Free template · custom optics

The custom lens spec template — every field a vendor needs to quote.

This is the same structure a good optical engineer would put on the sheet. Fill it in yourself — each field has a plain-English hint — or answer a short interview and SpecBuildr fills it in for you, checked for major physics violations.

Fill it in for me → Free · no account · ~5 minutes

The template

Copy it into your doc, or print this page. Every field carries a plain-English hint.

1.0 Application & system

Application / use case____________ (what the lens is for — camera module, scanner, laser system…)

Detector____________ (sensor model & pixel size, or 'human eye')

Working distance & object size____________ (how far away, how big the thing you're imaging is)

Volume____________ (one prototype, hundreds, or tens of thousands)

2.0 Core optical requirements

Focal length____________ (how far away things focus)

F-number (aperture)____________ (how much light it collects — lower = brighter)

Field of view____________ (the angle or object area it must cover)

Wavelength band____________ (visible, near-IR, a specific laser line — never just 'light')

Resolution target____________ (MTF / spot size — good enough for the sensor, or for the eye)

Distortion limit____________ (how much geometric warping the application tolerates)

3.0 Mechanical & environment

Max envelope____________ (diameter × length it must fit inside)

Mechanical interface____________ (mount / flange / how it seats in the assembly)

Environment____________ (temperature range, humidity, shock, sealing)

4.0 Standards baseline

Surface tolerances____________ (ISO 10110 commercial/precision baseline unless noted)

Coatings____________ (AR / durability — ranges verified by the manufacturer)

Pre-quote checklist

Before you send it out, the mistakes vendors see every week:

Wavelength band is named — not just “visible.”
Focal length, f-number, and envelope are mutually possible (fast + long + tiny doesn't exist).
Resolution is tied to the detector — pixel size or eye-limited, not a vibe.
Tolerances only where the application needs them — precision is money.
Environment stated — temp, humidity, sealing decide coatings and mounting.
Volume stated — it decides glass vs. molded polymer.

Or skip the blank page entirely.

Answer a short interview — SpecBuildr fills this exact structure in for you, checked for major violations, ready to send for a quote.

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