Measurement of Freeform Optical Surfaces: Trade‐Off between Accuracy and Dynamic Range

Chen, Shanyong; Xue, Shuai; Zhai, Dede; Tie, Guipeng

doi:10.1002/lpor.201900365

Cited by 64 publications

(15 citation statements)

References 205 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…without switching the gain and changing the frequency characteristics of the channel. It should be noted that the problem of non-switching provision of the dynamic range of the measuring channel is especially relevant when measuring transient shock processes where incorrect initial determinations of accelerations and, as a consequence, overload are possible [8].…”

Section: Subject and Methodsmentioning

confidence: 99%

Determination of Dynamic Range of Stand-alone Shock Recorders

Stakhova

Kyrychuk

Nazarenko

2022

Measurement Science Review

View full text Add to dashboard Cite

In aircraft construction, when creating samples of new equipment, shock tests are often performed, both on individual components and the entire product. It requires introducing non-destructive testing devices into production, it is one of the most important factors in accelerating scientific and technological progress, raising the quality and competitiveness of manufactured products. Applying modern means of non-destructive testing, there is the problem of their protection from external vibrations, which affect the sensitivity, accuracy and reliability of high-precision measurements. In such cases, the conversion of measuring information during powerful vibration and shock tests, as a rule, is carried out by piezoelectric acceleration sensors. Although to provide impact testing, there is a need to develop and use stand-alone recorders. The main requirements for these recorders are to ensure the autonomy and operability of the recorder onboard the test product and to ensure the synchronization of the registration of the shock load.

show abstract

Section: Subject and Methodsmentioning

confidence: 99%

Determination of Dynamic Range of Stand-alone Shock Recorders

Stakhova

Kyrychuk

Nazarenko

2022

Measurement Science Review

View full text Add to dashboard Cite

show abstract

“…In the development of stand-alone recorders, the problem of providing a dynamic range of the measuring channel of the recorder with a given accuracy of registration of the vibration signal by non-switching method, i.e. without switching the gain and changing the frequency characteristics of the channel [7].…”

Section: Subject and Methodsmentioning

confidence: 99%

Finding the Dynamic Range of Recorders During Impact Tests

Stakhova

Makarovskyi

2022

ECS

View full text Add to dashboard Cite

In aircraft construction, when creating samples of new equipment, impact tests are often performed, both of individual components and of the entire product. It requires to introduce non-destructive testing devices into production, it is one of the most important factors in accelerating scientific and technological progress, raising the quality and competitiveness of manufactured products. Applying modern means of non-destructive testing, there is the problem of their protection from external vibrations, which affect the sensitivity, accuracy and reliability of high-precision measurements. In such cases the conversion of measuring information during powerful vibration and impact tests, as a rule, is carried out by piezoelectric acceleration sensors. Although to provide impact testing, there is a need to develop and use stand-alone recorders. The main requirements for these recorders are to ensure the autonomy and operability of the recorder on board the test product and to ensure the synchronization of the registration of the impact load.

show abstract

“…The application of freeform surface in off-axis reflective systems realizes better imaging performance as it can offer more degrees of freedom for imaging optical design [1][2][3] . The decenter and tilt of mirrors will induce unconventional aberrations with special field dependence 4 , which will be well matched by the aberration that the freeform surfaces induced 5,6 . Therefore, the freeform surfaces have been successfully used in many domains [7][8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 98%

Design and exploration of freeform three-mirror imaging systems with integrated primary and tertiary mirrors using same expression

Zhou

Yang

Cheng

et al. 2023

AOPC 2022: Novel Optical Design; And Optics Ultra Precision Manufacturing and Testing

View full text Add to dashboard Cite

A typical and widely used configuration of freeform imaging system is freeform off-axis three-mirror systems. However, as the system configuration and surface shape have no rotational symmetry, the assembly process will be very difficult. In this paper, we designed off-axis three-mirror systems in which the primary and tertiary mirrors are integrated into one single element. The two mirrors use different portions of a single mirror, which is represented by one mathematical expression. The design process of the system is demonstrated in detail, and three different kinds of light folding geometry are explored. The system design using different types of freeform surface is also explored and the imaging performance is compared. Finally, tolerance analysis which considers the local and random nature of surface error and actual manufacturing difficulty of the freeform surface is conducted.

show abstract

Measurement of Freeform Optical Surfaces: Trade‐Off between Accuracy and Dynamic Range

Cited by 64 publications

References 205 publications

Determination of Dynamic Range of Stand-alone Shock Recorders

Determination of Dynamic Range of Stand-alone Shock Recorders

Finding the Dynamic Range of Recorders During Impact Tests

Design and exploration of freeform three-mirror imaging systems with integrated primary and tertiary mirrors using same expression

Contact Info

Product

Resources

About