Precision Glass Optics & Applications

Precision optics lenses are broadly classified into singlets, doublets, and triplets, with different configurations and materials for specific applications. Singlets are single-element lenses, doublets combine two lenses, and triplets use three, each design influencing optical performance. Achromatic doublets are a specific type of doublet designed to reduce chromatic aberration.

Here's a more detailed explanation from FSU website

Plano-Convex Lenses
Plano-Concave Lenses

Singlet Lenses:

  • Definition: A single-element lens.

  • Types:

    • Plano-Convex:

    • Plano-Concave:

    • Bi-Convex: Both surfaces convex.

    • Bi-Concave: Both surfaces concave.

  • Application: Used for general focusing, collimation, and imaging.

Bi-Concave Lenses
Bi-Convex Lenses
Meniscus Lenses
blue and white smoke illustration

Doublet Lenses:

  • Definition: A lens comprised of two separate lenses cemented together.

  • Types:

    • General Doublet: Two lenses of different materials.

    • Achromatic Doublet: Designed to reduce chromatic aberration by combining a high-index (crown glass) lens with a low-index (flint glass) lens.

  • Application: Used for high-quality imaging, reducing chromatic aberration, and focusing laser beams.

Triplet Lenses:

  • Definition: A lens comprised of three separate lenses cemented together.

  • Types:

    • Achromatic Triplet: Designed to further reduce chromatic aberration and spherical aberration.

  • Application: Used for very high-quality imaging, where even finer correction of aberrations is needed.