Abstract

A diffraction limited optical system for head mounted displays (HMDs) was designed. This optical system consists of four modules, including 1:5 mm and 5:30 mm beam expanders, polarization grating-polarization conversion system (PG-PCS) and refractive/diffractive projection optical module. The PG-PCS module transforms the unpolarized Gaussian beam to a linearly polarized beam and it simultaneously homogenizes the spatial intensity profile. The optical projector module has a 30° field of view, a 22 mm eye relief, and a 10 mm exit pupil diameter with a compact structure. Common acrylic materials were utilized in the optical design process; therefore, the final optical system was lightweight. The whole optical system is suitable for a 0.7 inch liquid crystal on silicon microdisplay (LCOS) with HDTV resolution (1920×1080) and 8.0 μm pixel pitch.

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  1. Q. L. Zhao, Z. Q. Wang, and T. G. LiuDesign of optical system for head mounted micro displayOptic20071182933
  2. H. L. X. Zhang, G. Shi, H. Qu, Y. Wu, and J. ZhangReview and analysis of avionic helmet-mounted displaysOpt. Eng.201352110901
  3. J. Wang, Y. Liang, and M. XuDesign of a see-through head-mounted display with a freeform surfaceJ. Opt. Soc. Korea201519614618
  4. J. Wang, Y. Liang, and M. XuDesign of a low distortion head-mounted display with freeform reflective mirror based on two ellipsoids structureJ. Opt. Soc. Korea201620234238
  5. Q. L. Zhao, Z. Q. Wang, H. Q. Guo, Q. Sun, and Z. W. LuHead-mounted display with LCOS using diffractive optical elementOptic20041151114
  6. X. J. Yang, Z. Q. Wang, and R. L. FuHybrid diffractive-refractive 67° diagonal field of view optical see-through head-mounted displayoptic2005116351355
  7. E. Seo, H. Ch. Kee, Y. Kim, and M. J. EscutiPolarization conversion system using a polymer polarization gratingSID 11 DIGEST2011540543
  8. M. J. Escuti, R. K. Komanduri, J. Kim, and K. F. LawlerPolarization conversion systems with polarization gratings and related fabrication MethodsU.S. Patent2014US 2014 0285878 A1
  9. LIGHTTRANS software, GMBHhttp://www.lighttrans.com
  10. E. N. Kruszelnicki, J. Kędzierski, and Z. RaszewskiHigh birefringence liquid crystal mixtures for electro-optical devicesOpt. Appl.2012XLII167180
  11. J. Kim, J. H. Na, and S. D. LeeFully continuous liquid crystal diffraction grating with alternating semi-circular alignment by imprintingOpt. Express20122030343042

Other (11)

Q. L. Zhao, Z. Q. Wang, and T. G. LiuDesign of optical system for head mounted micro displayOptic20071182933

H. L. X. Zhang, G. Shi, H. Qu, Y. Wu, and J. ZhangReview and analysis of avionic helmet-mounted displaysOpt. Eng.201352110901

J. Wang, Y. Liang, and M. XuDesign of a see-through head-mounted display with a freeform surfaceJ. Opt. Soc. Korea201519614618

J. Wang, Y. Liang, and M. XuDesign of a low distortion head-mounted display with freeform reflective mirror based on two ellipsoids structureJ. Opt. Soc. Korea201620234238

Q. L. Zhao, Z. Q. Wang, H. Q. Guo, Q. Sun, and Z. W. LuHead-mounted display with LCOS using diffractive optical elementOptic20041151114

X. J. Yang, Z. Q. Wang, and R. L. FuHybrid diffractive-refractive 67° diagonal field of view optical see-through head-mounted displayoptic2005116351355

E. Seo, H. Ch. Kee, Y. Kim, and M. J. EscutiPolarization conversion system using a polymer polarization gratingSID 11 DIGEST2011540543

M. J. Escuti, R. K. Komanduri, J. Kim, and K. F. LawlerPolarization conversion systems with polarization gratings and related fabrication MethodsU.S. Patent2014US 2014 0285878 A1

LIGHTTRANS software, GMBHhttp://www.lighttrans.com

E. N. Kruszelnicki, J. Kędzierski, and Z. RaszewskiHigh birefringence liquid crystal mixtures for electro-optical devicesOpt. Appl.2012XLII167180

J. Kim, J. H. Na, and S. D. LeeFully continuous liquid crystal diffraction grating with alternating semi-circular alignment by imprintingOpt. Express20122030343042

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