Title:
POLARIZATION SEPARATION ELEMENT, POLARIZATION SEPARATION ELEMENT DESIGN METHOD, OPTICAL SYSTEM AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/106970
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polarization separation element, a polarization separation element design method, an optical system, and an optical instrument that do not require a structure birefringence layer and can handle a wide incident angle with a simple multilayer film (laminated film). Provided is a polarization separation element 101e formed between a pair of light-transmitting substrates, wherein the transmittance of P-polarized light and the transmittance of S polarization light thereof differ by B% or more in the entire wavelength interval from a wavelength A1 (nm) to a wavelength A2 (nm), where A1 = λ × 0.86, A2 = λ × 1.7 (where λ (nm) is a design wavelength), and B (%) = 22.5. The polarization separation element 101e is a dielectric alternate laminate structure, and the dielectric alternate laminate structure has at least a broadband polarization separation film configuration, a first narrowband polarization separation film configuration, and a second narrowband polarization separation film configuration.
More Like This:
Inventors:
TOYOHARA NOBUYOSHI (JP)
OGAWA KOICHI (JP)
OGAWA KOICHI (JP)
Application Number:
PCT/JP2018/037919
Publication Date:
June 06, 2019
Filing Date:
October 11, 2018
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B5/30
Foreign References:
| JP2001051121A | 2001-02-23 | |||
| JP2008181074A | 2008-08-07 | |||
| JP2006349972A | 2006-12-28 | |||
| JP2005107317A | 2005-04-21 |
Attorney, Agent or Firm:
SAITO Keisuke (JP)
Download PDF: