JP2554601C - - Google Patents
Info
- Publication number
- JP2554601C JP2554601C JP2554601C JP 2554601 C JP2554601 C JP 2554601C JP 2554601 C JP2554601 C JP 2554601C
- Authority
- JP
- Japan
- Prior art keywords
- light
- phase
- ring pattern
- phase plate
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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