FUNCTION??
MACRO FOCAL APPROACH
KEY POINTS
• LAYOUT OF
REFLECTORS
• TOOLING
CONSIDERATIONS
• SURPRISE ELEMENTS
DESIGN STRATEGY
1
2
3
4
5
6
3
5
1
6
2
4
18 Lumens
per LED
considered
after ALL
losses
LED: NICHIA
SIDE TURN INDICATOR
SIDEMARKER AT 1/7th INTENSITY
SIMULATION VS ACTUAL PERFORMANCE
ECE CATEGORY 6
DIRECTION INDICATOR
GEOMETRY
60 DEGREE
0 DEGREE
DESIGN STRATEGY
B
A
C
LIGHT COLLECTION FROM AREA “A”
LIGHT COLLECTION FROM
“B & C” AREAS
OPTICAL SURFACES INTEGRATED IN CAD MODEL
20lum/LED with
Optic free lens