# EXHIBIT 31.1

I, Kathleen P. Iverson, certify that:

1.    I
have reviewed this Quarterly Report on Form 10-Q of CyberOptics Corporation.

2.    Based
on my knowledge, this report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the circumstances under
which such statements were made, not misleading with respect to the period covered by this report;

3.    Based
on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations and cash
flows of the registrant as of, and for, the periods presented in this report;

4.    The
registrants other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for
the registrant and have:

| | (a)    Designed
such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;
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| | (b)    Evaluated
the effectiveness of the registrants disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the
end of the period covered by this report based on such evaluation; and
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| | (c)    Disclosed
in this report any change in the registrants internal control over financial reporting that
occurred during the registrants most recent fiscal quarter that has materially affected, or is
reasonably likely to materially affect, the registrants internal control over financial
reporting; and
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5.    The
registrants other certifying officer(s) and I have disclosed, based on our most recent
evaluation of internal control over financial reporting, to the registrants auditors and the
audit committee of the registrants board of directors (or persons performing the equivalent
functions):

| | (a)    All
significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrants ability to
record, process, summarize and report financial information; and
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| | (b)    Any
fraud, whether or not material, that involves management or other employees who have a significant
role in the registrants internal control over financial reporting.
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Date:   August 13, 2004

| | /s/   Kathleen P. IversonSignatureName: Kathleen P. IversonTitle: Chief Executive Officer
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