Error Compensation Software to Remove the Low-Frequency Error of Aluminum Freeform Mirror for an Infrared Off-Axis Telescope

Tae Geun Ji; Woojin Park; Soojong Pak; Byeongjoon Jeong; Sanghyuk Kim; Hye In Lee; Sunwoo Lee; Sangwon Hyun; Geon Hee Kim; Dae Wook Kim

doi:10.7736/JKSPE.020.117

Error Compensation Software to Remove the Low-Frequency Error of Aluminum Freeform Mirror for an Infrared Off-Axis Telescope

Tae Geun Ji, Woojin Park, Soojong Pak, Byeongjoon Jeong, Sanghyuk Kim, Hye In Lee, Sunwoo Lee, Sangwon Hyun, Geon Hee Kim, Dae Wook Kim

Optical Sciences

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We present Error Compensation Software (ECS) which uses a decic polynomial model and three-dimensional surface measurement data for the fabrication of high precision freeform mirrors. ECS is designed based on a graphic user interface that includes an error calculation mechanism and surface distribution maps, and it accepts the Ultrahigh Accurate 3D Profilometer (UA3P) measurement data of the fabricated mirror surface. It exports surface coefficients and tool paths for the Single Point Diamond Turning (SPDT) machine which allows engineers to utilize the software during the compensation process. The ECS is based on Visual C++ and runs on the Windows operating system. The error compensation process with ECS has been applied to the 90 mm diameter aluminum freeform mirrors for usage in view infrared satellites, and the root mean square and peak-to-valley surface errors were reduced from 1.52 to 0.11 μm, and from 7.05 to 1.99 μm, respectively, satisfying the requirement of the infrared camera.

Original language	English (US)
Pages (from-to)	329-336
Number of pages	8
Journal	Journal of the Korean Society for Precision Engineering
Volume	38
Issue number	5
DOIs	https://doi.org/10.7736/JKSPE.020.117
State	Published - 2021

Keywords

Error compensation
Freeform mirror
Optical fabrication
Single point diamond turning

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.7736/JKSPE.020.117

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title = "Error Compensation Software to Remove the Low-Frequency Error of Aluminum Freeform Mirror for an Infrared Off-Axis Telescope",

abstract = "We present Error Compensation Software (ECS) which uses a decic polynomial model and three-dimensional surface measurement data for the fabrication of high precision freeform mirrors. ECS is designed based on a graphic user interface that includes an error calculation mechanism and surface distribution maps, and it accepts the Ultrahigh Accurate 3D Profilometer (UA3P) measurement data of the fabricated mirror surface. It exports surface coefficients and tool paths for the Single Point Diamond Turning (SPDT) machine which allows engineers to utilize the software during the compensation process. The ECS is based on Visual C++ and runs on the Windows operating system. The error compensation process with ECS has been applied to the 90 mm diameter aluminum freeform mirrors for usage in view infrared satellites, and the root mean square and peak-to-valley surface errors were reduced from 1.52 to 0.11 μm, and from 7.05 to 1.99 μm, respectively, satisfying the requirement of the infrared camera.",

keywords = "Error compensation, Freeform mirror, Optical fabrication, Single point diamond turning",

author = "Ji, {Tae Geun} and Woojin Park and Soojong Pak and Byeongjoon Jeong and Sanghyuk Kim and Lee, {Hye In} and Sunwoo Lee and Sangwon Hyun and Kim, {Geon Hee} and Kim, {Dae Wook}",

note = "Funding Information: This research was supported by the Korea Astronomy and Space Science Institute under the R&D program (No. 2020-3-850-02) supervised by the Ministry of Science and ICT. Publisher Copyright: {\textcopyright} 2021 Korean Society for Precision Engineeing. All rights reserved.",

year = "2021",

doi = "10.7736/JKSPE.020.117",

language = "English (US)",

volume = "38",

pages = "329--336",

journal = "Journal of the Korean Society for Precision Engineering",

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publisher = "Korean Society for Precision Engineeing",

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TY - JOUR

T1 - Error Compensation Software to Remove the Low-Frequency Error of Aluminum Freeform Mirror for an Infrared Off-Axis Telescope

AU - Ji, Tae Geun

AU - Park, Woojin

AU - Pak, Soojong

AU - Jeong, Byeongjoon

AU - Kim, Sanghyuk

AU - Lee, Hye In

AU - Lee, Sunwoo

AU - Hyun, Sangwon

AU - Kim, Geon Hee

AU - Kim, Dae Wook

N1 - Funding Information: This research was supported by the Korea Astronomy and Space Science Institute under the R&D program (No. 2020-3-850-02) supervised by the Ministry of Science and ICT. Publisher Copyright: © 2021 Korean Society for Precision Engineeing. All rights reserved.

PY - 2021

Y1 - 2021

N2 - We present Error Compensation Software (ECS) which uses a decic polynomial model and three-dimensional surface measurement data for the fabrication of high precision freeform mirrors. ECS is designed based on a graphic user interface that includes an error calculation mechanism and surface distribution maps, and it accepts the Ultrahigh Accurate 3D Profilometer (UA3P) measurement data of the fabricated mirror surface. It exports surface coefficients and tool paths for the Single Point Diamond Turning (SPDT) machine which allows engineers to utilize the software during the compensation process. The ECS is based on Visual C++ and runs on the Windows operating system. The error compensation process with ECS has been applied to the 90 mm diameter aluminum freeform mirrors for usage in view infrared satellites, and the root mean square and peak-to-valley surface errors were reduced from 1.52 to 0.11 μm, and from 7.05 to 1.99 μm, respectively, satisfying the requirement of the infrared camera.

AB - We present Error Compensation Software (ECS) which uses a decic polynomial model and three-dimensional surface measurement data for the fabrication of high precision freeform mirrors. ECS is designed based on a graphic user interface that includes an error calculation mechanism and surface distribution maps, and it accepts the Ultrahigh Accurate 3D Profilometer (UA3P) measurement data of the fabricated mirror surface. It exports surface coefficients and tool paths for the Single Point Diamond Turning (SPDT) machine which allows engineers to utilize the software during the compensation process. The ECS is based on Visual C++ and runs on the Windows operating system. The error compensation process with ECS has been applied to the 90 mm diameter aluminum freeform mirrors for usage in view infrared satellites, and the root mean square and peak-to-valley surface errors were reduced from 1.52 to 0.11 μm, and from 7.05 to 1.99 μm, respectively, satisfying the requirement of the infrared camera.

KW - Error compensation

KW - Freeform mirror

KW - Optical fabrication

KW - Single point diamond turning

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Error Compensation Software to Remove the Low-Frequency Error of Aluminum Freeform Mirror for an Infrared Off-Axis Telescope

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