Optimised custom optical systems are designed by Resolve Optics for hostile environments where radiation, extremes of temperature / pressure, high levels of vibration / shock or contact with corrosive liquids and gases would render standard products unusable. For high-temperature environments optical systems are offered that will operate up to 950°C without cooling. For radioactive environments the custom lens systems and through wall endoscopes are capable of withstanding radiation doses of up to 100,000,000 rads without degradation of performance. For defence and aerospace applications - Resolve Optics has developed compact optical systems that uniquely combine high performance, resistance to ingress of dirt and moisture as well as maintaining their integrity despite being subject to constant vibration and shock. The lenses can not only withstand harsh environments but also offer greater resolution; large apertures to ensure the maximum use of the light available; wide fields of view with little or no distortion; optical designs and coatings that are balanced to give best performance at a desired wavelength or waveband and compactness as space is often at a premium.