Fast and high precision alignment of off-axis reflective optical system

2021 ◽  
Author(s):  
Chunyu Wang ◽  
Cong Wang ◽  
Jinchuan Niu ◽  
Yinglong Zhao ◽  
Shengjie Zhang ◽  
...  
Keyword(s):  
High Precision ◽  
Optical System

Optical System Design of LCOS-Based and High Precision Dynamic Star Simulator

2014 ◽  
Vol 41 (7) ◽  
pp. 0716003
Author(s):  
陈启梦 Chen Qimeng ◽  
张国玉 Zhang Guoyu ◽  
孙向阳 Sun Xiangyang ◽  
王国名 Wang Guoming ◽  
王哲 Wang Zhe
Keyword(s):  
System Design ◽  
High Precision ◽  
Optical System ◽  
Optical System Design

Optical System Design of High-Precision Static Star Simulator with Large Field of View

2014 ◽  
Vol 51 (5) ◽  
pp. 052202
Author(s):  
陈启梦 Chen Qimeng ◽  
张国玉 Zhang Guoyu ◽  
王哲 Wang Zhe ◽  
张健 Zhang Jian
Keyword(s):  
System Design ◽  
High Precision ◽  
Optical System ◽  
Field Of View ◽  
Large Field ◽  
Optical System Design

Evaluation of Measurement Uncertainty for High Precision Gear Involute Profile Measuring System

2010 ◽  
Vol 97-101 ◽  
pp. 4265-4270
Author(s):  
Yong Ma ◽  
Kuo Wang ◽  
Ke Hong Li ◽  
Li Ding Wang
Keyword(s):  
Control System ◽  
Measurement Uncertainty ◽  
High Precision ◽  
Optical System ◽  
High Accuracy ◽  
Measuring System ◽  
Electronic Control ◽  
Mechanical Parts ◽  
Electronic Control System ◽  
Inspection Process

This paper is concerned with an effective way to evaluate the measurement uncertainty for high precision gear involute profile measuring system in the gear testing centre Mahr891E which was improved both in numerical-electronic control system and mechanical parts . Optical system was used during the inspection process in this paper. The precision of involute profile measuring system in this gear testing centre was known to be available to test gear with high accuracy grade.

Optical System Design of Star Camera with High Precision Better than Second Level

2015 ◽  
Vol 42 (7) ◽  
pp. 0716001
Author(s):  
伍雁雄 Wu Yanxiong ◽  
吴洪波 Wu Hongbo ◽  
张继真 Zhang Jizhen ◽  
王灵杰 Wang Lingjie ◽  
朱杨 Zhu Yang ◽  
...  
Keyword(s):  
System Design ◽  
High Precision ◽  
Optical System ◽  
Optical System Design ◽  
Better Than ◽  
Star Camera

HIGH PRECISION RING LOCATION FOR A NEW ROTATIONALLY SYMMETRIC TRIANGULATION SENSOR

2005 ◽  
Vol 02 (04) ◽  
pp. 279-289 ◽  
Author(s):  
JUN GAO ◽  
XIAOJIA WANG ◽  
JOHANNES ECKSTEIN ◽  
PETER OTT
Keyword(s):  
High Precision ◽  
Optical System ◽  
Optical Measurement ◽  
Design Method ◽  
Rotational Symmetry ◽  
Distance Measurement ◽  
Diamond Turning ◽  
Measurement Result ◽  
Rotationally Symmetric ◽  
Ring Location

For a growing range of optical measurement task, like gap measurement in automotive industry, traditional triangulation sensors have several disadvantages due to the fact that the measurement result is dependent on the orientation of the sensor because of the non-rotational symmetry of the optics. Consequently a design method was proposed recently for a new class of rotationally symmetric triangulation sensors. Such designs can be realized with aspheric reflection optics and area detectors, such as CCD or CMOS. The optics of the sensor can be extended by an imaging optics which allows at the same time image capturing and distance measurement. In this paper we show the first prototype. This system is based on an optical system of one part manufactured by commercially available diamond turning. The layout of the optical system for distance measurement consists of two reflecting aspheric surfaces. The high precision algorithm for ring location was needed because the performance of the sensor is based on the detection of ring, especially the radius of the ring. In this paper, we try to give the different evaluation function for high precision location of ring. Then we used various methods to solve it and got optimized result. The comparison of algorithms for simulation was listed in the paper. And the measurement result for the real image got by the prototype was also presented. It seems the algorithm meets the precision demand of the sensor.

Scientifically Operated CCD-Based Spectroscopic System for High-Precision Spectrometric Determinations of Seawater

1995 ◽  
Vol 49 (12) ◽  
pp. 1729-1736 ◽  
Author(s):  
Robert S Pomeroy ◽  
Mark E. Baker ◽  
M. Bonner Denton ◽  
Andrew G. Dickson
Keyword(s):  
Remote Sensing ◽  
High Precision ◽  
Optical System ◽  
Thymol Blue ◽  
Array Detector ◽  
Test Case ◽  
Ph Indicator ◽  
Solid State Detector ◽  
Field Instrumentation ◽  
A Charge

The application of an aberration-corrected imaging spectrograph with the use of fiber-optic inputs and a charge-coupled device detector to produce a sensitive, flexible, and rugged spectroscopic system capable of employment in remote sensing and field applications is presented. This investigation focuses on the optical system design, detector characteristics, and modes of operation that will result in a field instrument capable of both sensitive fluorescence and high-precision absorbance measurements. Evaluation of the optical system used the spectroscopic determination of seawater pH as the test case. Spectral measurements were made with the use of thymol blue as a pH indicator for absorbance and 7-hydroxy-coumarin as the fluorescence pH indicator. This system displayed excellent precision for both absorbance and fluorescence analyses; RSDs for absorbance and fluorescence of ±0.00065 and ±0.0015 in pH, respectively, were experimentally obtained. These findings, along with the advantages of the area array detector to provide simultaneous multiwavelength, multianalyte spectral analysis in a single, rugged optical system, make a strong case for the application of scientifically operated solid-state detector systems to remote sensing and field instrumentation.

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