A multispectral imaging system is responsive to two or more distinctly different electro-magnetic wavebands or spectrums.
This technology is used in satellite and deep space exploration, earth sciences, defence and medicine to name a few.
Portable multispectral systems for use in observation and target acquisition have both a night vision channel in the visible to near infrared (0.4µm – 1µm) spectrum, and a LWIR/thermal (8µm – 14µm) channel. The two images are overlaid or fused into a single monochrome or psuedo-colour image. While fusion technology is useful, the device is usually limited by the the performance of the night vision channel. High-end devices use a high performance Generation 3 night vision tube, while lowend devices use digital night vision. These systems are designed for night use and do not offer colour imaging in daylight
Colour glorious colour
Pulsar have developed multispectral imaging to deliver a high quality colour image for use in daylight, with a thermal image that is useable in all conditions. Each channel is separate which avoids image degradation, common in fusion systems. Instead, each image channel can be viewed independently, or simultaneously via picture-in-picture. Toggling between the two channels is easy using a single button. A colour image improves object and target identification, trophy assessment and foreground obstacles, whilst the thermal channel is effective in darkness, mist and foliage.
Pulsar Thermion Duo DXP50
The new Thermion Duo DXP50 is Pulsar’s first full colour/thermal product with more to be released in the future. The Thermion Duo combines the advantages of a daylight telescopic sight with those of a thermal rifle sight, providing a hunter or pest controller with the best of both worlds.
The colour channel uses a high performance 4K CMOS 3840×2160 colour sensor with a f17 precision ground hyperfocal objective lens that, like a daylight riflescope, requires no focussing. The image is adjustable for brightness and contrast to compensate for varying conditions and is very clear throughout its magnification range. The Thermion Duo has many user functions, such as quick or smooth zoom magnification, video recording, user profiles and point-of-impact distance settings, multiple reticle choices including ballistic/FFP. It is a 21st century development of a daylight riflescope.
The thermal performance of the Thermion Duo DXP50 is the same as the current Thermion 2 XP50 Pro thermal sight. It is fitted with a precision ground f1.0 50mm focal length germanium lens, a Lynred 640×480 <25mK sensor and a 1024×768 AMOLED display. The <25mK NETD sensitivity is the best available in an uncooled focal plane array. Like all Pulsar Thermions, the Thermion Duo is a proven, reliable sight that delivers exceptional performance and easy mounting.
The Thermion Duo DXP50 has a magnification 2x-16x for both thermal and colour channels. Pulsar have also just released the Thermion Duo DXP55 with a colour channel magnification range of 4x-32x. For greater flexibility, both models have indepentent point-of-impact settings.
