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Mita Giken Co., Ltd.


Customized Laser Optics - design and assembly for your application
Laser related Products (jpv) - unique products for laboratory/industry use or system integration
Technical Consulting for Lasers - support for your project

Laser Safety Consulting (jpv)

Examples of Our Work   Confocal Optics - Microscopes

Company Information   Business Hours   Contact Us   Delivery Times / Shipping Costs / Methods of Payment

Director's Message (jpv)


Response Time to Your E-mail / Temporary Closures
(frequently updated)


4 April 2024
The 19th anniversary of Mita Giken Co., Ltd.

4 April 2023
The 18th anniversary of Mita Giken Co., Ltd.

4 April 2022
The 17th anniversary of Mita Giken Co., Ltd.

4 April 2021
The 16th anniversary of Mita Giken Co., Ltd.

11 July 2020
Specification sheet (159kB) of our laser leak tester is available.

4 April 2020
The 15th anniversary of Mita Giken Co., Ltd.

17 December 2019
Now our laser leak tester for Windows 10 is available.

10 September 2019
The telephone/fax line was recovered at 11:00 today.

10 September 2019
Mita Giken’s telephone/fax line is out of service because of Typhoon of 8/9 September 2019.
Please use E-mail or other communication services to contact us.
We are waiting for the recovery schedule.

4 April 2019
The 13th anniversary of Mita Giken Co., Ltd.

4 April 2018
The 13th anniversary of Mita Giken Co., Ltd.

4 April 2017
The 12th anniversary of Mita Giken Co., Ltd.

9(Thur.), 10(Fri.) June 2016
We presented our laser leak tester "Lasersafer" and our laser safety overall support
at the 85th Laser Materials Processing Conference held in Osaka University.

18(Wed.) ~ 20(Fri.) May 2016
We presented our laser leak tester "Lasersafer" and our laser safety overall support
at LASER EXPO of OPIE, an exhibition held in Pacifico Yokohama.
We thank you for many inquiries.

4 April 2016
The 11th anniversary of Mita Giken Co., Ltd.

4 March 2016
Our laser leak tester is upgraded.
Now it can be used both for pulse lasers and continuous (CW) lasers.
In case of pulse lasers, non modulated emission
at >= 1kHz of pulse repetition frequency is supported.
We are sure that the laser leak tester is of great help to verify
that emission from laser products is class 1.

13 October 2015 (added later)
Mita Giken has developed a laser leak tester.
This tool is used to verify that accessible emission (laser leak from protective housing)
from laser products is within class 1 accessible emission limit (AEL).
Both class 1 AEL calculation and measurement optics are based on JIS C 6802 : 2014.
Continuous (CW) lasers with wavelength of 400 nm ~ 1100 nm
and emission duration of >=0.4 s is supported.
Japanese version is available now, English version is under consideration.

11 May 2015
100~120 V input range "AC adapter" option of biased PIN photodiodes
with 90~132V conventional specification could be delivered to customers without notice.
If you purchased this option in or after December 2014 and use it at 90~less 100 V
or over 120~132V, please check the input voltage indication on the AC adopter.
In case the indication is "100~120 V", please remove the AC adapter
form the line voltage and contact us. We will try to find the solution with you.
The specification was changed today, as 100~120V input range.
We will send email with upper content to customers
who purchased the option in or after December 2014.

4 April 2015
The 10th anniversary of Mita Giken Co., Ltd.

13 March 2015 (added later)
Go Mita gave a lecture (invited lecture)
"Japanese Industrial Standard of laser safety and laser leak measurement"
at Optical radiation Club meeting, National Metrology Institute of Japan,
National Institute of Advanced Industrial Science and Technology.

November 2014 (added later)
Go Mita contributed "Laser safety and Japanese Industrial Standard"
to Optronics of December 2014, a monthly magazine by The Optronics Co., Ltd.

27 August 2014 (added later)
Go Mita gave a lecture "Laser safety and Japanese Industrial Standard"
at meeting of laser application technology study group
by Optoelectronics Industry and Technology Development Association.

4 April 2014
The 9th anniversary of Mita Giken Co., Ltd.

4 April 2013
The 8th anniversary of Mita Giken Co., Ltd.

4 April 2012
The 7th anniversary of Mita Giken Co., Ltd.

5 August 2011
We started to prepare this English version WEB page.
Sorry, most of the linked pages are not in English yet.
Links to Japanese pages are marked "(jpv)".



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Copyright 2011, Mita Giken Co., Ltd. All rights reserved.