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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryIndustryChemical IndustryWidnauOpcos AG
Opcos AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of OPCOS AG is the development, manufacture and testing of optical coatings and components, including anti-reflective coatings, mirrors, beam splitters, filters, absorbers and neutral density filters. The company also offers services such as layer development, sampling, series production, testing of optical properties and environmental resistance, as well as consulting.

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Offering

Products & services

Industry:Chemical Industry
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Opcos AG

✓ Offered7
Coatings
Anti-reflection, mirror, beam-splitter, filter, absorber and neutral-density filter coatings, as well as special coatings for optical components.
Coating development
Creation of product-specific coating processes, including determination of process parameters for cleaning, coating and characterisation, with documentation.
Sample submission
Rapid implementation of customer requirements, from specification capture to shipment of initial samples.
Series production
Coating of substrates according to developed processing methods as single items or in large batches, with short lead times.
Testing of optical properties
Measurement of optical properties with spectrophotometers in the wavelength range from 185 to 5200 nm.
Consulting
Consulting on optical coatings and their development, manufacturing and characterisation.
Environmental resistance testing
Environmental testing for optical coatings and associated components.
Trust & reputation

ranQ Trust Score of Opcos AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Opcos AG scores 60.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Opcos AG scores 76.6 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.79.212%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Opcos AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Opcos AG scores 54.3 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.54.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Opcos AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Nöllenstrasse 15
9443 Widnau
Opening hours
Mon
08:00 - 20:00
Tue
08:00 - 20:00
Wed
08:00 - 20:00
Thu
08:00 - 20:00
Fri
08:00 - 20:00
Sat
08:00 - 20:00
Sun
08:00 - 20:00

At a glance

Legal form
Corporation
UID
CHE-399.727.182
Founded
2018 · 8 years
Last commercial register change
January 28, 2021
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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