To make persistent pursuit of optical system technology.
To make everyone around us happy through work.
To promote environmental conservation activities as an “ecological company”.

In the camera industry of the 20th century, we contributed greatly to the development of the optical industry as the only one company, that product the viewfinder parts and as the number one in the viewfinder unit production by using advanced optical system, precision photography, and microfabrication technology.

In the 21st century, optics has been expanded from visible light to ultraviolet and infrared rays, and to terahertz world, and applied and adopted in various fields, such as medical care, security, in-vehicle, robot, lighting, communication, and IoT.
We are growing as an optical technology company in the 21st century with young power, and we are striving toward a big dream.

We believe that the management philosophy is “the constant pursuit of optical technology and the happiness of all the people around us through work.”

We intend to contribute to society by developing the company and striving to further improve the welfare of our employees.

We look forward to your continued understanding and patronage.

Toa Optical Technologies Ltd.
CEO Masaharu Hori

Toa Optical Technologies, LTD.
Masaharu Hori
Head Office
1180, Komiyamachi, Hachioji-city, Tokyo 192-0031, Japan
(2 minutes walk from the south exit of Komiya Sta. on the JR Hachiko Line)
Phone: +81-42-644-1415 / FAX:+81-42-644-4547地図
April 1, 1960
Paid-in Capital
30 million yen (Authorized Capital 120 million yen)
Mitsubishi UFJ Bank Mitaka Branch
Sumitomo Mitsui Banking Corporation Hachioji Branch

Apr. 1960
Founded in Musashino City, Tokyo (manufacturing camera finder parts)
Apr. 1961
Established Toa Rikagaku Research Institute Co., Ltd. in Mitaka City, Tokyo (capital 500,000 yen)
Sep. 1963
Acquired a factory building in Setagaya-ku, Tokyo and relocated the head office
Nov. 1965
Increased capital to 2 million yen
Nov. 1969
Established a land acquisition factory in Hachioji, Tokyo, making it the main production factory
May  1971
Increased capital to 4 million yen
Aug. 1971
Land acquisition factory expanded next to Hachioji factory
Nov. 1977
Increased capital to 6 million yen
Nov. 1978
Increased capital to 8 million yen
Mar. 1979
Opened a unit assembly factory in Hino, Tokyo
Nov. 1979
Increased capital to 10 million yen
Dec. 1982
Hachioji Factory Reconstruction (Reinforcing Bar 3-story Factory / Office)
Dec. 1984
Acquired a factory building in Mitaka City, Tokyo and opened a unit assembly and parts processing factory
Oct. 1985
The Plaza Accord begins to shift export industries and production bases to Southeast Asia
Apr. 1988
Headquarters moved to Hachioji
May 1992
Hachioji factory extension (reinforcing bar two-story plastic lens molding factory / office)
Oct. 1996
Specializing in Hachioji Headquarters Factory as an optical system (lens system) technology center
Apr. 1999
Increased capital to 30 million yen
Oct. 1999
Started as a new technology center for the optical industry
Jan. 2004
Established lens molding factory in Nagano prefecture
Jan. 2008
Acquired environmental management system eco-stage certification
Apr. 2010
Published company history (held by the University of Tokyo and other university libraries and the National Diet Library)
May 2010
Quality management system, ISO9001 certification acquired
Mar. 2011
Opened Osaka office
Aug. 2012
Full-scale operation of Asakawa Factory (Hachioji / dicing mass production line)
Apr. 2013
Expansion of R & D clean room (head office)
Apr. 2013
Established a polishing factory
Oct. 2013
Expanded Tama Development Center
Mar. 2015
Environmental management system ・ ISO14001 certification acquired
Sep. 2015
Started optical design of the illumination system at Tama Development Center.
May. 2019
Built the 2nd Factory in Hachioji City, Tokyo to expand the precision machining business.
Dec. 2020
Relocated West Japan Office to Itami City, Hyogo
May. 2021
Established the First Factory in Hachioji City, Tokyo to expand the thin film business.

