Look-up periscope designs work well where headroom is limited, allowing the user to obtain the required field of view without necessarily having to have their eyes at the same height as the lower window of the periscope.
Our first Embedded Image Periscope (EIP) design was developed back in 2010, in response to an urgent operational requirement to replace a display monitor, for which there was no space in the characteristically cramped Driver's position. In this instance, there was sufficient room to accommodate a high quality biocular optical assembly within the EIP unit itself and, as a result, to provide the Driver with the ability to switch between a standard day periscope view and a relaxed view of the digital images generated by a Thermal Camera already mounted on the front of the vehicle. Since the time that this original EIP was designed and entered service, we have worked closely with a number of customers in order to develop a similar solution for a range of other vehicles, including Main Battle Tanks. Each with different periscope configurations, and differing constraints and available space envelopes. For the most extreme examples, we have developed the DMM variant that employs a specialist VGA display that can be deployed only when required, and stowed when not in use.
We also produce a range of Vision Blocks for installation, for example, in the rear doors of Infantry Fighting Vehicles.