Compare Model Drawings, CAD & Specs Availability Price
Integrating Sphere, 4-Port, 3 in. Diameter, Diffuse Gold Coating
$2,433
In Stock
In Stock
Integrating Sphere, 4-Port, 4 in. Diameter, Diffuse Gold Coating
$2,533
3 Weeks
3 Weeks
Integrating Sphere, 4-Port, 6 in. Diameter, Diffuse Gold Coating
$3,950
3 Weeks
3 Weeks
Integrating Sphere, 4-Port, 5.3 in. Diameter, PTFE, 2.5 inch Port Plug
$2,774
In Stock
In Stock
Integrating Sphere, 4-Port, 4 in., Barium Sulfate, 0-Deg 1.5 in. Plug
$1,848
In Stock
In Stock
Integrating Sphere, 4-Port, 6 in., Barium Sulfate, 0-Deg 2.5 in. Plug
$2,060
1 Week
1 Week
Integrating Sphere, 4-Port, 2 in. Diameter, PTFE, 0-Deg 1 in. Plug
$1,795
In Stock
In Stock
Integrating Sphere, 4-Port, 3.3 in. Diameter, PTFE, 0-Deg 1.5 in. Plug
$2,199
1 Week
1 Week
Integrating Sphere, 3-Port, 3 in. Diameter, Diffuse Gold Coating
$2,262
In Stock
In Stock
Integrating Sphere, 3-Port, 4 in. Diameter, Diffuse Gold Coating
$2,478
In Stock
In Stock
Integrating Sphere, 3-Port, 6 in. Diameter, Diffuse Gold Coating
$3,885
In Stock
In Stock
Integrating Sphere, 4-Port, 5.3 in Diameter, PTFE, 1 inch Frame Reducer
$2,885
Integrating Sphere, 3-Port, 4 in. Diameter, Barium Sulfate, 1 in. Port Reducer
$1,870
1 Week
1 Week
Integrating Sphere, 3-Port, 6 in. Diameter, Barium Sulfate, 1 in. Port Reducer
$1,983
In Stock
In Stock
Integrating Sphere, 3-Port, 2 in. Diameter, PTFE
$1,651
In Stock
In Stock
Integrating Sphere, 3-Port, 3.3 in Diameter, PTFE, Inc. 1 in Port Reducer
$2,307
In Stock
In Stock

Features

819C Series 4 Port Spheres

When selecting the right sphere for you, consider your application. A sphere port adds functionality to the sphere, but at the same time, diminishes the uniformity of the light distribution inside the sphere. The 819C Series is a 4 port spheres, at 0, 90, 180 degree, and on the north pole, with the various sizes between 2 inches and 6 inches. The baffle is located between the 0 and the 90 degree port. Note that some spheres are shipped with a port plug at the 0 degree port.

819C 4-Port sphere port locations. Note that a 2' inch sphere shell is cubic.

819D Series 3 Port Spheres

The 819D Series 3 port spheres (except for 819D-IS-5.3) feature ports at 0, 90 degree, and on the north pole, with the various sizes between 2 inches and 6 inches. The baffle is located between the 0 and the 90 degree port. Compared with 819C series, the 819D series provides a better integration of the light input. Note that some spheres are shipped with a 1 inch port reducer at the 0 degree port.  Note that 819D-IS-5.3 is a four port system but comes with a port reducer at the 0 degree port and a port plug at the 180 degree port.

819D 3-Port sphere port locations. The 2 inch sphere shell is cubic.

Three Different Sphere Reflective Materials

Newport provides three different types of inner-sphere materials to meet various requirements of users: PTFE (spectralon), barium sulfate (spectraflect), and diffused gold.

Diffused Gold Spheres for IR Applications

Diffuse gold coating is an electrochemically plated, diffuse gold-metallic coating that exhibits high reflectance over the near-infrared and infrared wavelength regions from 0.7 to 20 µm. The gold spheres are constructed in the same manner as the barium sulfate spheres, except that the external flat surface and port frames are gold-plated as well. A gold sphere is well-suited for infrared laser applications. Whereas a barium sulfate coating may lose its reflectance at high temperatures, the diffuse gold remains stable at temperatures well above 100C. The damage threshold is 4 times greater than PTFE. Their reflectance characteristics are superior in longer IR region to the existing barium sulfate or PTFE type integrating spheres, making them an ideal sphere for the mid to far IR applications. High damage threshold and high thermal limit characteristics make the gold spheres a choice for high power applications as well.

Cost Effective Barium Sulfate Based Spheres

The barium sulfate coating has an effective range from 300 nm to 2400 nm, with reflectivity of >97% at 600 nm. It is a cost effective and adequate for most radiation measurement applications. The unmatched environmental stability and high-performance of the Spectralon™ based spheres are derived from their rugged monolithic thermoplastic material and are superior to coated integrating spheres. In addition, their high damage threshold surface can be cleaned with distilled water.

PTFE Based Spheres for Demanding Applications

Hydrophobic, chemically inert and thermally stable to 350°C, PTFE based 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.

Flat Black Coating

Accessory products are available not only in PTFE, barium sulfate, or gold, but also in Flat Black type coating in some cases. Flat Black type highly absorbs light and is used to imitate an open port, which does not have any reflection, but to reduce introduction of ambient light into the sphere.

An accessory with flat black coating.