telecentric lens

noun

: a lens system in which either the entrance pupil or the exit pupil is at infinity and which is used in optical measuring devices to eliminate parallax between an image and the scale for its measurement

The Ultimate Dicitonary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now