Title:
光学システム
Document Type and Number:
Japanese Patent JP7361028
Kind Code:
B2
Abstract:
Optical systems including a reflective polarizer are described. The reflective polarizer includes first and second reflection zones, such that for light substantially normally incident on the reflective polarizer, the first zone substantially reflects light in a first wavelength range and substantially transmits light in a different non-overlapping second wavelength range, and the second zone substantially reflects light in the second wavelength range and substantially transmits light in the first wavelength range. The first and second reflection zones have first and second thicknesses having corresponding first and second mid-points separated by a distance d. In some embodiments, a longitudinal chromatic aberration of the optical imaging system of the first wavelength range to the second wavelength range caused when reducing d so that the first and second reflection zones are immediately adjacent is a distance h where 0.3 h≤d≤0.7 h.
Inventors:
Won, Timothy El.
Application Number:
JP2020523371A
Publication Date:
October 13, 2023
Filing Date:
October 23, 2018
Export Citation:
Assignee:
3M Innovative Properties Company
International Classes:
G02B5/28; G02B3/00; G02B5/30; G02B27/28
Domestic Patent References:
| JP2005242361A | ||||
| JP2015502565A | ||||
| JP2006145884A | ||||
| JP2018513392A |
Foreign References:
| WO2017039713A1 | ||||
| CN105676477A |
Attorney, Agent or Firm:
Ken Fujii
Taro Akazawa
Wakako Nomura
Tsukuda Seigen
Hideto Asamura
Taro Akazawa
Wakako Nomura
Tsukuda Seigen
Hideto Asamura