Patent ID: 11933979
Assignee: NITTO DENKO CORPORATION
Field: Optics (Instruments)
Classification: CPC B  G  C | IPC C  G

Claim 1:
2. The head-up display apparatus according to claim 1, wherein the polarizer contains an aromatic disazo compound represented by the following formula (1):, , in the formula (1), Q1 represents a substituted or unsubstituted aryl group, Q2 represents a substituted or unsubstituted arylene group, R1s each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted acetyl group, a substituted or unsubstituted benzoyl group, or a substituted or unsubstituted phenyl group, M represents a counterion, “m” represents an integer of from 0 to 2, and “n” represents an integer of from 0 to 6, provided that at least one of “m” or “n” does not represent 0, a relationship of 1≤m+n≤6 is satisfied, and when “m” represents 2, the respective R1s may be identical to or different from each other.