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Half-Ball Lenses

  • Broad diameter range: 0.3mm to 100mm
  • Substrate Materials: Sapphire, N-BK7, UV Fused Silica, Ruby, Ge, ZnSe, ZnS, and other High-Refractive-Index Glass
  • AR coatings optional
  • Applications: fiber coupling, objective lenses for endoscopes, bar code scanning, and sensors, pre-forms of Aspheric Lenses
Inquire for custom product  
Code Types Material Diameter EFL Coating Unit Price Delivery Cart
1106-001 Half-Ball N-BK7 1.0mm - None $8.0 2~3 Days
1106-002 Half-Ball UV Fused Silica 1.0mm - None Inquiry Inquiry
1106-003 Half-Ball Sapphire 1.0mm - None Inquiry Inquiry
1106-004 Half-Ball N-BK7 2.0mm - None $8.0 2~3 Days
1106-005 Half-Ball UV Fused Silica 2.0mm - None $8.5 2~3 Days
1106-006 Half-Ball Sapphire 2.0mm - None $10.0 2~3 Days
1106-007 Half-Ball N-BK7 3.0mm - None $8.0 2~3 Days
1106-008 Half-Ball UV Fused Silica 3.0mm - None $8.5 2~3 Days
1106-009 Half-Ball Sapphire 3.0mm - None Inquiry Inquiry
1106-010 Half-Ball N-BK7 4.0mm - None $8.0 2~3 Days
1106-011 Half-Ball UV Fused Silica 4.0mm - None $8.5 2~3 Days
1106-012 Half-Ball Sapphire 4.0mm - None $12.0 2~3 Days
1106-013 Half-Ball N-BK7 5.0mm - None $8.0 2~3 Days
1106-014 Half-Ball UV Fused Silica 5.0mm - None $11.0 2~3 Days
1106-015 Half-Ball Sapphire 5.0mm - None $12.0 2~3 Days
1106-016 Half-Ball N-BK7 6.0mm - None $8.0 2~3 Days
1106-017 Half-Ball UV Fused Silica 6.0mm - None $12.0 2~3 Days
1106-018 Half-Ball Sapphire 6.0mm - None Inquiry Inquiry
1106-019 Half-Ball N-BK7 7.0mm - None $8.0 2~3 Days
1106-020 Half-Ball UV Fused Silica 7.0mm - None $12.0 2~3 Days
1106-021 Half-Ball Sapphire 7.0mm - None Inquiry Inquiry
1106-022 Half-Ball N-BK7 8.0mm - None $8.0 2~3 Days
1106-023 Half-Ball UV Fused Silica 8.0mm - None $12.0 2~3 Days
1106-024 Half-Ball Sapphire 8.0mm - None Inquiry Inquiry
1106-025 Half-Ball N-BK7 9.0mm - None Inquiry Inquiry
1106-026 Half-Ball UV Fused Silica 9.0mm - None $12.0 2~3 Days
1106-027 Half-Ball Sapphire 9.0mm - None $21.0 2~3 Days
1106-028 Half-Ball N-BK7 10.0mm - None $8.0 2~3 Days
1106-029 Half-Ball UV Fused Silica 10.0mm - None $12.0 2~3 Days
1106-030 Half-Ball Sapphire 10.0mm - None $23.0 2~3 Days

Ball Lenses are a special form of biconvex lenses which inherit the geometry of a ball (which implies completely spherical surfaces), manufactured from a single material with the optical transmission sited in the wavelength region of interest. The predominant function of ball lenses is light collimation/coupling for optical fibers (e.g. laser to fiber coupling, fiber to fiber coupling), with other versatile possibilities to be incorporated in miniature optics (e.g. Barcode Scanning, Sensors, or as objective lenses, etc.). Ball Lenses could also be considered as pre-forms aspheric lenses. One advantage of a ball lens is its short  Back Focal Length (BFL), a trait that cuts down the distance from the optic to the fiber and is exceptionally useful when the installation space is rather tight, and compact dimension could simultaneously reduce the production cost. Additionally, a ball lens is rotationally symmetric, which enhances the ease of aligning and positioning.

Half-Ball Lenses are variants of ball lenses, obtained through simply cutting the ball lenses in half.Due to the ease of mounting brought by the one flat surface, half ball lenses are ideal for applications where more compact designs are required.

Hangzhou Shalom EO provides both stocked and custom Half Ball Lenses made from N-BK7, UV Fused Silica, Sapphire, Ruby, Ge, ZnSe, ZnS, and other optical glass materials with high refractive indices, with a broad diameter range from 0.3mm to 100mm and optional AR coatings.


Material Selection Guidance:

N-BK7 Half Ball Lenses:  

N-BK7 is a high-quality borosilicate crown glass requisite for the fabrication of optics. It is one of the most prevalent optical glass, and with its transmission range from visible to near-IR low level of inclusions, and chemical/mechanical firmness, is an option whenever the extra benefits of UVFS (e.g. high transmission in the UV region) are not obligatory. It is worth noting that under normal conditions N-BK7 has relatively higher losses through higher absorption and scattering and therefore is more appropriate for applications of low/medium power levels. N-BK7 are designed to adapt to various processing, therefore N-BK7 ball lenses are also ideal pre-forms of Aspheric Lenses.

  • Working Wavelength Range: 350nm to 2200nm 
  • Refractive Index: 1.51680 @ 587.5618 nm
  • Thermal Expansion: 7.1 x 10-6/K

UV Grade Fused Silica Half Ball Lenses : 

UV Grade Fused Silica is amorphous state silicon dioxide made from fusing SiCl4 stones with high purity oxyhydrogen flame. The most outstanding attribute of UV Fused Silica is its high transmission rate in the ultraviolet region. The low coefficients of thermal expansion contribute to the high thermal stability. Additionally, the material also features high chemical resistance and minimal fluorescence.

  • Working Wavelength Range: 200nm to 2200nm 
  • Refractive Index: 1.458
  • Thermal Expansion: 0.57 x 10-6/℃

Sapphire Half Ball Lenses:

Optical grade Single Crystal Sapphire Ball Lenses and Half Ball Lenses, with unrivaled surface hardness, great heat resistance, and durability to chemical corrosions, is particularly suitable for operating environments that are subject to high heat. The broad transmission range of Sapphire from 0.15-5.5μm is also impressive. The large Refractive Index of Sapphire suggests decreased spherical aberration.

  • Working Wavelength Range: 170nm-5500nm
  • Refractive Index: 1.77
  • Compressive Strength (psi): 300,000
  • Thermal expansion: 5.6x10-6/K (parallel), 5.0x10-6/k (perpendicular)

Specifications:

Materials Sapphire, N-BK7, UVFS, Ruby, Ge, ZnSe, High-Refractive-Index Glass Lens Type Half Ball Lens
Diameters 0.3mm-100mm Sphericity Standard 2.0μm
Working Wavelength Range UV to IR Irregularity (@633nm) λ/4
Surface Quality 40/20 S/D Coating None or Custom AR Coatings

Drawing:


8.0mm Diameter Sapphire Half-Ball Lens

8.0mm Diameter Sapphire Half-Ball Lens

5.0mm Diameter N-BK7 Half-Ball Lens

5.0mm Diameter N-BK7 Half-Ball Lens

6.0mm Diameter Sapphire Half-Ball Lens

6.0mm Diameter Sapphire Half-Ball Lens