Lenses (except ophthalmic) manufacturing · Colorado

Rainbow Research Optics, LLC

Centennial, CO · ~49 workers · 7 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
4.1
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Rainbow Research Optics, LLC runs at 123% of its industry's injury rate - more dangerous than the typical Lenses (except ophthalmic) manufacturing workplace, earning a grade D.

Rainbow Research Optics, LLC: 4.1 TCR = 123% of Lenses (except ophthalmic) manufacturing BLS 3.3 · 7y Form 300A (see methodology below)

Rainbow Research Optics, LLC safety composite

Rainbow Research Optics, LLC scores strongest on dart rate (safer than 77% of same-industry peers) and weakest on total case rate (tcr) (safer than 12%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

D

44/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 4.06 per 100 workers

Safer than 12% of industry peers

DART rate
B 0 per 100 workers

Safer than 77% of industry peers

Fatalities
D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−9.0

2017→2024

Rainbow Research Optics, LLC injury rate improved

Rainbow Research Optics, LLC's TCR fell 9.0 from 9.0 in 2017 to 0.0 in 2024. Peak filing year was 2021 at 9.6 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=9.0 · 2018=2.8 · 2020=4.7 · 2021=9.6 · 2022=0.0 · 2023=2.5 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 333314 · Centennial, CO ABOVE-IND · SMALL

Grade D · TCR 4.1 · 123% of ind

  • DART 0.0 DART
  • RANK #7/7
  • PHOTO Thorlabs Lens System…
  • BOOK 7y book
  • INJ 9 inj
  • SIZE ~49 FTE

Nearest TCR peer: Thorlabs Lens Systems, Inc. (0.0 TCR gap)

Read with this employer → · Industry book → · Colorado employers → · Look up another →

Rainbow Research Optics, LLC in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Rainbow Research Optics, LLC averages 4.1 TCR (123% of the Lenses (except ophthalmic) manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Rainbow Research Optics, LLC TCR series: 2017=9 · 2018=2.8 · 2020=4.7 · 2021=9.6 · 2022=0 · 2023=2.5 · 2024=0 · BLS 3.3

Where Rainbow Research Optics, LLC falls in its industry

145 Lenses (except ophthalmic) man establishments

Safer than 12% of graded establishments in this industry, whose median TCR is 1.8.

More dangerous than peersSafer than peers

Narrower to Colorado alone (the establishments it most directly competes with for workers and contracts): ranked #7 safest of 7 Lenses (except ophthalmic) man employers in Colorado.

Rainbow Research Optics, LLC (49 employees, TCR 4.1) among 29 same-industry peers, split at the industry median of 80 employees and a TCR of 1.8 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 02004006008001,000 051015 Average employees Total Case Rate Rainbow Research Optics, LLC
Rainbow Research Optics, LLC (49 employees, TCR 4.1) among 29 same-industry peers, split at the industry median of 80 employees and a TCR of 1.8

Rainbow Research Optics, LLC has fewer employees than the Lenses (except ophthalmic) manufacturing median and a higher injury rate than the industry's median TCR of 1.8. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 0.0 0.0 0 0 0
2023 2.5 0.0 1 0 0
2022 0.0 0.0 0 0 0
2021 9.6 0.0 1 0 0
2020 4.7 2.3 1 1 0
2018 2.8 1.4 2 0 0
2017 9.0 0.0 4 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

333314 · CO · Centennial

145 Lenses (except ophthalmic) manufacturing employers nationwide with a credible TCR · 9,007 rated employers in Colorado with headcount on file · 204 employers in Centennial, CO · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Thorlabs Lens Systems, Inc. 4.1 TCR
NAICS-TCR Gooch & Housego, California 4.0 TCR
NAICS-TCR HIVIZ Shooting Systems 4.2 TCR
NAICS-TCR Williams Gun Sight Company 4.4 TCR
STATE-SIZE Konisto Companies, LLC. 49 FTE
STATE-SIZE Summit County Ops Center-650 49 FTE
STATE-SIZE Tralon Homes, LLC 49 FTE
STATE-SIZE KW Woodworks Inc. dba KW Construction & Restoration 49 FTE
CITY-NEAR Centura Corporate 2,994 FTE
CITY-NEAR Corporate 2,726 FTE
CITY-NEAR Western States Fire Protection 1,876 FTE
CITY-NEAR 4028-ARW02 1,185 FTE
NAT-TCR Acuity Specialty Hospital - Ohio Valley, L.P. (d/b/a/ Select Specialty Hospital - Weirton) 4.1 TCR
NAT-TCR Indiana Department of Child Services - Vigo County 4.1 TCR
NAT-TCR Fabrication 1 4.1 TCR
NAT-TCR PL Developments - Clinton plant 4.1 TCR
NAT-SIZE Sequoia Springs Senior Living Community 49 FTE
NAT-SIZE 104768 - GPA - CB1 Realignment 49 FTE
NAT-SIZE Alttran, Inc. 49 FTE
NAT-SIZE City of Industry, CA - 15541 Gale Avenue 49 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022, 2021, 2020, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.