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Product Description

Optical Material: N-BK7/S-LAH64 or equivalent materials
Uncoated
Application: Condensing, collimating, and detection

LBTEK precision polished aspheric lenses are commonly made from two materials: N-BK7 and S-LAH64. Both materials exhibit high transmittance in the visible and near-infrared wavelength ranges. S-LAH64 has a higher refractive index than N-BK7, making it typically suitable for fabricating lenses with high numerical aperture and short focal lengths. Compared to conventional spherical lenses, aspheric lenses feature a larger numerical aperture (NA), a lower f-number (f/#), and reduced spherical aberration, enabling them to achieve diffraction-limited performance and superior optical characteristics. This can reduce the number of system components, thereby simplifying system design. Compared to molded aspheric condenser lenses, precision polished aspheric lenses offer larger sizes, better surface quality, and improved beam quality. Due to the off-axis performance limitations of aspheric lenses, these precision polished aspheric lenses are more suitable for applications with small fields of view, such as fiber optic light sources, including fiber coupling. To ensure optimal performance, when used for collimating a point source, the beam should be incident on the flatter surface of the lens; when used for focusing a collimated beam, the beam should be incident on the surface with greater curvature. Due to the influence of polishing marks, the beam may not achieve an ideal spot shape when used for collimation, but it can reach the diffraction limit when used for focusing.

Precision Polished Aspheric Lens, N-BK7, Uncoated, Unmounted

Material: N-BK7 or equivalent materials
Operating Wavelength: 350 nm-2000 nm
Diameter: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm

LBTEK uninstalled precision polished aspheric lenses, made of N-BK7 or equivalent materials, uncoated, currently available in three sizes: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm. The spherical refraction of ordinary lenses cannot converge parallel light to a single point, resulting in spherical aberration. In contrast, the curvature of an aspheric lens changes continuously from the center to the edge. By adjusting the conic constant and aspheric coefficients, spherical aberration can be minimized, allowing light rays to converge to a single point, thereby improving optical performance.

LBTEK uninstalled precision polished aspheric lenses can be installed on fixed lens mounts.

Product Model	Diameter	Focal length	Numerical Aperture	Unit Price	Lead Time
AC1909 New	12.7 mm	25.0 mm	0.22	$201.34	today
AC1610 New	25.4 mm	50.0 mm	0.22	$247.75	today
AC1811 New	50.8 mm	100.0 mm	0.22	$499.43	today

Precision Polished Aspheric Lens, N-BK7, Uncoated, with Mount

Material: N-BK7 or equivalent materials
Operating Wavelength: 350 nm-2000 nm
Diameter: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm
Mounted in standard lens tubes

LBTEK Precision Polished Aspheric Lenses with Mount, N-BK7 or equivalent materials, uncoated, currently available in three sizes: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm. The spherical refraction of ordinary lenses cannot converge parallel light to a single point, resulting in spherical aberration. In contrast, the curvature of an aspheric lens changes continuously from the center to the edge. By adjusting the conic constant and aspheric coefficients, spherical aberration can be minimized, allowing light rays to converge to a single point, thereby improving optical performance. LBTEK precision polished aspheric lenses are pre-installed in standard lens sleeves. The sleeve surface is engraved with the product model, type, diameter, focal length, and numerical aperture, facilitating quick identification of lens parameters by users.

LBTEK Precision Polished Aspheric Lens Housing with Installation, Surface Engraved with Product Model and Other Information

Product Model	Diameter	Focal length	Numerical Aperture	Unit Price	Lead Time
MAC1909 New	12.7 mm	25.0 mm	0.22	$209.19	today
MAC1610 New	25.4 mm	50.0 mm	0.22	$255.6	today
MAC1811 New	50.8 mm	100.0 mm	0.22	$515.12	today

Precision Polished Aspheric Lens, S-LAH64, Uncoated, Unmounted

Material: S-LAH64 or equivalent materials
Operating Wavelength: S-LAH64: 375 nm-2100 nm
Diameter: Ø10.0 mm, Ø12.7 mm, Ø18.0 mm, Ø20.0 mm, Ø25.4 mm, Ø50.8 mm

LBTEK uninstalled precision polished aspheric lenses, made of S-LAH64 or equivalent materials, uncoated, currently available in six sizes: Diameter: Ø10.0 mm, Ø12.7 mm, Ø18.0 mm, Ø20.0 mm, Ø25.4 mm, Ø50.8 mm. The spherical refraction of ordinary lenses cannot converge parallel light to a single point, resulting in spherical aberration. In contrast, the curvature of an aspheric lens changes continuously from the center to the edge. By adjusting the conic constant and aspheric coefficients, spherical aberration can be minimized, allowing light to converge to a single point, thereby improving optical performance.

LBTEK uninstalled precision polished aspheric lenses can be installed on fixed lens mounts.

Product Model	Diameter	Focal length	Numerical Aperture	Unit Price	Lead Time
AC7908 New	12.7 mm	10.0 mm	0.5	$198.73	today
AC7101 New	10.0 mm	8.0 mm	0.49	$177.81	today
AC7304 New	18.0 mm	15.0 mm	0.48	$220.95	today
AC7405 New	20.0 mm	18.0 mm	0.45	$236.64	today
AC7606 New	25.4 mm	20.0 mm	0.5	$247.75	today
AC7807 New	50.8 mm	40.0 mm	0.5	$488.97	today

Precision Polished Aspheric Lens, S-LAH64, Uncoated, with Mount

Material: S-LAH64 or equivalent materials
Operating Wavelength: 375 nm-2100 nm
Diameter: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm
Mounted in standard lens cell

LBTEK Precision Polished Aspheric Lenses with Mount, made of S-LAH64 or equivalent materials, uncoated, currently available in three sizes: Diameter: Ø12.7 mm, Ø25.4 mm, Ø50.8 mm. The spherical refraction of ordinary lenses cannot converge parallel light to a single point, resulting in spherical aberration. In contrast, the curvature of an aspheric lens changes continuously from the center to the edge. By adjusting the conic constant and aspheric coefficients, spherical aberration can be minimized, allowing light rays to converge to a single point, thereby improving optical performance. LBTEK Precision Polished Aspheric Lenses are pre-installed in standard lens sleeves. The sleeve surface is engraved with the product model, type, diameter, focal length, and numerical aperture, facilitating quick identification of lens parameters by users.

LBTEK Precision Polished Aspheric Lens Housing with Installation, Surface Engraved with Product Model and Other Information

Product Model	Diameter	Focal length	Numerical Aperture	Unit Price	Lead Time
MAC7908 New	12.7 mm	10.0 mm	0.5	$206.57	today
MAC7606 New	25.4 mm	20.0 mm	0.5	$255.6	today
MAC7807 New	50.8 mm	40.0 mm	0.5	$504.66	today

Precision polished aspheric lens, N-BK7/S-LAH64, uncoated