Compact, unit magnification, reflective imaging relay using freeform surfaces

Jose Sasian; Weichuan Gao

doi:10.1117/1.OE.59.9.095103

Compact, unit magnification, reflective imaging relay using freeform surfaces

Jose Sasian, Weichuan Gao

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

1 Scopus citations

Abstract

We present a design for a unit magnification imaging relay that is compact. The design uses two mirrors, and one is used by light twice for a three-reflection system. The mirrors are specified with freeform surfaces. There are several tradeoffs of performance depending on field of view, F / #, and wavelength range. One example provides a 30-mm circular field of view at F / 2.8, and another example provides a circular field of view of 40 mm in diameter at F / 4 for a length of 1/4400 mm. Adding a third nearly flat mirror allows a system to provide a 50-mm field of view at F / 4 for a length of 420 mm. A last example includes a beam splitter cube to allow accessing the full field of view. These systems are diffraction limited at 550 nm.

Original language	English (US)
Article number	095103
Journal	Optical Engineering
Volume	59
Issue number	9
DOIs	https://doi.org/10.1117/1.OE.59.9.095103
State	Published - Sep 1 2020

Keywords

freeform surfaces
imaging relay
plane symmetry
reflective optics
unit magnification

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering(all)

Access to Document

10.1117/1.OE.59.9.095103

Cite this

@article{d2a810245a324da1a2069b5bb98fd936,

title = "Compact, unit magnification, reflective imaging relay using freeform surfaces",

abstract = "We present a design for a unit magnification imaging relay that is compact. The design uses two mirrors, and one is used by light twice for a three-reflection system. The mirrors are specified with freeform surfaces. There are several tradeoffs of performance depending on field of view, F / #, and wavelength range. One example provides a 30-mm circular field of view at F / 2.8, and another example provides a circular field of view of 40 mm in diameter at F / 4 for a length of 1/4400 mm. Adding a third nearly flat mirror allows a system to provide a 50-mm field of view at F / 4 for a length of 420 mm. A last example includes a beam splitter cube to allow accessing the full field of view. These systems are diffraction limited at 550 nm. ",

keywords = "freeform surfaces, imaging relay, plane symmetry, reflective optics, unit magnification",

author = "Jose Sasian and Weichuan Gao",

note = "Publisher Copyright: {\textcopyright} 2020 Society of Photo-Optical Instrumentation Engineers (SPIE).",

year = "2020",

month = sep,

day = "1",

doi = "10.1117/1.OE.59.9.095103",

language = "English (US)",

volume = "59",

journal = "SPIE J",

issn = "0091-3286",

publisher = "SPIE",

number = "9",

}

TY - JOUR

T1 - Compact, unit magnification, reflective imaging relay using freeform surfaces

AU - Sasian, Jose

AU - Gao, Weichuan

PY - 2020/9/1

Y1 - 2020/9/1

N2 - We present a design for a unit magnification imaging relay that is compact. The design uses two mirrors, and one is used by light twice for a three-reflection system. The mirrors are specified with freeform surfaces. There are several tradeoffs of performance depending on field of view, F / #, and wavelength range. One example provides a 30-mm circular field of view at F / 2.8, and another example provides a circular field of view of 40 mm in diameter at F / 4 for a length of 1/4400 mm. Adding a third nearly flat mirror allows a system to provide a 50-mm field of view at F / 4 for a length of 420 mm. A last example includes a beam splitter cube to allow accessing the full field of view. These systems are diffraction limited at 550 nm.

AB - We present a design for a unit magnification imaging relay that is compact. The design uses two mirrors, and one is used by light twice for a three-reflection system. The mirrors are specified with freeform surfaces. There are several tradeoffs of performance depending on field of view, F / #, and wavelength range. One example provides a 30-mm circular field of view at F / 2.8, and another example provides a circular field of view of 40 mm in diameter at F / 4 for a length of 1/4400 mm. Adding a third nearly flat mirror allows a system to provide a 50-mm field of view at F / 4 for a length of 420 mm. A last example includes a beam splitter cube to allow accessing the full field of view. These systems are diffraction limited at 550 nm.

KW - freeform surfaces

KW - imaging relay

KW - plane symmetry

KW - reflective optics

KW - unit magnification

UR - http://www.scopus.com/inward/record.url?scp=85092417959&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85092417959&partnerID=8YFLogxK

U2 - 10.1117/1.OE.59.9.095103

DO - 10.1117/1.OE.59.9.095103

M3 - Article

AN - SCOPUS:85092417959

SN - 0091-3286

VL - 59

JO - SPIE J

JF - SPIE J

IS - 9

M1 - 095103

ER -

Compact, unit magnification, reflective imaging relay using freeform surfaces

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this