LG3
Through modern lighting technology, the LG3 creates new possibilities in image laboratories by considerably expanding the test areas for dynamic range measurements. The LG3 is capable of illuminating a high contrast test target with over 150000 lx (for the LG3 to make an exact indication of the intensity on the chart in luminance [cd/m²], a measuring device is required, e.g., PRC Krochmann RadioLux).
As a result, measurements of a high dynamic range are possible with short, practical exposure times. The user can also dim the intensity while the LG3 temperature management ensures that the light CCT (correlated color temperature) does not change.
通過現代照明技術，LG3 大大擴展了動態範圍測量的測試區域，為圖像實驗室創造了新的可能性。LG3 能夠以超過 150000 lx 的亮度照亮高對比度測試目標（LG3 要在圖表上以亮度[cd/m²]準確顯示強度，需要使用測量設備，如 PRC Krochmann RadioLux）。
因此，只需很短的實用曝光時間，就能測量出很高的動態範圍。用戶還可以調暗強度，同時 LG3 溫度管理功能可確保光 CCT（相關色溫）不發生變化。
Another unique aspect of the LG3 is the flicker mode. With this feature, the user can choose between a constant pulse width modulation mode of 32 kHz and variable duty cycle, or the flicker mode with a range of 10 to 500 Hz and variable duty cycle. With the LG3, light sources working with variable frequencies can be simulated, e.g., traffic lights, vehicle, and street lighting. Now cameras in the security and automotive area can be tested and optimized for a wide range of real-life situations.
Its important features are:
- normal mode: 0-100% 32 kHz / 100 to 65000 lx
- low mode: 0-100% 32 kHz / 10 to 6500 lx
- high mode: 100% max. 60s lighting duration / 150000 lx
- variable frequencies
- variable duty cycles
- high homogeneity >95%
- dimmable in fine steps
- a stabilized intensity in a normal and low-intensity mode
- correlated color temperature (CCT) of 5000 K
Via the external control and supply unit, select two illumination methods in three intensity ranges.
- Pulse width modulation PWM
- Flicker mode 10-500 Hz
The standard test chart size for the illumination device is D280 format.
We also offer an LG C++ API (sold separately) that can be used to build an individual measurement environment.
LG3 的另一個獨特之處是閃爍模式。利用這一功能，用戶可以選擇 32 kHz 和可變佔空比的恆定脈寬調制模式，或 10 至 500 Hz 和可變佔空比的閃爍模式。使用 LG3 可以模擬頻率可變的光源，例如交通信號燈、車輛和街道照明。現在，安防和汽車領域的攝像機可以針對各種實際情況進行測試和優化。
其重要功能包括
- 正常模式： 0-100% 32 kHz / 100 至 65000 lx
- 低照度模式 0-100% 32 kHz / 10 至 6500 lx
- 高模式： 100% 最大值 60s 照明持續時間 / 150000 lx
- 可變頻率
- 可變佔空比
- 高均勻度 >95
- 可精細調光
- 正常和低強度模式下的穩定強度
- 相關色溫 (CCT) 為 5000 K
通過外部控制和供電裝置，可在三個強度範圍內選擇兩種照明方式。
脈衝寬度調制 PWM
閃爍模式 10-500 Hz
照明設備的標準測試圖尺寸為 D280 格式。
我們還提供 LG C++ API（單獨銷售），可用於構建個性化的測量環境。
| LG3 | |
|---|---|
| Principle | High-intensity illuminator for transparent charts based on LED technology. Flicker-generation with variable frequency. |
| Output window | rectangular output window, 290 x 220 mm dual slot for D280 sized test charts |
| Light source | 432 LEDs |
| CRI | >90 |
| Color temperature | approx. 5000K +/-5% |
| Uniformity | > 95 % for active chart area*, 280 x 157.5 mm > 95 % (70 mm diameter circle)* approx. 90% at very low Intensity (intensity <1%) |
| Illumination stability | Active illumination stabilization Relative illumination stability > 98 % |
| Illumination feedback inaccuracy | +/-2%** |
| Maximum / Minimum illumination level | 10-150000 lx*** |
| Dim function | integrated control over display and rotary knob with approx. 5000 steps in 3 modes feedback of illumination level in [%] and illuminance [lx] 32 kHz PWM |
| Flicker Function | 10-500 Hz 1-99% variable duty cycle |
| Power supply / consumption | 110 V / 230 V, 250 W |
| Dimension lighting unit [W x H x D] |
590 x 470 x 120 mm |
| Dimension control unit [W x H x D] |
150 x 80 x 270 mm |
| Weight | approx. 10 kg |
| Optional | device tripod and remote holder C++ API |
*Measured on chart plane
**Absolute inaccuracy is dependent on the inaccuracy of the used calibration device
***Absolute intensity range is dependent on the inserted chart
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