# Circle Optics funding: rounds and investors

> Circle Optics has raised $450K across 1 round since 2024. Investors include National Science Foundation, Newchip Accelerator and Luminate.

Source: https://millionrounds.com/company/circle-optics (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *Circle Optics*

One round we have observed, with the 3 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Govtech

Funding summary Updated 26 Oct 2026

**$450K** raised across 1 round since 2024, from 1 source

- **Latest round:** Grant, $450K May 2024
- **Investors:** 3

See who backed them

## The rounds

- **May 2024** Grant **$450K** [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Newchip Accelerator](https://millionrounds.com/fund/newchip-accelerator) [Luminate](https://millionrounds.com/fund/luminate-accelerator) Source recorded

## Everyone who backed them

[National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round

[Newchip Accelerator](https://millionrounds.com/fund/newchip-accelerator) Accelerator **1** round

[Luminate](https://millionrounds.com/fund/luminate-accelerator) Accelerator **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=circle-optics).

## Also claim to have backed them

These 4 firms list Circle Optics as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[SDH Capital](https://millionrounds.com/fund/sdh-capital) VC firm Per its own site

[Skull Diamond & Heart Capital](https://millionrounds.com/fund/skull-diamond-and-heart-capital) VC firm Per its own site

[GENIUS NY](https://millionrounds.com/fund/genius-ny) Accelerator Per its own site

[Skull, Diamond, and Heart Capital, LLC](https://millionrounds.com/fund/skull-diamond-and-heart-capital-llc) VC firm Per its own site

## Quick answers about Circle Optics

### Who invested in Circle Optics?

Circle Optics's investors include National Science Foundation, Newchip Accelerator and Luminate.

### How much has Circle Optics raised?

Circle Optics has raised $450K across 1 round since 2024.

### When did Circle Optics last raise?

Circle Optics's most recent round was a Grant of $450K in May 2024.

### What was Circle Optics's biggest round?

Its most recent round, $450K in May 2024, is also its largest on record.

### Who backed Circle Optics first?

Circle Optics's first round on record, in May 2024, was backed by National Science Foundation, Newchip Accelerator and Luminate.

### What stage is Circle Optics at?

Circle Optics's latest named round is a Grant, in May 2024.

### Where is Circle Optics based?

Circle Optics is based in the United States.

## Companies like Circle Optics

In the same sector, and raised in the last eighteen months.

[**Longeye** $25M · Oct 2026](https://millionrounds.com/company/longeye)[**SCATR** $6.6M · Oct 2026](https://millionrounds.com/company/scatr)[**FSH Technologies** $45M · Aug 2026](https://millionrounds.com/company/fsh-technologies)[**Apaluma** $5.5M · Jul 2026](https://millionrounds.com/company/apaluma)[**BRINC** $125M · Jul 2026](https://millionrounds.com/company/brinc)[**Arkenstone Defense** $35M · Jul 2026](https://millionrounds.com/company/arkenstone-defense)

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