IES LM-79 Clause 9.1.2 requests the 4π geometry and 2π geometry configuration integrating sphere for the LED testing. LISUN developed the photometric integrating sphere with side assistant opening using a-molding technology to meet the requirements. The IS-*MA**C/IS-*MA**P integrating sphere has all of the specification of IS-*MA.

The traditional integrating sphere is assembled by several pieces. LISUN developed A-Molding Technology to produce the sphere. A-Molding integrating sphere will be more round and the test results will be more accurate than the traditional integrating sphere. Please click to learn more about the difference of the traditional integrating sphere and A molding technology integrating sphere.

Specification:
• Painting material of integrating spheres is according to CIE Pub.No.84 (1989) and IES-LM-79 Standard.
• The inernal BaSO4 coating: ρ (λ) ≥0.96 (450nm~800nm) and ρ (λ) ≥0.92 (380nm~450nm)
• Fine diffuse reflection: Reflectance ρ≈0.8 and accuracy of ρ (λ) <1.5%
• Build-in all functional lamp testing jigs: E27, T5/T8/T12 tubes and the testing holder base for LED and other luminaires. All samples under test can be installed both up and down directions in the sphere.
• Power cable, power terminal and auxiliary lamp position are built-in (Auxiliary lamp is optional)
• Power cable, power terminal are built-in. It is convenient to power on the lamp under test
• Two photo detector ports, one optical fiber port and one temperature sensor port are built-in
• Build-in cross laser can help to install the standard lamp and the lamp under test in the center of the integrating sphere (This item is not included for integrating spheres with a diameter less than or equal to 1 meter)

P.S. Other size integrating spheres can be designed according to customer‘s requirement.

LISUN Integrating Sphere – After-sales Frequently Asked Questions (FAQ).
LISUN integrating spheres were in the market for more than 10 years, LISUN engineers service team already summary the most of the After Sales Questions and Answers in the above link. Please read it carefuly, you can solve the most of the problems by yourself if you have some questions while using the instruments. LISUN will be continue to update this pages and more FAQ can be found in this topic link.