  • Head Office, Factory

    1180, Komiyamachi, Hachioji-shi, Tokyo 192-0031, Japan
    Phone: +81-42-644-1415
  • First Factory

    1085-6 Shimoongatamachi, Hachioji-shi, Tokyo 192-0154, Japan
  • 2nd Factory

    316-7 Komiyamachi, Hachioji-shi, Tokyo 192-0031, Japan
  • West Japan Office



We will work on continuous improvement to maintain an appropriate, reasonable and effective environmental management system and improve environmental performance.
In order to achieve this environmental policy, we will always examine the organization and the circumstances surrounding it.
We will set environmental and make efforts to achieve them, taking into account risks, opportunities, environmental aspects, and compliance obligations.
We will review their validity every year through internal audits and management reviews.

1. Fulfillment of compliance obligations

We will sincerely implement the legal and other requirements that an organization must comply.

2. Promotion of resource conservation and pollution prevention

We will make efforts to appropriately and effectively save resources, save energy, reduce waste, and prevent environmental pollution which might be caused by our activities.

3. Education / enlightenment and raising awareness of all employees

All employees carry out business improvement education and enlightenment activities utilizing IT, regarding environmental policies and their contribution to the effectiveness of EMS.

October 11, 2016
Toa Optical Technologies Ltd.
CEO Masaharu Hori

ISO 14001

ISO14001:2015 (Since March 16, 2015)
Name of certification body
BV – Bureau Veritas
Certification registration number
Scope of supply
Design, development and manufacture of optical parts and optical units (HQ / Factory)

Notice of acquisition of environmental management system ISO14001 certification

※We acquired Eco Stage certification on January 17, 2008.
Currently, we are developing an environmental management system based on the ISO14001 standard.

August 21, 2017
Toa Optical Technologies Ltd.
CEO Masaharu Hori

Conflict Minerals Procurement Policy

We risk procuring conflict minerals (tantalum, tungsten, tin, gold) that are a direct or indirect source of funding for human rights abusers in the Democratic Republic of the Congo (DRC) and neighboring countries. We will fully cooperate with our customers’ responsible procurement activities to reduce the problem.
As a midstream company, we will conduct a supply chain survey using the latest version of the EICC-GeSI * reporting tool (CFSI_CMRT) with the aim of ensuring the reliable procurement of conflict-free minerals.
Along with the system for managing chemical substances contained in products, we have established a system for managing conflict mineral procurement information, and will promptly respond customers’ requests.

※EICC-GeSI: A non-profit organization of members of the Information and Communication Technology (ICT) industry

By protecting information assets in the information-oriented society from threats such as accidents, disasters, and crimes, we aim to win the satisfaction and trust of our customers and other stakeholders.
We have established a basic information security policy and will use it as a guideline for our information security efforts.

1. Development of internal organization and information security policy

We will maintain the necessary organizations and improve security.
We will operate the necessary information security policy as an internal rule.

2. Management commitment

The management supports information security efforts and leads continuous improvement.

3. Compliance with laws and regulations

Employees comply with the laws and regulations regarding information assets and the security requirements of interested parties.

4. Employee efforts

Employees will acquire the knowledge and skills needed to maintain and improve information security and ensure their commitment to information security.

5. Response to violations and accidents

We will reduce the infulence of violations and accidents by establishing a system for responding to information security-related laws and regulations, violations related to contracts with customers and information security accidents.

May 9, 2018
Toa Optical Technologies Ltd.
CEO Masaharu Hori


“SECURITY ACTION” is a self-declaration system for information security measures for small and medium-sized enterprises promoted by the Information-technology Promotion Agency (IPA), which aims to realize a safe and secure IT society.
We declare that we have implemented the information security in-house diagnosis and the formulation and publication of the information security policy, which are the two-star requirements.

External link: SECURITY ACTION (Information-technology Promotion Agency: IPA)