KEYWORDS: Integrating spheres, Light, Collimators, Night vision, Reliability, Light sources, Transmittance, Objectives, Night vision systems, Control systems
Low-light level night vision device must be assessed by light stress reliability test in the design approval testing and
production approval testing. The low-light level stress environment is the key to light stress reliability test on
Low-light level night vision device. This paper studies the actual working environment of Low-light level night
vision device from the aspects of night sky spectrum of nature light and illumination, and designs a low-light level
stress system. The system consists of double-integrating-sphere light source, light stress automatic switching device,
collimator, monitoring and control system for light stress. The system uses a total light source with radiation
structure to improve the light efficiency, solve the question of light stress consistency, achieve a typical night-day
simulation of the environment and the monitoring and control of the whole process.
Portable CCD size detecting system is characterized by non-contact measuring and convenience for use, and can be
operated in the spot where surroundings is complex and inaccessible. Based on the introduction of operation
principle of portable CCD size detecting system and analysis on various factors which affect measuring accuracy,
this paper presents several measures for improvement of detecting accuracy, such as imaging with narrow field of
view, data acquisition by laser ranging, minimal value acquisition by manual scanning, automatic adjustment of
exposure time of CCD, etc. Detecting accuracy of system is improved.
This paper presents a three-dimensional video laparoscopy is component binocular stereo endoscope optical system,
dual-CCD imaging system and time-division stereo display system, it apply the dual-optical path imaging system, timedivision
a stereo display system to make the image refresh frequency achieve 100 Hz, the image without blinking and
achieve the required of real-time stereo display in minimally invasive surgery . The system can be used in minimally
invasive surgery, and also can be applied to hole detection technology.
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