Title:
光学ガラスおよび光学素子
Document Type and Number:
Japanese Patent JP7295766
Kind Code:
B2
Abstract:
Optical glass that has an Abbe number (Vd) of less than 23 and is suitable for use as a single-lens material constituting a photographic-imaging lens; an optical element including the optical glass; and an imaging lens containing a lens including the optical glass. Optical glass that has an Abbe number (Vd) of less than 23, wherein a flat plate of said optical glass with a thickness of 10 mm exhibits an ISO color contribution index (ISO/CCI) of 0 for blue (B), up to 9 for green (G), and up to 9 for red (R).
Inventors:
Shuhei Mikami
Application Number:
JP2019179743A
Publication Date:
June 21, 2023
Filing Date:
September 30, 2019
Export Citation:
Assignee:
HOYA Corporation
International Classes:
C03C3/21; G02B1/02
Domestic Patent References:
| JP6345481A | ||||
| JP2011246344A | ||||
| JP2004292301A | ||||
| JP2005206433A | ||||
| JP2012091989A | ||||
| JP2013151402A | ||||
| JP2002201041A | ||||
| JP2010222236A |
Foreign References:
| US20040018933 | ||||
| US20050164862 | ||||
| US20120142516 | ||||
| US20080216514 |
Attorney, Agent or Firm:
Maeda Suzuki International Patent Attorneys Corporation