Title:
スペックル低減モジュール
Document Type and Number:
Japanese Patent JP7301513
Kind Code:
B2
Abstract:
To provide a speckle reduction module capable of effectively reducing speckles.SOLUTION: A speckle reduction module provided herein includes a light dispersion functional surface provided with multiple lens elements, each having a non-axisymmetric three-dimensional structure, formed thereon and configured to disperse and pass light. Each lens element having the non-axisymmetric three-dimensional structure has no light collecting capability like a microlens and, as such, has no points with significantly high light intensity on a surface thereof.SELECTED DRAWING: Figure 3
Inventors:
Kazuhiro Umeki
Application Number:
JP2018177505A
Publication Date:
July 03, 2023
Filing Date:
September 21, 2018
Export Citation:
Assignee:
Ricoh Industrial Solutions Co., Ltd.
International Classes:
G02B5/02; G02B5/30; G02B27/48; G03F7/20
Domestic Patent References:
| JP2011180581A | ||||
| JP2016045415A | ||||
| JP2006047421A | ||||
| JP2018054759A | ||||
| JP2017083815A |
Foreign References:
| CN104237980A |
Attorney, Agent or Firm:
Daisuke Noguchi
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