Design and modeling of three-dimensional laser imaging system based on streak tube

Abstract

In the streak tube laser imaging system, there are two conflicts: the first is between high spatial resolution and wide field of view (FOV). The second is between high temporal resolution and deep depth of field (DOF). In this paper, a new non-scanning streak tube laser imaging system is presented. A microlens array with three different apertures is used to non-uniformly collect data from the image plane so the conflict between high spatial resolution and wide FOV is relieved and the detectable range of system is also increased. A remapping fiber optics with special design is used to realign the image plane on the two photocathodes of streak tubes to realize the operation mode of the two streak tubes so the conflict between high temporal resolution and deep DOF is relieved. The mathematical model of the entire imaging system is established based on the range equation. The structure parameters of the receiving optical system are optimized in order to achieve the optimal utilization rate of light energy. In the third, three simulated contrast experiments are organized, and the experiment results demonstrate that the imaging system proposed in this paper possesses properties of higher spatial resolution, wider FOV, higher temporal resolution, deeper DOF, and larger detectable range.

Animation Image Art Design Mode Using 3D Modeling Technology

“…e relationship between facial muscles and facial expressions, as well as the law of facial expression movement, can only be understood in this way [28]. To achieve the wiring rationality of the 3D virtual model, the physical engine must be used as the foundation, and the dynamics method must be used to realize each pose of the 3D virtual character animation [29]. Character animation, unlike other fluid or deformation animation, is usually divided into two parts: the establishment of the bone model and the establishment of the outer skin.…”

Material Innovation of Animation Modeling Design Based on Visual Symbol Theory

“…However, no studies on the use of comprehensive materials in animation illustrations have been conducted. Reference [20] has provided a thorough examination of the meaning and symbolism of symbols, which has aided in the study of this subject. e artistic language and artistic charm of materials are elaborated in literature [21] from two major aspects: an artistic expression of materials and technological expression of materials, which is also the general direction of material research in this paper, and the emotional semantic symbols contained in materials are extracted and studied.…”

A New Design of Large-format Streak Tube with Single-lens Focusing System

“…shows the deflection linearity obtained by using the trajectory tracking method under different deflection voltages from 100 V to 800 V by step of 100 V. Obviously, the streak tube has good deflection linearity. The relationship between the deflection distance and the deflection voltage is obtained by polynomial fitting as equation (1).…”

“…Due to ultra-high temporal resolution and high spatial resolution, the streak tube has been widely used in basic frontier scientific research and major original innovations, such as streak tube imaging lidar (STIL), inertial confinement fusion (ICF) diagnosis, (National Ignition Facility) NIF diagnosis detection, etc. [1]- [4]. However, the aberration of the electro-optical system of the streak tube, especially the increase of spherical aberration and distortion at the edge, limits the improvement of the effective photocathode and spatial resolution [5]- [7].…”