A Design of Mid-wave Infrared Integral Catadioptric Optical System with Wide FOV

Yu, Lin Yao; Jia, Hongyu; Wang, Qun; Jiang, Hu Hai; Zhang, Tian Yi; Wang, Chao

doi:10.3807/josk.2013.17.2.142

Journal of the Optical Society of Korea

2013

DOI: 10.3807/josk.2013.17.2.142

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A Design of Mid-wave Infrared Integral Catadioptric Optical System with Wide FOV

Lin Yao Yu¹,

Hongyu Jia²,

Qun Wang³

et al.

Abstract: In order to deduce the difficulty of fixing the Ritchey-Chretien (R-C) dual reflective optical system and enhance the stability of the secondary mirror, a compact integral structure is presented here composed of two transmitting and two reflective aspheric surfaces. The four surfaces were manufactured from a single germanium lens and integrated together. The two reflective surfaces formed by coating the inner reflecting films were assembled in one lens. It makes the installation of the two mirrors easier and t… Show more

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Cited by 3 publications

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Power set of stigmatic freeform catadioptric systems

Acuña¹

2023

Appl. Opt.

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A method to design catadioptric systems from scratch based on optimizing an element of the power set of stigmatic catadioptric systems is presented. This set contains all possible stigmatic catadioptric systems. The deduction of the set is also presented in this paper, and its derivation is totally analytical. Additionally, an illustrative example of optimization of an element of the mentioned set is presented. The results are as expected.

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Power set of stigmatic freeform catadioptric systems

Acuña¹

2023

Appl. Opt.

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Parameterized Modeling of Spatially Varying PSF for Lens Aberration and Defocus

Wang

Chen

Jia

et al. 2015

Journal of the Optical Society of Korea

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Image deblurring by a deconvolution method requires accurate knowledge of the blur kernel. Existing point spread function (PSF) models in the literature corresponding to lens aberrations and defocus are either parameterized and spatially invariant or spatially varying but discretely defined. In this paper, a parameterized model is developed and presented for a PSF which is spatially varying due to lens aberrations and defocus in an imaging system. The model is established from the Seidel third-order aberration coefficient and the Hu moment. A skew normal Gauss model is selected for parameterized PSF geometry structure. The accuracy of the model is demonstrated with simulations and measurements for a defocused infrared camera and a single spherical lens digital camera. Compared with optical software Code V, the visual results of two optical systems validate our analysis and proposed method in size, shape and direction. Quantitative evaluation results reveal the excellent accuracy of the blur kernel model.

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Design and Characteristic Measurement of 8000 mm Large Aperture Integrating Sphere

Zhang

Zhi

et al. 2016

Journal of the Optical Society of Korea

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Integrating spheres play a central role in the radiometric calibration of remote sensors. With the development of the wide field of view (FOV) remote sensors, aperture diameters of remote sensors are becoming larger and larger. To satisfy the radiometric calibration requirements of full FOV and full aperture, an 8000mm diameter large aperture integrating sphere uniform source with a variable exit port was designed and manufactured. This integrating sphere will be used for pre-launch test and radiometric calibration of remote satellites. In this paper, optical theories were used to design the output spectral radiance. The LightTools software based on ray-tracing simulation method was used to determine the best combination and distribution of inner light sources. A spectral experiment was made to verify the spectral radiance design. To reduce the influence of longtime power-on, a new characteristic measurement method was developed to obtain the radiation characteristic of the integrating sphere, which could greatly improve the measuring efficiency. This method could also be applied to measure other large aperture uniform sources. The obtained results indicate that the spatial uniformity is 98.35%, and the angular uniformity at center position is 98.78%.

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A Design of Mid-wave Infrared Integral Catadioptric Optical System with Wide FOV

Cited by 3 publications

References 4 publications

Power set of stigmatic freeform catadioptric systems

Power set of stigmatic freeform catadioptric systems

Parameterized Modeling of Spatially Varying PSF for Lens Aberration and Defocus

Design and Characteristic Measurement of 8000 mm Large Aperture Integrating Sphere

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