LMK 6 影像式輝度計

LMK 6 影像式輝度計是 TechnoTeam 的亮度測量相機，可作為獨立的測量設備用於多種用途。它體積小巧、重量輕，幾乎可以應用於任何光照測量場景。作為 TechnoTeam 的核心產品之一，它也被應用於我們其他基於相機的測量系統中。LMK 6 目前提供三種不同尺寸影像感測器的型號。 LMK 6 配備了 V(λ) 適配光譜濾光片玻璃，其光譜響應與標準 CIE-Y 函數高度吻合，確保測量結果能夠反映人眼對亮度的感知。

LMK 6 影像式輝度計特點

每個LMK的單獨校準
高對比測量的額外校準
多種鏡頭，並可自訂設定
尺寸和重量
高透射率光譜匹配玻璃濾光片
可選的優化雜散光抑制

LMK 6 影像式輝度計系列規格

	LMK 6-5	LMK 6-12	LMK 6-30
Sensor - imaging CMOS matrix system	2464 × 2056 Pixel Sony-CMOS [IMX 250; 2/3" diagonal; 12 Bit digital]	4112 × 3008 Pixel Sony-CMOS [IMX 253; 1.1" diagonal; 12 Bit digital]	6480 × 4860 Pixel Sony-CMOS [IMX 342; APS-C; 12 Bit digital]
Housing dimensions without lenses (H×W×D)	stable black anodized aluminum housing: 80 mm × 80 mm × 47 mm	stable black anodized aluminum housing: 80 mm × 80 mm × 47 mm	stable black anodized aluminum housing: 90 mm × 90 mm × 70 mm
Weight	camera housing without lens: 600 g available lenses: 120 g - 800 g	camera housing without lens: 600 g available lenses: 120 g - 1100 g	camera housing without lens: 780 g available lenses: 120 g - 1100 g
Data interface	Gigabit Ethernet Interface (GigE)
Dynamic range	Single picture measurement: 1:1100 (~ 61 dB) High-Dynamic measure (exposure bracketing series): 1:10 000 000 (~140 dB)
Spectral matching¹	Matched to the V(λ) luminance function for luminance measurement with a full-glass filter
Metrological specification
Measuring quantity	Luminance: L (cd/m²)
Measuring range³	Integration/exposure time from 100 µs to 15 s 1 ms ≈ max. 10 000 cd/m² 3 s ≈ max. 3.3 cd/m² The detection limit4 (f3,0) for all integration/exposure times is about 0.04 % relative to the given maximum luminance value. Higher luminance can be measured using optional neutral density filters.
Calibration uncertainty⁵	fix focused lenses ∆L [ < 2% ] focusable lenses ∆L [ < 2.5% ]
Repeatability⁶	∆L [ < 0.1% ]
Measuring accuracy	∆L [ < 3% ]for standard illuminant A
Uniformity⁴

1 Typical average result for entocentric lenses, specific results available with calibration certification or on request
2 Spectral mismatch f‘1 according to ISO/CIE 19476:2014
3 The luminance value stands for the measuring range end value at the specified exposure/integration time
4 Definition and measurement according to CIE 244:2021
5 Measurements according to CIE 244:2021 using a luminance standard traceable to the PTB (Physikalisch-Technische- Bundesanstalt, the National Metrology Institute of Germany)
6 Measurement performed on a stabilized white LED light source L=100 cd/m² – mean value over 100 × 100 camera image pixel