Products Home / Optical Elements / Optical Lenses / Aspheric Lenses: Molded & Precision Polished / Molded Aspheric Lenses / Aspheric Lens PairsAspheric Lens Pairs
- Near Aberration-Free One-to-One Imaging
- Direct Laser Diode to Fiber Coupling
- 600 - 1050 nm or 1050 - 1700 nm AR Coating
C220MP-C
Matched Aspheric Pair, 0.25 NA, AR Coated: 1050 - 1700 nmC230260P-C
Aspheric Pair, 0.55 / 0.16 NA, AR Coated: 1050 - 1700 nmC230220P-B
Aspheric Pair, 0.55 / 0.25 NA, AR Coated: 600 - 1050 nm
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Features
- Molded Glass Aspheric Lenses for Diffraction-Limited Performance
- Focus or Collimate Light Without Introducing Spherical Aberration
- Pre-Aligned and Mounted in an Engraved Metal Housing
- Anti-Reflective (AR) Coating for 600 - 1050 nm or 1050 - 1700 nm
Aspheric lenses are designed to focus or collimate light without introducing spherical aberration into the transmitted wavefront. For monochromatic sources, spherical aberration is often what prevents a spherical lens from achieving diffraction-limited performance when focusing or collimating light.
Our Aspheric Lens Pairs consist of two pre-aligned aspheric lenses mounted in a metal housing. We offer matched aspheric lens pairs which feature two identical aspheric lenses and are ideal for one-to-one imaging with near-diffraction-limited performance. We also offer fiber coupling aspheric lens pairs which feature two lenses with differing numerical apertures that are ideal for direct coupling of a laser diode into a multimode fiber. Options are available with AR coatings for 600 – 1050 nm or 1050 – 1700 nm.
Each aspheric lens pair comes pre-mounted in a metal housing engraved with the Item # for easy identification. For ease of mounting, the housings feature either external M11 x 0.5 threads or M9 x 0.5 threads. Please see below for more information on how to integrate the aspheric lens pairs into optomechanical assemblies using Thorlabs' components.
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The blue shaded region indicates the specified 600 - 1050 nm wavelength range for optimum performance.
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Click Here for Raw Data
The blue shaded region indicates the specified 1050 - 1700 nm wavelength range for optimum performance.
| Posted Comments: | |
randy.sabatini
(posted 2018-08-15 19:05:39.613) Are there any hopes of getting an aspheric lens pair with A AR coating (i.e. visible antireflection)? YLohia
(posted 2018-08-16 08:35:39.0) Yes, it is possible for us to offer these with the A coating by requesting a custom quote from techsupport@thorlabs.com. I will reach out to you directly with more information. liz74
(posted 2018-08-10 18:12:59.227) Hello, I would like to use this "Laser to High NA Fiber Coupling Pair" to couple 720nm and 1310nm lasers from diode facet into fibre, SM fibre would be the best. But when I check the C230220P-B product information, it says the design wavelength is 780nm. What dose the design wavelength mean, could I use this product to couple 720nm or 700nm laser from diode into a fibre. Looking forward to your reply. YLohia
(posted 2018-09-17 09:47:43.0) Hello, thank you for contacting Thorlabs. The design wavelength of 780nm means that at 780nm you would get the optimum performance from the lens. Since the lens is made from a single material, the design is optimized for a specific wavelength. The performance at any other wavelength will be different from what is called out as the performance at the design wavelength. For fiber coupling applications, the lenses offer good performance well beyond their specific design wavelength. The lenses are coated to minimize the back reflections in the coating range specified. For specific performance it is always best to use the Zemax data to model in the specific application.
That being said, this lens is specified for use in the 650 - 1050nm wavelength range, which is fine for 720nm but less than ideal for 1310nm. The primary issue here would be loss due to the AR coating, which does not cover 1310nm. There will also be a noticeable focal length shift so the spot sizes of the two wavelengths will not be equal. For such applications, we typically recommend using mirrors due to their broadband operating range. simon.poland
(posted 2018-05-01 15:58:33.947) Can you provide matched aspheric pairs with the A-coating (400-700nm)? nbayconich
(posted 2018-05-01 02:51:20.0) Thank you for your feedback. Yes we can provide a -A coated version of the C110MP lens pairs. I will contact you directly with more information about our custom capabilities. lea.caddick
(posted 2016-02-15 05:38:58.43) C230220P-C
Hello. Could you please confirm RoHS compliance for this item with hopefully a C of C?
