Determination of optimal location of circuit board and battery on 3D glasses by considering nose load and subjective discomfort

Joonho Chang, Kihyo Jung, Seung Ki Moon, Wonmo Kim, Andris Freivalds, Timothy William Simpson, Seon Pill Baik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The current shutter type (SG) 3D glasses in the market are heavy (41 g) and have a poor weight balance due to a battery and a circuit board on the temples of the glasses. Therefore, it causes high pressure on the nose and discomfort for the users. This study determined the optimal location of a circuit board and a battery for SG type 3D glasses. Four 3D glasses with different weight distributions (the battery and the circuit board locations: front, middle, ear, and rear positions) were employed in the experiments. Subjective discomfort ratings (100 point scale) around the nose and the posterior edge of the ear were obtained after wearing the four 3D glasses. Also, at the same time the load on the nose was measured by using FSR (force sensing resistor) film sensors. As a result, the front position showed the highest subjective discomfort rating on the nose. Discomfort ratings on the nose were decreased significantly as the location of the battery and circuit board moved backward on the temples (p = 0.0009). On the other hand, the ear position showed the highest subjective discomfort rating on the posterior edge of the ear, and, as opposed to the nose, the subjective discomfort ratings for the posterior edge of the ear tended to increase as the battery and circuit board moved backward (p = 0.0093). The highest nose load, 0.34 N, was found on the front position, and the load on the nose was decreased significantly as the location of the battery and circuit board moved backward (p < 0.001). Also, the nose loads had a strong correlation with the discomfort ratings on the nose (Radj2 R = 99.1%), but no strong correlation was found with the subjective discomfort ratings on the posterior edge of the ear (Radj2 R = 19.6%). Consequently, the middle position was recommended as the optimal location of the battery and circuit board on the temples of the SG type 3D glasses by considering the above results.

Original languageEnglish (US)
Title of host publicationProceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012
Pages1877-1881
Number of pages5
DOIs
StatePublished - Dec 1 2012
EventProceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012 - Boston, MA, United States
Duration: Oct 22 2012Oct 26 2012

Publication series

NameProceedings of the Human Factors and Ergonomics Society
ISSN (Print)1071-1813

Other

OtherProceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012
CountryUnited States
CityBoston, MA
Period10/22/1210/26/12

All Science Journal Classification (ASJC) codes

  • Human Factors and Ergonomics

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    Chang, J., Jung, K., Moon, S. K., Kim, W., Freivalds, A., Simpson, T. W., & Baik, S. P. (2012). Determination of optimal location of circuit board and battery on 3D glasses by considering nose load and subjective discomfort. In Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012 (pp. 1877-1881). (Proceedings of the Human Factors and Ergonomics Society). https://doi.org/10.1177/1071181312561272