Achromatic Doublet Lenses

Name: Achromatic Doublet Lenses
Brand: Shenzhen Solar Valley Scitech Development Co., Ltd.

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, these achromatic doublet lens 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 achromatic doublet is processed through milling, fine grinding, grinding and polishing processes. Our negative achromatic lens 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.

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Specifications of Achromatic Lenses for Sale

Achromatic doublet lens product parameter table
project	Indicator requirements
1.Material	Use various high and low refractive index optical glasses and optical quartz
2.Outer diameter	Round OD≤300mm, square L×W≤210×210mm ±0.05mm
3.Thickness	T≤100mm±0.02 according to customer requirements
4. Effective focal length	according to customers needs
5. Working distance	according to customers needs
6. Design wavelength	according to customers needs
8.Coating	AR anti-reflection coating R＜0.5% @λnm according to customer requirements
9. Eccentricity	according to customers needs
10. Effective aperture	ED＞90% aspheric area
11. Surface shape	Ultra-high precision Rt≤0.1μm, high precision Rt≤0.5μm, precision Rt≤1μm
12.Surface quality	60-40, 40-20, 20-10, 10-5

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, more achromatic lenses etc. wait.
Cemented Achromatic Doublet Material: Use various high and low refractive index optical glass and quartz substrates.
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
Achromatic Doublet Surface defect grade: 60-40, 40-20, 20-10, 10-5 Produced according to customer requirements.

6. Achromatic Doublet Coating: Coating according to customer requirements.

How to choose, cemented achromatic doublet lens or Air-spaced Achromats Lens

The choice between a cemented and air-spaced achromatic doublet lens primarily depends on the specific requirements of your optical system.

	Cemented Achromatic Doublet Lens	Air-Spaced Achromatic Doublet Lens
Ideal for	Applications where compact size and high stability are crucial. Systems operating in stable environmental conditions. Cost-effective solutions.	Applications demanding high optical performance. Systems operating in varying environmental conditions. Systems requiring a wide spectral range.
Advantages	Compact design High mechanical stability Generally lower cost	Greater design flexibility for aberration correction Less sensitive to temperature changes Wider range of glass material options
Disadvantages	Sensitive to temperature changes Limited glass material options	Larger size and weight Higher cost

Key Considerations in Choosing Between Cemented and Air-Spaced Achromatic Doublet Lenses

Optical Performance: If the highest possible image quality is required, an air-spaced doublet often provides better performance due to its greater design flexibility.

Environmental Conditions: If the lens will be exposed to varying temperatures or pressures, an air-spaced doublet is generally more suitable due to its higher stability.

Cost: Cemented doublets are typically less expensive to manufacture.

Size and Weight: If space and weight are constraints, a cemented doublet is the preferred choice.

Spectral Range: If the system operates in a wide spectral range, an air-spaced doublet might be necessary to achieve optimal performance.

carefully evaluate the specific requirements of your optical system to determine whether a cemented or air-spaced achromatic doublet is the best choice. Often, a combination of these lens types may be used in complex optical systems to achieve optimal performance.