Nonuniform intensity distribution of the scattered light by moving diffuser across projection lens pupil and its influence in speckle reduction

Nonuniform intensity distribution of the scattered light by moving diffuser across projection lens pupil and its influence in speckle reduction

The measurement of the nonuniform intensity distribution of scattered light by a moving diffuser using an integrating sphere, which lowers the effective numerical aperture of the projection lens and affects the lowest speckle contrast, is reported. A comparison of the effective numerical apertures r...

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Veröffentlicht in:Optical review (Tokyo, Japan) Japan), 2014, Vol.21 (1), p.90-93
Hauptverfasser: Tomita, Yasushi, Suzuki, Koji, Fukui, Tatsuo, Tokita, Hironori, Kubota, Shigeo
Format: Artikel
Sprache:eng
Schlagworte:
Atomic
Lasers
Microwaves
Molecular
Optical and Plasma Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum Optics
RF and Optical Engineering
Special Section: The 2nd Laser Display Conference (LDC’13)
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Zusammenfassung:The measurement of the nonuniform intensity distribution of scattered light by a moving diffuser using an integrating sphere, which lowers the effective numerical aperture of the projection lens and affects the lowest speckle contrast, is reported. A comparison of the effective numerical apertures realized by several diffusers revealed that JIS #600 or #800 diffusers are most appropriate for efficient speckle reduction
ISSN:1340-6000
1349-9432
DOI:10.1007/s10043-014-0014-0