Optical System Design of High-Precision Static Star Simulator

In order to satisfy the high－precision technical requirements of static star simulator, according to the optical design characteristics of traditional star simulator, the paper designed a collimating objective optical system with little distortion, flat field apochromatism, made the simulated star chart by parallel light exit, on the entrance of star sensor produced star chart, and realized the static star simulator could simulate star accuracy static star simulator. This system is designed by four lenses, effective aperture is 20mm, and focal distance is 190.84mm. By imaging quality analysis it shows that in the angular field of view 6°×6°, the relative distortion of collimating objective optical system is less than 0.01%, MTF at 40lp/mm reached 0.6, and has higher imaging quality. It proves that the optical system meet the design requirements.

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Optical Design of Improved Offner Imaging Spectrometer

Journal of Physics Conference Series ◽

10.1088/1742-6596/2112/1/012007 ◽

2021 ◽

Vol 2112 (1) ◽

pp. 012007

Author(s):

Chong Song ◽

Yong Huang ◽

Yangdong Yan ◽

Dongsen Cui ◽

Gang Wang ◽

...

Keyword(s):

Optical System ◽

Optical Design ◽

Annular Region ◽

Practical Application ◽

Imaging Spectrometer ◽

Imaging Quality ◽

Lens Position ◽

Operating Wavelength ◽

The Stability ◽

System Characteristics

Abstract An improved Offner imaging spectrometer was proposed based on the optical system characteristics of Offner imaging spectrometer, which can ensure perfect imaging quality in a wider annular region. The operating wavelength of the improved Offner imaging spectrometer ranges from 900nm to 1700nm, and the magnification is 1. Improved Offner imaging spectrometer can be obtained by changing the meniscus lens position and further optimizing the design. The results indicate that the improved Offner imaging spectrometer can effectively improve compactness and lightweight, and reduce the difficulty of optical adjustment, which is conducive to the stability of practical application.

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Influence of Inhomogeneity of Optical Glass Used in High-precision Optical System on Imaging Quality

ACTA PHOTONICA SINICA ◽

10.3788/gzxb20134204.0451 ◽

2013 ◽

Vol 42 (4) ◽

pp. 451-455

Author(s):

刘洋舟 LIU Yang-zhou ◽

李晓彤 LI Xiao-tong ◽

岑兆丰 CEN Zhao-feng ◽

许伟才 XU Wei-cai ◽

尚红波 SHANG Hong-bo ◽

...

Keyword(s):

High Precision ◽

Optical System ◽

Optical Glass ◽

Imaging Quality

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Structure Analysis and Design of Automobile plastic clutch pump body based on friction welding

MATEC Web of Conferences ◽

10.1051/matecconf/202031602001 ◽

2020 ◽

Vol 316 ◽

pp. 02001

Author(s):

Jing Sheng ◽

Aamir Sohail ◽

Mengguang Wang ◽

Zhimin Wang

Keyword(s):

High Temperature ◽

Structural Design ◽

Friction Welding ◽

Room Temperature ◽

Welding Process ◽

Structure Type ◽

Mechanical Analysis ◽

Analysis And Design ◽

Technical Requirements ◽

Design Requirements

In order to realize the need for lightweight automobiles through replacing steel with plastics, the research and development of the plastic clutch pump body based on the friction welding was carried out. For the clutch pump body connected by friction welding process between the upper pump body and the lower pump body, the technical requirements of pressure 14 MPa and durability (high temperature 7.0 × 104 times, room temperature 7.0 × 105) are required. The structure type of the upper and lower pump bodies of the end face welding type was proposed. Through the static analysis of the pump body and weld and the mechanical analysis under the working condition, the structure of the clutch pump body (upper and lower pump body) was determined. According to the established welding process, the pressure of the clutch pump body is more than 15 MPa, and the number of high-temperature durable circulation and the number of room temperature durable circulation also reached 7.2×104 and 7.3×105 times respectively. The results show that the structural design of a clutch pump body meets the design requirements.

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Optical system alignment technology based on high-precision surface error reduction

Seventh Symposium on Novel Photoelectronic Detection Technology and Applications ◽

10.1117/12.2587446 ◽

2021 ◽

Author(s):

Chunyu Wang ◽

Yang Huang ◽

Cong Wang ◽

Jinchuan Niu ◽

Yinglong Zhao ◽

...

Keyword(s):

High Precision ◽

Optical System ◽

Error Reduction ◽

Surface Error

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Optical Design of a Shortwave Infrared Dual Camera CASSI Based on Improved Offner-Wynne Imaging Spectrometer

Journal of Physics Conference Series ◽

10.1088/1742-6596/2112/1/012021 ◽

2021 ◽

Vol 2112 (1) ◽

pp. 012021

Author(s):

Chong Song ◽

Lipeng Huo ◽

Yong Huang ◽

Yangdong Yan ◽

Gang Wang ◽

...

Keyword(s):

Optical System ◽

Imaging System ◽

Optical Measurement ◽

Focal Length ◽

Optical Design ◽

Optical Transmittance ◽

Coded Aperture ◽

Visual Axis ◽

Imaging Spectrometer ◽

Shortwave Infrared

Abstract Based on the optical system characteristics of coded aperture snapshot spectral imager (CASSI), an optimized optical system of shortwave infrared dual camera CASSI was designed based on improved Offner-Wynne imaging spectrometer. The operating wavelength of the optical system ranges from 900nm to 1700nm, and the focal length is 1200mm. It consists of two parts: the two dimensional imaging system and the multispectral CASSI imaging system. The key technical parameters of the two parts are the same and there is no visual axis difference. Therefore, the optimized optical system can effectively improve real-time performance, optical transmittance and compactness of the dual camera shortwave infrared CASSI, which is conducive to the application in optical measurement scenes in the shooting range.

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Design and Experimental Investigation on Gas Oxygen/Kerosene Ejector Rocket for RBCC Application

Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University ◽

10.1051/jnwpu/20183630558 ◽

2018 ◽

Vol 36 (3) ◽

pp. 558-564

Author(s):

Xianggeng Wei ◽

Fei Qin ◽

Lei Shi ◽

Baoqing Zhang ◽

Guoqiang He

Keyword(s):

Working Conditions ◽

Rocket Engine ◽

Combined Cycle ◽

Engine Test ◽

The Core ◽

Technical Requirements ◽

Core Components ◽

Design Requirements ◽

Working Parameters ◽

Firing Tests

The ejector rocket is one of the core components of the rocket based combined cycle propulsion system, and must be capable of variable working conditions. In order to meet technical requirements for RBCC application, the variable duty operating ejector rocket using the gas Oxygen/Kerosene was designed based on the gas pressurized propellant feed systems. Hot firing tests of four different working conditions had been completed. Experimental results show that the designed ejector rocket engine was stable and reliable, and the working parameters met the design requirements, and the working conditions were adjusted quickly. It lays a foundation for the study of the RBCC engine test and the engine technology of large adjustment ratio.

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