JUST Desktop Color Matching Light Box - Printing Film Sample Table - Small Transmitting Light Box Product Description:

JUST Desktop Color Matching Light Box - Printing Film Sample Table - Small Transmitting Light Box JUST Classic Line is a transparent desktop color matching light box equipped with D50 light source, and other standard light sources can be matched according to needs. The correlated color temperature is 5000K, which is closer to natural sunlight. The spectral distribution is in the range of 300 to 780nm, and the color rendering index CRI (CIE 13.3) is>90. The same color difference spectral index MIvis<1.0 and MIuv<1.5, with an ultra-high color rendering index Ra>93. Symmetrical optical design is suitable for observation and use from various angles, allowing for continuous and variable dimming, and achieving uniform illumination at any brightness level. It complies with various international standards such as ISO 3664/3668, ASTM D1729, DIN 6173-2, and is particularly suitable for color evaluation of various semi transparent products. The anodized silver plated brushed aluminum shell has a beautifully designed appearance and utilizes ECG technology to achieve flicker free lighting. It offers multiple specifications and sizes, making it an ideal choice for industrial quality control of various semi transparent materials.

JUST desktop color matching light box - printing film viewing table - small transmission light box working principle:

The standardized and reproducible color matching process requires reproducible conditions. Natural light will be a good starting point for defining light quality, but its spectrum will vary over time and location. Therefore, a unified observation condition requires the use of artificial sunlight to create color matching areas, with CIE D65 being the most common in manufacturing.

All JUST color matching light boxes meet the requirements of ISO 3668 for color matching boxes and their lighting:

• JUST LED moduLights or JUST fixtures equipped with JUSTdaylight 6500 proIndustry fluorescent tubes (D65 light source) meet the specified BC quality level
• Illumination within the range of 1000-4000 Lux (depending on the model)
• The overall inner wall can block external light and has a matte, neutral gray surface (Munsell N7)
• Attention: For very bright substrates, the inner wall should be brighter. For very dark substrates, the inner wall should be matte black to reduce contrast between the environment and colored samples. Corresponding inner walls can be provided upon request.
• Diffuse uniform light without light source reflection on colored substrates
• The working hour meter displays when the lamp needs to be replaced to continue meeting the standards

In order to achieve standardized color control, it is necessary to choose D50 lighting for printed materials and D65 for industrial products such as coatings, plastics, varnishes, etc. If it is necessary to detect color or substrate heterochromatic aberration, other lighting/light sources are required. Using JUST color matching light box, users can choose different sizes and quantities of light sources, but should include at least light source D65 and light source A to detect color difference spectra.

JUST desktop color matching light box - printing film viewing table - small transmission light box technical parameters:

Optical parameters

• Light source options:

1. D65，6500K，Ra＞98
2. D50，5000K，Ra＞98

JUST Desktop Color Matching Lightbox - Printing Film Sample Table - Small Transmitting Lightbox Upgrade Options:

• Optional light source (D50/D65)
• Continuous adjustable version available (Classic Line 3/4/7/8)

Optional models:

1 Classic Line 3

• Lighting area (W x D): 52 x 35 cm
• Dimensions (W x H x D): 66 x 8 x 38 cm

2 Classic Line 4

• Lighting area (W x D): 74 x 48 cm
• Dimensions (W x H x D): 76 x 10 x 62 cm

3 Classic Line 7

• Lighting area (W x D): 109 x 35 cm
• Dimensions (W x H x D): 123 x 10 x 38 cm

4 Classic Line 8

• Lighting area (W x D): 109 x 59 cm
• Dimensions (W x H x D): 123 x 10 x 62 cm