Compare Model Drawings, CAD & Specs Availability Price
Integrating Sphere, 4-Port, 2 in. Diameter, PTFE
4 Weeks
4 Weeks
Integrating Sphere, 4-Port, 3.3 in. Diameter, PTFE
Integrating Sphere, 4-Port, 5.3 in. Diameter, PTFE, Port Frame Reducer Included
3 Weeks
3 Weeks



Integrating Sphere for Diverging Beams

The 819D-SL modular integrating sphere bodies feature three ports located at 0 and 90 degrees, and at the north pole. The new 819D-IS series, which will replace the 819D-SL series, has a port at 180 degrees as well but is plugged. The baffle is located between the 0- and the 90-degree ports. We offer a wide variety of integrating sphere accessories that mount to the port frames, allowing the sphere to be customized for multiple applications.

Divergent Beam Integrating Sphere Applications

The 819D-IS series spheres are configured to be suitable for a divergent beam measurement.  A typical configuration has the source beam entering through the 0° port with a baffled detector mounted on the 90° port. Common applications include measuring power of divergent light sources such as laser diodes, lensed LEDs, lensed lamps and lensed fiber. For more details about these applications, please see our Integrating Sphere Fundamentals and Applications tutorial.

Divergent Light Source Power Measurement

PTFE Sphere Material for Demanding Applications

Hydrophobic, chemically inert and thermally stable to 350°C, Optical PTFE based integrating spheres can be used in more demanding environments, including underwater and high or low temperature processes. At the same time, reflectance exceeding 95% from 250–2500 nm, 98% from 310–2100 nm, and 99% from 400–1500 nm make them ideal for even the most demanding measurements from the ultraviolet to the near infrared.

Our integrating spheres are available with Optical PTFE, barium sulfate (spectraflect), and diffused gold sphere materials.

Selecting an integrating sphere size

Among the factors in selecting the size of an integrating sphere is the physical limitation of the measurement setup that will be used. Generally, as the sphere diameter grows, the “integration” property of the sphere improves, the port size can be larger and higher input power can be accommodated. However, with the increasing attenuation of the setup, the throughput will be decreased.

Integrating Sphere Accessories

Newport offers accessories that are compatible with our integrating spheres to build a complete integrating sphere system. Various adapters are available to change port frame diameter, reduce an input port's clear aperture, measure fiber optic power, connect lens tubes and mount sensors. Port plugs to block an unused sphere port are also available.