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Achromatic Doublet Lenses

Achromatic doublets are suitable for eliminating chromatic aberration and reducing spherical aberration on the image plane. Typically by gluing two elements together or mounting both elements in a housing, they produce a smaller spot size than comparable single-line lenses. Suitable for high-power laser systems, measurement, and imaging applications such as projection, photography, fluorescence microscopy, image relay, inspection, spectroscopy, and more. The single lens in the cemented lens is processed through milling, fine grinding, grinding and polishing processes, and can achieve optical surface shape accuracy ≤ 0.1 micron and surface roughness Ra ≤ 0.01 micron. The two lenses are glued together as a double lens, and a centering device with a UV photosensitive adhesive curing device is used to conduct precision gluing and eccentricity testing to produce an achromatic doublet lens.

achromatic doublet
achromatic doublet lens

Specifications of Achromatic Doublet Lenses


Achromatic doublet lens product parameter table
projectIndicator requirements
1.MaterialUse various high and low refractive index optical glasses and optical quartz
2.Outer diameterRound OD≤300mm, square L×W≤210×210mm ±0.05mm
3.ThicknessT≤100mm±0.02 according to customer requirements
4. Effective focal lengthaccording to customers needs
5. Working distanceaccording to customers needs
6. Design wavelengthaccording to customers needs
8.CoatingAR anti-reflection coating R<0.5% @λnm according to customer requirements
9. Eccentricityaccording to customers needs
10. Effective apertureED>90% aspheric area
11. Surface shapeUltra-high precision Rt≤0.1μm, high precision Rt≤0.5μm, precision Rt≤1μm
12.Surface quality60-40, 40-20, 20-10, 10-5


Features of Achromatic Doublet Lenses

Features of Achromatic Doublet Lenses
  • One-stop customized production: Solar Valley processes various round and square achromatic doublet lenses according to customer requirements, such as positive achromatic lenses, negative achromatic lenses, aspheric achromatic lenses, etc. wait.

  • Material: Use various high and low refractive index optical glasses and optical quartz.

  • Achromatic doublet lens properties: Tianyanggu strictly matches the diameter and center thickness to ensure adhesive thickness and precise center thickness control to meet high precision requirements. Tianyang Valley uses UV curing/gluing technology on different glass materials to dynamically adjust the optical center of the two parts during the gluing process, eliminating the overall optical center eccentricity after gluing. For high refractive index optical materials, use high refractive index UV photosensitive glue to precisely control the center thickness tolerance of the glued parts, which can be used for optical designs that are very sensitive to air separation.

  • Explanation of product size indicators: Maximum outer dimension of achromatic doublet lens: OD≤φ300mm Maximum outer dimension of square achromatic doublet lens: L×W≤210×210mm Center thickness of achromatic doublet lens T≤100mm Achromatic doublet lens The following accuracy levels can be achieved according to customer requirements: Ultra-high precision level: surface error <0.1μm, surface roughness <0.01μm High precision level: surface error <0.5μm, surface roughness <0.05μm Precision level: surface error <0.05μm 1μm, surface roughness <0.1μm

  • Surface defect grade: 60-40, 40-20, 20-10, 10-5 Produced according to customer requirements. 6. Coating: Coating according to customer requirements.

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