Checks whether the optional Coating attribute is present.
This field records the Coating Material used to increase the photoelectric properties of the metallic cathode used in this Detector. The coating releases electrons much more readily than the underlying metal, allowing it to detect the low-energy photons in infrared radiation. The lens transmits the radiation from the object being viewed to a layer of coated glass. The photons strike the metal surface and transfer electrons to its rear side. The freed electrons are then collected to produce the final Image.
Returns:
| Type |
Description |
boolean
|
true if the optional attribute has been set, false otherwise
|