Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the following Registration Statements:
(1) | Registration Statement (FormS-8No. 033-63739) pertaining to theII-VI Incorporated 1994 Nonemployee Directors Stock Option Plan, |
(2) | Registration Statement (FormS-8No. 333-12737) pertaining to theII-VI Incorporated Deferred Compensation Plan, |
(3) | Registration Statement (FormS-8No. 333-67121) pertaining to theII-VI Incorporated Stock Option Plan of 1997, |
(4) | Registration Statement (FormS-8No. 333-129675) pertaining to theII-VI Incorporated 2005 Omnibus Incentive Plan, |
(5) | Registration Statement (FormS-8No. 333-164827) pertaining to theII-VI Incorporated 2009 Omnibus Incentive Plan, |
(6) | Registration Statement (FormS-8No. 333-74682) pertaining to theII-VI Incorporated Stock Option Plan of 2001, |
(7) | Registration Statement (FormS-8No. 333-184805) pertaining to theII-VI Incorporated 2012 Omnibus Incentive Plan, |
(8) | Registration Statement (FormS-8No. 333-199855) pertaining to the Amended and RestatedII-VI Incorporated 2012 Omnibus Incentive Plan, |
(9) | Registration Statement (FormS-8No. 333-228367) pertaining to theII-VI Incorporated 2018 Employee Stock Purchase Plan, and |
(10) | Registration Statement (FormS-8No. 333-228368) pertaining to theII-VI Incorporated 2018 Omnibus Incentive Plan; |
of our report dated August 28, 2018 (except for Notes 6, 12 and 21, and the effects of the adoption of ASU2017-07,Compensation-Retirement Benefits (Topic 715), as reflected in Note 1 to the consolidated financial statements, as to which the date is December 27, 2018), with respect to the consolidated financial statements and schedule ofII-VI Incorporated and Subsidiaries and our report dated August 28, 2018, with respect to the effectiveness of internal control over financial reporting ofII-VI Incorporated and Subsidiaries, included in this Current Report(Form 8-K) ofII-VI Incorporated.
/s/ Ernst & Young LLP
Pittsburgh, Pennsylvania
December 27, 2018