title: Novel compact dual-band LOROP camera with telecentricity.
abstract: We report a new dual band compact oblique photography camera (LC11) that is the first to benefit from the incorporation of telecentricity. LC11 has a common front end F/6.6 telescope with 280 mm in aperture that forms its electro-optical (EO, F/7.5) and MWIR (F/5.6) modules. The design allows a substantial reduction in volume and weight due to i) the EO/MWIR compensator and relay lens groups arranged very close to the primary mirror (M1), and ii) light-weighted M1 and SiC main frame (MF) structure. Telecentricity of up to 2 and 0.2 degrees for the EO and MWIR modules, respectively, is achieved by balancing optical power among all lenses. The initial field test shows 0.32 ± 0.05 (EO)/0.20 ± 0.06 (MWIR) in measured MTF at 28 (EO) and 13 (MWIR) cycles/mm in target frequency, and an improved operability with a greater reduction in operational volume and mass than other existing LOROP cameras.
authors.affiliation: Agency for Defense Development, Daejeon 305-152, Korea.
authors.forename: Kwang-Woo
authors.initials: KW
authors.lastname: Park
authors.forename: Jeong-Yeol
authors.initials: JY
authors.lastname: Han
authors.forename: Jongin
authors.initials: J
authors.lastname: Bae
authors.forename: Sug-Whan
authors.initials: SW
authors.lastname: Kim
authors.forename: Chang-Woo
authors.initials: CW
authors.lastname: Kim
authors.forename: Hyug-Gyo
authors.initials: HG
authors.lastname: Rhee
authors.forename: Ho-Soon
authors.initials: HS
authors.lastname: Yang
authors.forename: Yun-Woo
authors.initials: YW
authors.lastname: Lee