High‑precision Optical Components_Lens_Optical Lens Processing‑Changshu Sanmu Technology Co., Ltd.

Process flowabout us

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Contact Us

Li Han: +86 18014870827

Qiao Li: +86 13372126414

Email: smkj@smkj.email

Website: https://www.cssanmu.com

Address: 2/F, Building 14, Shenzhou Intelligent Manufacturing Park, No.12 Beixin Road, Shajiabang Town, Changshu City, Jiangsu Province, P.R.China

01 Cutting

Milling Cutting

The cutting machine trims the surface of glass blanks and removes excess glass material, to achieve approximate shape and dimensions close to drawings, preparing for fine grinding.

Blank Rough Forming Cutting
02 Fine‑Grinding

Fine Grinding Grinding

Special diamond grains perform fine grinding on glass surfaces to meet requirements on surface roughness, surface figure error (fringe N) and center thickness (T).

Diamond Surface Figure Fringe N
03 Lapping

Polishing Polishing

① Rough polishing: Remove damaged layers generated in fine‑grinding to meet specified surface quality.
② Fine polishing: Achieve drawing‑required fringes and local fringes, eliminate surface scratches, and obtain regular transparent surfaces.

Damaged Layer Fringe Transparent Surface
04 Centering

Centering‑Edging Centering

Lenses are edged by automatic centering machines to obtain qualified outer‑diameter dimensions for customer assembly.

Outer Diameter Assembly Centering Machine
05 Vapor Deposition

Coating Coating

Single‑layer or multi‑layer films are deposited on component surfaces to enhance transmittance or reflectance and satisfy optical performance requirements.

Transmittance Reflectance Multi‑layer Film
06 Cementing

Cementing Cementing

Two or more lenses of different refractive indices with matched convex‑concave curvature radii are bonded with optical cement (refractive index 1.6) for optical performance compensation.

n=1.6 Compensation Cementing
07 Anti‑Glare

Edge Blackening Edge Blackening

Absorb stray light at lens edges, reduce stray‑light coefficient inside optical systems, and suppress reflected light from lens barrels and apertures.

Stray Light Lens Barrel Aperture