ESI Schedules Fiscal 2010 Q1 Earnings Release and Conference Call for Thursday, July 23

PORTLAND, Ore.--(Business Wire)--
Electro Scientific Industries, Inc. (Nasdaq:ESIO), a leading provider of
world-class photonic and laser systems for microengineering applications, today
announced that it will announce results for its fiscal 2010 first quarter after
the market closes on Thursday, July 23, 2009. Following the release, Nick
Konidaris, chief executive officer, will host a conference call at 2:00 p.m.
Pacific Time to discuss the company`s results along with business highlights and
outlook. The conference call will also be simultaneously webcast, and can be
accessed at www.esi.com.

What: ESI Fiscal 2010 Q1 Earnings Conference Call

When: Thursday, July 23, 2009 at 2:00 p.m. (Pacific Time).

How: Live call participants can dial 888.419.5570 (domestic) or 617.896.9871
(international) and use passcode 43469685.

Webcast:www.esi.com

Replay: At the call`s completion, an audio replay will be available at
www.esi.com or by calling 888-286-8010 (domestic) or 617-801-6888
(international) and using passcode 97621479. The phone replay will be available
through August 2, 2009.

About ESI, Inc.

ESI is a pioneer and leading supplier of world-class production laser systems
that help its microelectronics customers achieve compelling yield and
productivity gains. The company's industry-leading, application-specific
products enhance electronic-device performance in three key
sectors-semiconductors, components and electronic interconnect-by enabling
precision fine-tuning of device microfeatures in high-volume manufacturing
environments. Founded in 1944, ESI is headquartered in Portland, Ore. More
information is available at www.esi.com.

ESI
Barbara Rizzatti, 503-526-5044

Copyright Business Wire 2009