PMID- 27828253
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180126
LR  - 20221223
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 24
IP  - 21
DP  - 2016 Oct 17
TI  - Design, fabrication and characterization of transparent retro-reflective screen.
PG  - 24232-24241
LID - 10.1364/OE.24.024232 [doi]
AB  - A transparent retro-reflective screen, which can be used as head-up-display (HUD) 
      or a see-through screen for head mounted projection displays (HMPD) is proposed. 
      The high optical gain of screen enables the use of low power projectors to 
      produce very bright content. The screen assembly is based on retro-reflective 
      microspheres, patterned on an optically clear substrate using steel stencil as a 
      shadow mask. The incident light is retro-reflected as a narrow angular cone to 
      create an eyebox for the viewer. The optical gain and transparency of screen is 
      varied by changing the fill factor of the mask. The optical design and 
      fabrication of the screen is presented. The retro-reflective and transmission 
      characteristics of screen are evaluated. The impact of fill factor on screen 
      luminance and transparency is studied. The screen provides high luminance (up to 
      280cd/m(2) with 50% transparency) from about 40cm to >3m when used with a low 
      power (15 lumen) mobile projector. Unlike regular diffusers, luminance remains 
      nearly constant with projection distance. Furthermore, the screen offers 
      prominent see-through capability with small degradation in modulation transfer 
      function for transmitted light. For a particular camera and imaging 
      configuration, MTF10 (10% cutoff) for 50% transparent screen is reduced from 37 
      cyc/deg to 30 cyc/deg when screen is inserted at an intermediate distance.
FAU - Soomro, Shoaib R
AU  - Soomro SR
FAU - Urey, Hakan
AU  - Urey H
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
EDAT- 2016/11/10 06:00
MHDA- 2016/11/10 06:01
CRDT- 2016/11/10 06:00
PHST- 2016/11/10 06:00 [entrez]
PHST- 2016/11/10 06:00 [pubmed]
PHST- 2016/11/10 06:01 [medline]
AID - 352374 [pii]
AID - 10.1364/OE.24.024232 [doi]
PST - ppublish
SO  - Opt Express. 2016 Oct 17;24(21):24232-24241. doi: 10.1364/OE.24.024232.