Long Wave Infrared Static Target Projector (LWIR STP) Specifications
This static target projector is the most recent addition to the Meridian family and has been designed specifically to serve the needs of the burgeoning automotive thermal camera industry. Although the projected object distance is fixed, this projector differs from the visible and NIR products by offering both user configurability and on-board controls.
At the heart of the LWIR STP is an extended blackbody source that may be set to the desired temperature either from a computer over the power+RS485 interface bus, or directly from the three-button interface on the rear panel where the actual source temperature is also displayed. An aperture target at ambient (“background”) temperature mounted in front of this source is collimated by a germanium objective lens. Since the source and target temperatures are both monitored continuously, the source temperature control mode may be set to either absolute or differential behavior.
A key feature of the LWIR STP is that both collimator barrels and target assemblies may be interchanged, enabling the user to configure the projector according to the camera type to be measured.
As is the case with the visible and NIR STP family, an array of LWIR STPs may optionally be configured by Optikos in a Starfield mount at field angles specified by the customer.
When sold individually, LWIR STPs are usually shipped with the following accessories:
- USB Interface box and 36VDC power adapter for establishing RS-485 + power bus
- USB Cable for computer connection
- 3-Meter long power + RS-485 bus cable from LWIR STP to interface box
- Benchtop cradle stand
- Thumb drive with demo control application, manual, and instruction set documentation
| Specifications | |
| Nominal Focal Length *other options in development |
127mm |
| Clear Aperture (mm) *other options in development |
33mm |
| Maximum Standard Target Pattern Diameter (mm) | 25mm |
| Mechanical boresight (°) | <0.25° (for targets with defined center features) |
| Target options | Orthogonal crossedge (standard)
Predistorted crossedge Single edge Crosshair |
| Source Temperature | Ambient to 90°C |
| Interface bus | RS485 (9600 baud), 36VDC |
| Power Supply Input Voltage | 100 to 240 VAC |
| Operating Temperature | 10-30 °C |
| Operating Humidity | 30-70% (non-condensing) |
