Image exposure suppressed optical system by spatial light modulate

Jhe Syuan Lin, Chao Wen Liang, Shih Che Chien, Min Fong Luo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this paper, we present a novel optical design to overcome the over-exposure problem without increasing the specifications of sensors. A spatial light modulator (SLM), which is commonly used for modulating light intensity, is used in our design. In projector systems, SLM is commonly used in conjunction with DMD to modulate the intensity of the projected images. In our design, reverse of this design concept is employed. Intensity modulation is performed on object space, instead of image space. This paper shows two optical designs, one is image system, which image the outside object to SLM. This system has F/8 and Field of View (FOV) 40 degree Hyperfocal image design. The other is a relay image system, which relay the image from SLM to sensor. This relay system has F/4 and magnification of 0.5 times. Our design has successfully reduced over-exposure problems.

Original languageEnglish
Title of host publicationNovel Optical Systems Design and Optimization XVII
EditorsArthur J. Davis, G. Groot Gregory
ISBN (Electronic)9781628412208
StatePublished - 2014
Event17th Conference of Novel Optical Systems Design and Optimization - San Diego, United States
Duration: 17 Aug 201419 Aug 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference17th Conference of Novel Optical Systems Design and Optimization
Country/TerritoryUnited States
CitySan Diego


  • Exposure
  • Image system
  • Optical design
  • Spatial Light Modulate


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