A scanning method of a cascaded prism sub-beam coarse and fine two-stage scanning device
A technology of scanning device and scanning method, which is applied in the direction of optics, optical components, instruments, etc., can solve problems affecting the scanning accuracy of prisms, and achieve the effects of compact structure, easy implementation, and simple control process
Active Publication Date: 2021-02-02
TONGJI UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, on the basis of rotational motion, the system adopts the implicated deflection method of three modules, which will generate more mechanical error accumulation, which will affect the accuracy of prism scanning
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0046] This application proposes a scanning method of a cascaded prism sub-beam coarse-fine two-stage scanning device, wherein the cascaded prism sub-beam coarse-fine two-stage scanning device includes a fine scanning prism pair and a coarse scanning prism pair arranged before and after, such as figure 1 As shown, the coarse scanning prism pair includes a first rotating prism 1 and a second rotating prism 2 with the same wedge angle, and the fine scanning prism pair includes a third rotating prism 3 and a fourth rotating prism 4 with the same wedge angle. Specifically, the patent " The structure of cascaded prism sub-beam coarse and fine two-stage scanning device" (CN106526835A). The first, second, third, and fourth rotating prisms 4 are arranged in sequence on the same optical axis O-Z and can rotate independently, as shown in the figure θ 1 , θ 2 , θ 3 and θ 4 Respectively represent the rotation angles of the four rotating prisms. Scanning plane 5 is arranged in front of t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| angle | aaaaa | aaaaa |
| refractive index | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the scanning method of a cascading prism pair light beam coarse and fine two-stage scanning device. The method comprises a light beam coarse and fine coupling scanning reversealgorithm and a fine scanning reverse iteration method and the method can be used to realize high precision scanning in a large range. Four rotating prisms which are in a cascade arrangement state are controlled to be independently rotated about the center line of an optical axis so as to realize the method. The four rotating prisms are divided into front and back groups which are called as a coarse scanning prism pair and a fine scanning prism pair. The rotating motion of the two prisms in the coarse scanning prism pair can realize the large-range rough scanning of a light beam. The rotatingmotion of the two prisms in the fine scanning prism pair can realize the fine scanning of the light beam in a small range. Compared with the prior art, by using the method of the invention, the structure of the rotated double prisms maintains to be compact, stable and reliable, a reverse algorithm solution speed is fast, precision is high, the application requirements of large-range photoelectric tracking and high precision are satisfied, and the rapid tracking and aiming of a target can be realized.
Description
technical field [0001] The invention relates to the technical field of photoelectric tracking, in particular to a scanning method of a cascaded prism sub-beam coarse and fine two-stage scanning device. Background technique [0002] The rotating prism system has a wide range of uses in dynamic optical tracking, and can precisely realize the adjustment of the viewing axis, the alignment of the optical path, and the tracking of the measured object. However, in the traditional rotating double prism photoelectric tracking system, the tracking range and tracking accuracy of the beam are a pair of mutually restrictive indicators. Under the application of higher precision requirements, it cannot have the characteristics of large range and high precision at the same time. [0003] The following prior art provides the application and structural composition of the rotating prism scanning device: [0004] The prior art (G. Strong, "Gun sight compensator," US patent, US20050039370) use...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10
CPCG02B26/108
Inventor 李安虎张洋
Owner TONGJI UNIV