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Need electroformed copies of Fresnel lens

Overhead Projectors
(vintage)
projector_overhead_vintage

Quickstart:
Fresnel lenses require less size and material than a conventional convex lens. Their earliest use was in lighthouses. See https://en.wikipedia.org/wiki/Fresnel_lens for a good understanding of the history and science.
But the principles which Fresnel lenses employ do not necessarily imply or require large, heavy glass. For example, before the internet and our digital age it was very common to do presentations with an 'overhead projector' ⇨
where a sheet of transparent paper was laid on the glass and its image projected onto a screen. The Fresnel lenses in these devices were a thin sheet of plastic embossed with the correct Fresnel patterns by stamping or molding them with electroformed ⇐ huh? nickel molds.

RFQ: I am looking for a shop that can produce electroformed copies of a Fresnel lens. The lenses have a 25 mm radius and the grooves are 0.2 mm deep.

Fernando E [surname deleted for privacy by Editor]
1996

Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).

Q. Fresnel Lens is a new subject to me. I also need some help on this topic.

GUOLIN P [surname deleted for privacy by Editor]
UAH - Huntsville, Alabama
1997

A. Hi Guolin. Berl Stein is the guy I'd contact if I were you. He was employed by Fresnel Optics / Reflexite Technology, and is now president of NiCoForm [a finishing.com supporting advertiser].

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.
(This entry re-checked and still valid, September 2025)

A. Fernando, Goulin and anyone else needing a quote on a Fresnel lens. Call Donna at Fresnel Optics (Reflexite Technology), Rochester, NY to get a quote.

Cheers from PlaterB

"PlaterB" Berl Stein
NiCoForm, Inc.

Rochester, New York

"Solar Energy projects for the Evil Genius"
solar_energy_projects

on eBay or Amazon
or AbeBooks

(affil link)

RFQ: Dear Sirs,

For a job we are going to produce, we need 1000 Fresnel lens 25.5 x 18 cm.(about).

We do not need particular enlargement.

If someone could help me giving directions, thank you in advance,

Luca B [surname deleted for privacy by Editor]
- Fusina, Italy

Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).

A. I run an electroforming facility which can create the electroforms for the fresnel optics. We duplicate very precise holographic microstructures with nickel process. These can be either hard or soft and thickness tolerances are within microns.

Tim Dolan
Bridgeport, Connecticut

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