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자동차 헤드램프 배광분포 실험실형 측정시스템
실험실형 스크린 광도계(BV Room)
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LMK를 이용한 Indirect 방식의 헤드램프 측정 시스템
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Direct 방식과 연계한 통합시스템 구현
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광학적 이미지 프로세싱을 통해 측정거리(Photometric Distance)를 크게 줄여 광원의 병렬적 광선(Ray) 범위를 하나의 초점면(Focal plane)으로 이미지화
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기존 측정 시간 30분에서 10초 이내로 측정 시간 감소
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기존 25m에서 10m로 측정 거리 축소하여 유럽 및 북미 법규측정(ECE/SAE)따라 합/불 판정
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Photometric(휘도, 조도, 광도, 광속 등), Colorimetric(색도, 색차 등) 측정
Product
BV ROOM
Geometrical dimension
Depends on the room size and photometrical limiting distance
Size of the measurement object
any; depends on the photometrical limiting distance and
the corresponding size of the measuring room
Interface
Gigabit Ethernet Interface (GigE ®)
Spectral mismatch
V(λ) [f1' < 3.5 %]; X(λ) [f1* < 4 %]
Z(λ) [f1* < 6.0 %]; V'(λ) [f1* < 6 %]
Measuring range
Adaptable by using different integration/exposure times
100 μs - 15 s → approx. 1 Mcd down to 1 cd
Higher intensities can be measured using optional grey filters
Angular resolution
0.01º to 0.1º
Typical image field
±17º hor.; by ±8.5º vert. for a 10 m room
±32º hor.; by ±17º vert. for a 3.16 m room
The horizontal image field can increased by using
the motor unit of our measuring table.
Calibration uncertainty
Focusable lens ΔL [< 2.5 %]
Repeatability
ΔL [< 0.1 %]; Δx,y [< 0.0001]
Measuring accuracy
ΔL [< 3 %]; Δx,y [< 0.0020]
Uniformity
ΔL [< 3 %]
Measurable contrast
Common 1:1,000 with measurement conditions according to
CIE TC2-59 Draft characteristic f25
BV ROOM Measurement object
Basic technical data
Automotive
General lighting
Size of the device under test
< 2 m
< 2 m
Typical measuring distance
3.16 to 25 m
1 to 3 m
Object field
hor. ±90º by vert. ±22º (3.16 m) hor. ±90º by vert. ±8.5º (10 m)
hor. ±180º by vert. ±90º depending on size of laboratory and positioning system
Resolution
0.005º to 0.05º
0.1º
Measuring range
0.01 cd to 10 10 Mcd
0.01 cd to 10 Mcd
Measurable contrast
1: 10,000
1: 1,000
Measuring time
seconds to minutes
seconds
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