Canon Calculates Product Greenhouse Gas Emission Reduction Contribution Based on International Standard 'IEC 63372' and Obtains Third-Party Verification

Canon has calculated the contribution to greenhouse gas (GHG) emission reduction (hereinafter, 'reduction contribution') of its products and received third-party verification from the Sustainable Management Promotion Organization (hereinafter, SuMPO). This calculation and verification are based on the international standard 'IEC 63372' (Note 1) for calculating reduction contribution, issued by the International Electrotechnical Commission (hereinafter, IEC) in January 2026. This marks the first instance in Japan of obtaining third-party verification by SuMPO based on this standard (Note 2).

The evaluated ophthalmic device 'OCT-R1'

As climate change response becomes a global challenge, companies are required not only to reduce GHG emissions from their own business activities but also to contribute to overall societal emission reduction through their products and services. Against this backdrop, efforts are underway to quantify the extent to which replacing conventionally used products and services with those having a lower environmental impact contributes to overall societal GHG reduction, measured as 'reduction contribution.' By disclosing this indicator based on consistent rules, customers can use it as a decision-making criterion when introducing products, and transparent information disclosure can lead to evaluations by financial institutions, creating a virtuous cycle towards a decarbonized society.

Until now, reduction contributions were calculated individually by each company based on industry association guidelines, and the calculation methods were not necessarily unified. In this context, discussions towards international standardization were advanced at the IEC with the aim of proper calculation and disclosure of reduction contribution, and Canon participated in the rule-making discussions. In January 2026, the international standard 'IEC 63372,' which defines the calculation method for reduction contribution associated with the use of electrical products, was issued, establishing a globally unified evaluation standard for the electrical and electronics industry.

Canon has now calculated the reduction contribution for its ophthalmic device 'OCT-R1' (Note 3) in compliance with 'IEC 63372' and, for the first time in Japan, received third-party verification of the calculation results from SuMPO. The 'OCT-R1' is an ophthalmic device that combines OCT (Note 4) and fundus camera functions in a single unit. As a result of this verification, a reduction in overall societal GHG emissions is expected compared to the conventional use of two separate devices, an OCT and a fundus camera (Note 5). In this calculation, the comparison conditions, assumptions, and calculation methods were clarified, and third-party verification by SuMPO was obtained to ensure the transparency and reliability of the evaluation.

Canon will continue to expand the range of products for which it calculates reduction contribution, contribute to climate change countermeasures across society through its products and services, and work towards the realization of a sustainable society.

Note 1: An international standard on 'reduction contribution' issued by the International Electrotechnical Commission (IEC) in January 2026, indicating how much a product or service contributes to overall societal GHG emission reduction. Please refer to the IEC website for details. https://webstore.iec.ch/en/publication/67618

Note 2: As of June 10, 2026 (according to Canon research).

Note 3: The 'OCT-R1' enables auto-capture of OCT/OCTA and fundus camera images. Please refer here for details.

https://global.canon/ja/news/pdf/2023/20230929a.pdf

Note 4: Abbreviation for Optical Coherence Tomography.

Note 5: Comparison as of May 2026 with the conventional models 'OCT-A1' (released April 2019) and 'CR-2 AF' (released April 2015).