Precision Molded Aspheric Lenses

Product number: SW11898

Manufacturer: GH Optics

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Product information "Precision Molded Aspheric Lenses"

Focal Length 0.8-22 mm; Numerical Aperture 0.13-0.68; Design Wavelength 405-1550 nm; Outer Lens Diameter 2.400-11.000 mm; Working Distance 0.20-20.41 mm

GH Optics’ series of molded lenses are precision molded glass aspheric lenses for applications in the visible and near-infrared (NIR) wavebands, such as small beam collimation, focusing, and fiber coupling.

Spherical lenses are relatively easy to manufacture but have disadvantages such as spherical aberrations in many optical applications. Aspheric lenses have clear advantages here – they avoid spherical aberrations due to their principle and can therefore reduce the complexity of both the design process and the resulting optical system. However, the cost and effort involved in the traditional production of aspheric lenses, e.g. using diamond turning, has often prevented the use of this type of lens in cost-sensitive applications.

GH Optics manufactures aspheric lenses by molding glass preforms in molds of high precision. The result is affordable aspheric lenses with high, reproducible quality. In addition to a wide range of standard types (see below), GH Optics also manufactures custom aspheric lenses. So if you don’t see the aspheric lens you need in our catalog, we can have it custom built for you. Our optical experts help you defining the best solution and GH Optics’ engineering team can manufacture at off-the-shelf lens prices that you won’t find elsewhere.

Four types of glass are available for our series of molded aspheric lenses, all RoHS compliant:

Lens Series	Glass Type	Refractive Index (n_d)	Abbe Number (ν_d)	CTE	dn/dT	RoHS Compliance
LD	D-ZK3	1.586	60.71	7.6×10^-6/°C	3.2×10^-6/°C	yes
LE	D-ZLaF52La	1.806	40.79	6.9×10^-6/°C	6.5×10^-6/°C	yes
LF	L-LAL12	1.674	55.00	6.9×10^-6/°C	6.5×10^-6/°C	yes
LG	D-LaK6	1.690	52.65	6.9×10^-6/°C	6.5×10^-6/°C	yes

Our series of molded aspheric lenses can be coated with a range of visible and NIR coatings, including four standard AR coatings (VA, VB, VC, VQ) featuring average reflectance values of ≤0.6%, ≤0.5%, or even ≤0.25%, for wavelength ranges of 380 nm to 700 nm, 600 nm to 1100 nm, 1050 nm to 1650 nm, or 1300 nm to 1700 nm respectively. Other customized coatings are available on request.

Lens Code	Effective Focal Length (EFL)	Working Distance (WD)	Numerical Aperture (NA)	Clear Aperture (CA)	Outer Diameter (OD)	Design Wavelength (DW)
LE0850	0.80 mm	0.40 mm	0.47	0.71 mm	3.000 mm	940 nm
LD1560	1.50 mm	0.80 mm	0.58	1.60 mm	2.400 mm	780 nm
LE1840	1.80 mm	1.10 mm	0.37	1.35 mm	3.000 mm	1550 nm
LG2560	2.50 mm	1.62 mm	0.60	3.04 mm	4.000 mm	488 nm
LF2570	2.50 mm	1.55 mm	0.66	3.30 mm	4.000 mm	405 nm
LE2850	2.80 mm	2.70/7.10 mm	0.52/0.26	4.12/3.76 mm	4.700 mm	980 nm
LE2860	2.80 mm	1.50 mm	0.64	3.60 mm	4.000 mm	830 nm
LE2861	2.80 mm	2.16 mm	0.55	3.60 mm	4.500 mm	830 nm
LD3170	3.10 mm	1.80 mm	0.68	5.00 mm	6.325 mm	830 nm
LD4060	4.00 mm	2.68 mm	0.64	5.10 mm	6.325 mm	685 nm
LG4060	4.00 mm	2.40 mm	0.60	4.80 mm	6.325 mm	408 nm
LD4530	4.50 mm	3.50 mm	0.30	2.70 mm	3.000 mm	635 nm
LD4540	4.50 mm	2.20 mm	0.40	3.70 mm	4.700 mm	980 nm
LE4560	4.50 mm	3.10 mm	0.55	5.07 mm	6.325 mm	780 nm
LD4650	4.60 mm	2.70 mm	0.54	4.80 mm	6.000 mm	655 nm
LD5020	5.00 mm	4.37 mm	0.15	1.60 mm	2.000 mm	1550 nm
LD5320	5.30 mm	4.19 mm	0.24	2.50 mm	3.000 mm	975 nm
LD5560	5.50 mm	3.70 mm	0.58	6.00 mm	7.200 mm	635 nm
LD6020	6.00 mm	4.90 mm	0.21	2.50 mm	3.000 mm	1550 nm
LD6230	6.20 mm	4.10 mm	0.30	3.70 mm	4.700 mm	635 nm
LE6240	6.20 mm	3.50 mm	0.40	5.00 mm	7.200 mm	780 nm
LE6740	6.70 mm	4.90 mm	0.44	5.75 mm	6.650 mm	515 nm
LE7530	7.50 mm	5.80 mm	0.30	4.54 mm	6.510 mm	780 nm
LD8050	8.00 mm	5.90 mm	0.50	8.00 mm	9.936 mm	780 nm
LD9630	9.60 mm	8.10 mm	0.27	5.20 mm	6.325 mm	635 nm
LD9930	9.90 mm	8.40 mm	0.27	5.20 mm	6.335 mm	650 nm
LDA050	10.00 mm	7.80 mm	0.51	10.00 mm	11.000 mm	635 nm
LDA130	11.00 mm	7.90 mm	0.25	5.50 mm	7.200 mm	635 nm
LDA320	13.00 mm	11.60 mm	0.20	5.20 mm	6.325 mm	633 nm
LDA520	15.30 mm	14.00 mm	0.16	5.00 mm	6.500 mm	785 nm
LDA820	18.40 mm	17.10 mm	0.15	5.50 mm	6.500 mm	785 nm
LDB210	22.00 mm	20.41 mm	0.13	5.50 mm	6.325 mm	670 nm

Key Features:

Diffraction Limited
Precision Molding
Different Glass Types Available
Effective Focal Length: 0.8 mm to 22 mm
Numerical Aperture: 0.13 to 0.68
Design Wavelength: 405 nm to 1550 nm
Outer Lens Diameter: 2.400 mm to 11.000 mm
Working Distance: 0.20 mm to 20.41 mm

Applications: Laser; Telecom; Medical; Imaging; And Many More

Manufacturer "GH Optics"

Founded by a team of optical experts with more than ten years of experience in the optical industry, GH Optics focuses on the design, development and series production of precision optics. Among the core competences of the manufacturer are the processing of optical glass preforms (VIS and IR) including polishing, grinding and CNC machining, as well as precision molding of aspheric lenses. Using advanced technologies, GH Optics can coat components with a wide portfolio of materials for wavelengths ranging from 350 nm to 14 µm. The supplier also offers optical assembly, ranging from mounted lenses and thermal imaging assemblies to modules and complex optical systems. A full set of qualification and test capabilities guarantees high and consistent product quality of the products. All products supplied by GH Optics are RoHS compliant. GH Optics’ standard catalog products range from precision molded aspheric lenses for the visible (VIS) and infrared (IR) range, mounted aspheric lenses and fiber collimators to thermal imaging lens assemblies and freeform optics. Beyond its catalogue products, GH Optics specifies, develops and manufactures customized optical solutions according to the customer’s specifications and requirements.

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