In space rendezvous, docking and other high-precision positioning applications, optical imaging system is required to have the characteristics of high resolution, ultra-low distortion and large field of view. Therefore, an aerospa

Based on the large aperture diffraction telescope which is currently being studied, a scheme of optical system for diffraction telescope imaging in visible light range was proposed. The scheme solves the problem of narrow imaging

Fast steering mirror(FSM) with benefits of small dimension, high accuracy, high bandwidth, fast response speed is widely used in optoelectronic systems such as laser communication, image stabilized platform, dastronomical telescop

Environmental perception is a key task of driverless vehicles at night. An improved YOLOv3 network was proposed to realize the detection of pedestrians and vehicles in infrared images captured by driverless vehicles at night. The

Based on the principle of binocular vision, a virtual assembly system of cyber-physical systems (CPS) in augmented reality environment was developed by using Unity3D game engine. The registration relationship between virtual model

With the development of spectroscopy technology, multi-spectral cameras have been widely used in agriculture, medical, machine vision, remote sensing and other fields. This paper proposes a miniaturized four-channel visible-waveba

In order to improve the measurement accuracy of the angle measuring system, based on the characteristics and form of the error, the corresponding mathematical models of the scoring error, photoelectric signal error, eccentricity e

The preparation method of mold based on computer generated holography(CGH) of asymmetric multi-step diffractive optical element was introduced, the working principle and design method of phase-type CGH were studied, the correspond

As the research of coherent imaging (Fourier telescopy) in the procedure from laboratory experiments to the real system, there are many factors that may impact on the realization. However, among the factors and analysis, there has

The ability to obtain fine information of object images through complex media is a major difficulty in photoelectric image acquisition and processing. The complementary metal oxide semiconductor (CMOS) photoelectric image sensor w

In order to realize rapid and simple measurement on micro-topography, an optical detection method using interference illumination of nonparallel light was proposed. In this method,a spatial light modulator is used to diffract the

To meet the requirement of high-resolution and high-sensitivity observation in visible-near infrared, the HgCdTe focal plane arrays(FPAs) with high signal-to-noise ratio was fabricated based on the large-array low-noise HgCdTe det

As an important physical property of seafloor sediments, the seafloor micro-topography roughness is of great significance to marine engineering and scientific investigation. How to measure seafloor micro-topography roughness by op

Due to various factors such as imaging equipment, the image will be disturbed by noise during imaging or sensing. Image denoising aims to reduce or eliminate the influence of noise on the image, which often leads to the loss of hi

In order to effectively restore the degraded images in hazy weather, an adaptive linear transmission estimation dehazing algorithm was proposed. Firstly, we created a linear transformation model between the hazy image and the deha

In order to improve the detection performance of underwater laser screen, the underwater laser light screen detection model was established according to the underwater beam propagation law. The detection performance of underwater

When using the spectral measurement method for multi-color fluorescence analysis of cells, the emission spectrum can produce partial spectral overlap, which poses certain difficulties for qualitative and quantitative analysis. Aim

Aiming at the explosion and fire caused by leakage gas in industrial production, an infrared image leakage gas detection method based on shape and support vector machine(SVM) is proposed. The SVM classifier is trained by using the

For the difficulty of measuring the thin film thickness, a method of thin film thickness measurement based on laser heterodyne interferometry was proposed. Using the classical Michelson interference optical path, the heterodyne in

In order to realize high precision measurement of spectral radiance, a kind of small field near ultraviolet(UV) to near infrared(IR) spectroradiometer was developed with a wavelength range of 300 nm~ 2 000 nm and a spectral radian

In order to verify whether the response time of 6 light screens is consistent while the projectile passing through the sky screens vertical target, and to improve the velocity measurement accuracy of test equipment，a measurement m

Using the high-power laser diode array (LDA) end-pumped Nd:YAG laser bar method, combined with the design of the convex-concave unstable cavity, the average energy of the small beam divergence laser output was achieved about 83 mJ

In order to improve the serious flickering problem of the laser scanning projection system caused by the scanning frequency much smaller than 20 Hz when scanning complex graphics,we applied the Fleury algorithm to the laser scanni

In order to generate the multi-wavelength fiber laser at 2.1 μm band, a tunable multi-wavelength Ho3+-doped ring fiber laser based on all-fiber Sagnac interferometer was designed. A 3 m long Ho3+-doped silica fiber was pumped by a

In ultra-high coherent optical telecommunications, constant modulus algorithm (CMA) is usually adopted for compensation of impairment of polarization demultiplexing and polarization mode dispersion (PMD). Standard CMA has a functi

In order to measure the change of the refractive index of solution, the three layers structure of fiber core-gold layer-liquid on the surface of plastic optical fiber core was studied.A surface plasmon resonance(SPR) sensor using

Aiming at the generation of true random numbers, a true random number extraction method based on light scintillation images in atmospheric turbulence was proposed. First, we used a camera to obtain the light spot images of the las