Thank you.
Lea. besembeson
(posted 2016-03-03 12:21:42.0) Response from Bweh at Thorlabs USA: Yes it is. The document can be found here: http://www.thorlabs.com/RoHS_cert.cfm?rohs=A%20(compliant%202011/65/EU)&pn=C230220P-C avle
(posted 2013-05-14 03:28:56.587) can you make a custom matched pair using two 2330-C lenses? please quote tcohen
(posted 2013-05-15 12:50:00.0) Response from Tim at Thorlabs: Thank you for your inquiry. I will contact you directly to discuss your requirements. |
Zoom| Item # | C110MP-B | C220MP-B | C220MP-C |
|---|---|---|---|
| Numerical Aperture | 0.40 | 0.25 | |
| AR Coating | 600 - 1050 nm | 1050 - 1700 nm | |
| Distance to Focal Point from Housing Front |
1.800 mm | 6.096 mm | |
| Housing Thread | External M11 x 0.5 | ||
| Reference Drawing |
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- Drop-In Solution for Near Aberration-Free 1:1 Imaging
- Numerical Aperture (NA) of 0.40 or 0.25
- AR Coated for 600 - 1050 nm or 1050 - 1700 nm
Thorlabs’ Matched Aspheric Pairs provide near aberration-free one-to-one imaging. Each pair consists of two identical aspheric lenses, pre-aligned and mounted in a metal housing with M11 x 0.5 external threads. Our matched pairs are available with numerical apertures of 0.40 or 0.25 and with an AR coating for 600 - 1050 nm or 1050 - 1700 nm.
To mount the matched aspheric pairs, an RMS11P adapter can be used to adapt the external M11 x 0.5 threads to standard RMS threading. The RMS-threaded assembly can then be mounted directly to our HCS031 Flexure Stage Mount or our KM100R Kinematic Mount. Alternatively, the RMS-threaded assembly can be mounted to any of our SM1-threaded (1.035"-40) Lens Tubes using an additional SM1A3 adapter.
Zoom| Item # | C230220P-B | C230220P-C | C230260P-B | C230260P-C | |
|---|---|---|---|---|---|
| Numerical Aperture | Laser Side | 0.55 | |||
| Fiber Side | 0.25 | 0.16 | |||
| AR Coating | 600 - 1050 nm | 1050 - 1700 nm | 600 - 1050 nm | 1050 - 1700 nm | |
| Distance to Focal Point from Housing Front |
Laser Side | 2.900 mm | |||
| Fiber Side | 5.766 mm | 10.510 mm | |||
| Housing Thread | External M9 x 0.5 | ||||
| Reference Drawing |
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 |
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- Enables Direct Laser Diode-to-Fiber Coupling
- Fiber Numerical Aperture of 0.25 or 0.16
- AR Coated for 600 - 1050 nm or 1050 - 1700 nm
Thorlabs’ Fiber Coupling Lens Pairs provide an easy and effective solution for coupling a laser diode to an optical fiber. Each pair consists of two pre-aligned aspheric lenses. The first lens, on the laser side, has a numerical aperture of 0.55 and is used to gather the divergent output of the laser diode. The second lens, on the fiber side, is available with a numerical aperture of either 0.25 or 0.16 and is suitable for launching the light into a multimode or single mode fiber, respectively. The combination of a high NA, short focal length lens with a lower NA, longer focal length lens reduces the NA of the emitter by the ratio of the focal lengths. The size of the emitter is simultaneously magnified by the inverse of this same ratio. The lens pairs are available with an AR coating for 600 - 1050 nm or 1050 - 1700 nm.
The lens pairs are mounted in a metal housing with an external M9 x 0.5 thread on the side designed to face the laser diode. For ease of mounting, Thorlabs designed the S1TM09 adapter to adapt the external M9 x 0.5 threading to SM1 threading, allowing for integration into SM1-threaded (1.035"-40) lens tubes. Alternatively, the M09 x 0.5 external threads can instead be adapted to standard RMS threading using our RMS09 adapter, allowing the aspheric lens pairs to be integrated into other optomechanical assemblies. For example, the RMS-threaded assembly can be mounted in our HCS013 Flexure Stage Mount, or our KM100R Kinematic Mount.
Aspheric Lens Pairs