Sorgenti di luce uniforme
 

BN-ULS-M Series: Spectral Radiance, Luminance and Uniformity Standards
The BN-ULS-M Series radiance, luminance and uniformity standards offer the utmost flexibility in constructing a system to individual customer requirements. The design concept is based on providing the highest possible level specifications without adding more than is needed. This modular approach gives the customer exactly what he requires without the added cost of unnecessary parts.

Integrating Spheres with different diameters from 4 in. (100 mm) up to 67 in. (1700 mm), form the base units for each set-up. The main selection criteria for determining the sphere size is how big the light emitting port must be. A rule of thumb for the maximum acceptable port diameter is no more than 5 % of the total sphere surface area including detector and lamp ports.

How high a luminance output is required is the only selection criteria for small diameter spheres.

A wide range of Sphere Accessory Components support configuration of the basic sphere. In-stock status of all items limits the delivery time of the spheres to the time of assembly.

BN-ULS-300 with external lamp and remote controlled filter wheel

Standard bench-top Sphere Stands are constructed using modular aluminum rails that can be easily customized to the individual application.
Port Frames with free aperture diameters from 0.5 in. (12.7 mm) up to 5 in. (127 mm) provide the foundation for all accessory components assembled to the sphere.

Two different kinds of light sour¬ces are available for assembly onto the port frames:
Internal Sources are positioned inside of the sphere. The advantage of this type of light source is that all of the luminous flux is emitted inside the sphere offering the highest possible light intensity. Baffles are required to block direct illumination of the light exit port by the internal lamp. The resulting losses in uniformity and acceptance angle can be reduced by the use of multiple internal lamps.
External Sources are directional lamps which transfer their luminous flux through a sphere port into the sphere. The advantage of this type of light source is the ability to place light manipulators like iris diaphragm attenuators, optical filters and fast shutters into the light beam. The restriction with this light source is the lower light intensity. Gigahertz-Optik’s unique lamp design employing a diffuse reflector offers high luminous flux efficiency combined with a diffuse light input into the sphere. In combination with its diffuse-baffle, light uniformities equal to that of satellite sphere light sources are achieved at higher light intensities.

BN-ULS-300 with 4 external lamps

All available components for the construction of standard light source systems are described and specified in the Integrating Spheres section.

Internal Light Sources

External Light Sources:  

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