The spherical illuminators work on the principle of an integrating sphere.
A light source illuminates the interior of a sphere which is coated with a special white diffuse coating. A plane （measuring window） which usually needs to be small compared to the diameter of the sphere and oriented perpendicular to the incident light is illuminated extremely uniform. Due to our internal design the measuring window can be much bigger.
A special construction allows to dim the light down to approx. 1% of the maximum illumination without changing the color temperature. The color temperature is 3200 K +/- 50 K. Different filters to change the color temperature are available as well as a 50 W and a 100 W version.
LE6-S is a cheaper, not dimmable version of LE6-50 with constant illuminance of approx. 3000 - 5000 Lux.
The standard test chart size for the illuminators is our D280 format. D240S has the same slide format but a smaller picture format. Therefore it fits without an adapter. For the chart sizes D240 and D205 adapters are available. For the illuminators LE6 an USB interface is available as an option.
So the light intensity can be measured and controlled by a Windows PC. Download data sheets and manuals:
 .LE6-50 data sheet.......LE6-100 data sheet.......LE6-100 S data sheet. .LE6 user manual.......ユーザーマニュアル
| | LE6-50
| LE6-100
| LE6-S
| Principle
| Integrating sphere
| Integrating sphere | Integrating sphere | Light source
| 12 V / 50 W halogen bulb
| 12 V / 100 W halogen bulb | 12 V / 50 W halogen bulb | Color temperature
| 3200 K +/- 50 K
| 3200 K +/- 50 K | 3200 K +/- 50 K
| Illuminance of test charts
| > 3000 Lux | > 8000 Lux | > 3000 Lux
| Uniformity of illumination
| > 96% | > 96% | > 96% | Display
| LCD display showing illuminance （Lux） on test chart
| LCD display showing illuminance （Lux） on test chart
| -
| USB interface （optional）
| +
| + | - | Dimmable
| 1-* of max. illumination
| 1-* of max. illumination | not dimmable | Integrated
illuminance meter
| + | + | - | Remote control
| +
| +
| -
| Tripod
| +
| +
| +
| Hight of chart center
| 440 mm （table）
1300-1800 mm （tripod）
| 440 mm （table）
1300-1800 mm （tripod）
| 440 mm （table）
1300-1800 mm （tripod）
| Power input
| 80 W / 90-260 VAC
50/60 Hz | 120 W / 90-260 VAC
50/60 Hz | 80 W / 90-260 VAC
50/60 Hz | Weight
| 11 kg
| 11 kg | 11 kg
| Dimensions
| 630 x 710 x 488 mm
| 630 x 710 x 488 mm
| 630 x 710 x 488 mm
| Filters [K]
| filters from 2500 K - 6500 K are available |
| 
