Fine-pitch high-efficiency spatial optical modulator for mobile display applications

Song, Jay Hyok; Yun, Sang Kyeong; Kim, HeeYeoun; An, Sung Yong; Park, Heung-Woo; Choi, Young-Jae; Yurlov, Victor; Lapchuk, Anatoliy; Yang, Chung Mo; Lee, Sung Jun; Jang, Junwon; Lee, Ki Un; Woo, Ki Suk; Bourim, El Mostafa

doi:10.1117/1.3309711

Cited by 2 publications

(2 citation statements)

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“…However, the displacement decreased as the temperature of the deformable mirror was changed. From our analytical calculation, the temperature dependence is nm/ C. The displacement of the deformable mirror should be precisely controlled regardless of temperature change: a 1 nm change in the displacement produces about 2 gray shifts using 8-bit brightness control [4]. Hence, as the temperature of the deformable mirror changes, the quality of the projected image can deteriorate.…”

Section: A Analysis Of the Displacement Of The Deformable Mirrormentioning

confidence: 99%

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IEEE Components, Packaging, and Manufacturing Technology Society information for authors

2011

IEEE Trans. Compon., Packag. Manufact. Technol.

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A piezo-actuated display package (PADP) with deformable mirror arrays is proposed for handheld applications of a micro-beam projection display. Temperature change is a critical factor affecting the performance of a PADP. To analyze temperature-related malfunctions, electrical, mechanical, and thermal analyses of the package are conducted simultaneously. A temperature control system using a micro-heater is developed to maintain the deformable mirror module at a constant temperature. Numerical results are used to determine the relationship between displacement and the temperature of the deformable mirrors. Experimental results are used to elucidate the relationship between the source image data and the temperature of the deformable mirror module. A micro-beam projector with a temperature control system is used to produce high quality images under various ambient temperatures.Index Terms-Deformable mirror arrays, micro-beam projector, temperature control.

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Section: A Analysis Of the Displacement Of The Deformable Mirrormentioning

confidence: 99%

“…Variation in the ambient temperature of the deformable mirror module package can result in significant problems. In particular, the performance of a piezo-actuated display package (PADP) [1]- [4] is very sensitive to its thermal environment. Hence, it is essential to investigate the causes of package malfunctions and eliminate them.…”

Section: Introductionmentioning

confidence: 99%