High-Magnification Zoom Lens Systems for Machine Vision

Zoom Lenses Supporting Magnifications from 0.07 to 28
Compatible with Thorlabs’ sCMOS, CMOS, and CCD Cameras
External C-Mount Threads or F-Mount Bayonet Mount

MVL12X3Z

12X Zoom Lens

MVL133A

1.33X Extension Tube

MVL6X15L

1.5X Lens Attachment

Application Idea

6.5X Zoom Lens with 1.33X Extension Tube
and 1.5X Lens Attachment, Mounted on our
1501M-USB Scientific CCD Camera

Please Wait

Overview
Specs
6.5X System
12X System
Field of View
Example Images
Feedback

Click to Enlarge
Our Zoom Lens System Features (from Left to Right) One Magnifying Lens Attachment (Optional), Zoom Lens, Extension Tube, C-Mount Adapter, and 2/3" Sensor Format Camera

Features

Modular Zoom Lens System for Machine Vision and Other Imaging Applications
6.5X System Provides Magnifications from 0.09 to 18.0 (Core Lens has a 6.5X Magnification Adjustment Range)
12X System Provides Magnifications from 0.07 to 28.0 (Core Lens has a 12X Magnification Adjustment Range)
Working Distances from 36 - 356 mm
Designed for our C-Mount 2/3" Sensor Format Cameras
Compatible with SM1-Threaded Components Through the Use of SM1A9 or SM1A10 C-Mount to SM1 Adapters
0.15 - 91 mm Field of View (See the Field of View Tab for Details)

Thorlabs' Zoom Lenses are ideal for high-magnification machine vision and imaging applications, providing an optimal balance between optical performance and a large zoom range. These zoom lenses must be used with an extension tube (sold below), and can optionally be used with the appropriate 6.5X or 12X system magnifying lens attachment (also sold below).

Our modular system consists of a 0.7 - 4.5X zoom lens (6.5X zoom range) or 0.58 - 7X zoom lens (12X zoom range), along with 0.50X, 0.67X, 1X, 1.33X, and 2X extension tubes and optional 0.25X, 0.5X, 0.75X, 1.5X, and 2.0X magnifying lens adapters. Together, these components allow our 6.5X systems to provide a net magnification of 0.09 - 18 with a 6.5X magnification adjustment range, and they allow our 12X systems to provide a net magnification of 0.07 - 28 with a 12X magnification adjustment range. The magnification adjuster (zoom) is a recessed rotating collar on the barrel of the lens, which allows the magnification to be adjusted even when the lens is mounted in a V-clamp. Please note that only one magnifying lens attachment may be used at a time.

Magnification Calculation
The net magnification, M, of the system (M = image size / object size) is equal to the magnification of the magnifying lens attachment, multiplied by the magnification of the zoom lens (at its current setting), multiplied by the magnification of the extension tube. For example, the 12X zoom lens can be set to a magnification between 0.58X and 7X (corresponding to a 12X zoom range). If it is used at its maximum magnification setting of 7X, along with a 2X lens attachment and a 2x extension tube, the maximum system magnification of 2 x 7 x 2 = 28 is realized. See the Specs tab for the maximum and minimum magnifications of each lens combination.

The MVLCMC C-mount adapter is available for attaching these lenses to cameras that use a standard C-mount. The MVL20FA 2X extension tube with an F-Mount bayonet mount is also available. Please note that the zoom lenses must be used with an extension tube (or the image will not be able to be focused), while the magnifying lens adapters are optional. Additionally, when used with our SM1A9 or SM1A10 adapters, the zoom lenses sold on this page can be integrated with Thorlabs' SM1-threaded optomechanics.

Thorlabs also offers Standard C-Mount Machine Vision Lenses.

Lens Attachment	Zoom Lens	Extension Tube	Working Distance	System Magnification		Objective NA		Resolving Limit^a		Pixel Size^b (µm)		Depth of Field
Lens Attachment	Zoom Lens	Extension Tube	Working Distance	Low^c	High^c	Low	High	Low	High	Low	High	Low	High
6.5X Zoom Lens
MVL6X025L (0.25X)	MVL6X3Z^d or MVL6X12Z (6.5X)	MVL05A (0.5X)	356 mm	0.09	0.56	0.006	0.018	55.56 µm	18.52 µm	2.50	5.19	13.89 mm	1.54 mm
		MVL067A (0.67X)		0.12	0.75					3.33	6.95
		MVL10A (1.00X)		0.18	1.13					5.00	10.46
		MVL133A (1.33X)		0.23	1.51					6.65	13.91
		MVL20A or MVL20FA (2X)		0.35	2.25					9.72	20.84
MVL6X05L (0.50X)		MVL05A (0.5X)	175 mm	0.18	1.13	0.011	0.035	30.30 µm	9.52 µm	2.73	5.38	4.13 mm	0.41 mm
		MVL067A (0.67X)		0.23	1.50					3.48	7.14
		MVL10A (1.00X)		0.35	2.25					5.30	10.71
		MVL133A (1.33X)		0.47	3.03					7.05	14.24
		MVL20A or MVL20FA (2X)		0.70	4.50					10.61	21.42
MVL6X075L (0.75X)		MVL05A (0.5X)	113 mm	0.26	1.69	0.017	0.053	19.60 µm	6.28 µm	2.55	5.32	1.73 mm	0.18 mm
		MVL067A (0.67X)		0.35	2.25					3.43	7.08
		MVL10A (1.00X)		0.53	3.38					5.20	10.63
		MVL133A (1.33X)		0.70	4.54					6.92	14.13
		MVL20A or MVL20FA (2X)		1.05	6.75					10.30	21.23
None		MVL05A (0.5X)	92 mm	0.35	2.25	0.023	0.071	14.50 µm	4.70 µm	2.54	5.28	0.95 mm	0.1 mm
		MVL067A (0.67X)		0.47	3.00					3.41	7.04
		MVL10A (1.00X)		0.70	4.50					5.08	10.55
		MVL133A (1.33X)		0.93	6.05					6.76	14.03
		MVL20A or MVL20FA (2X)		1.40	9.00					10.15	21.11
MVL6X15L (1.5X)		MVL05A (0.5X)	51 mm	0.53	3.38	0.034	0.106	9.80 µm	3.14 µm	2.60	5.32	0.43 mm	0.04 mm
		MVL067A (0.67X)		0.70	4.50					3.43	7.09
		MVL10A (1.00X)		1.05	6.75					5.15	10.63
		MVL133A (1.33X)		1.40	9.08					6.85	14.14
		MVL20A or MVL20FA (2X)		2.10	13.50					10.29	21.26
MVL6X20L (2.0X)		MVL05A (0.5X)	36 mm	0.70	4.50	0.046	0.142	7.24 µm	2.34 µm	2.54	5.29	0.24 mm	0.02 mm
		MVL067A (0.67X)		0.94	6.00					3.41	7.05
		MVL10A (1.00X)		1.40	9.00					5.08	10.58
		MVL133A (1.33X)		1.86	12.10					6.76	14.07
		MVL20A or MVL20FA (2X)		2.80	18.00					10.15	21.15
Lens Attachment	Zoom Lens	Extension Tube	Working Distance	System Magnification		Objective NA		Resolving Limit^a		Matching Pixel Size^b (µm)		Depth of Field
Lens Attachment	Zoom Lens	Extension Tube	Working Distance	Low^c	High^c	Low	High	Low	High	Low	High	Low	High
12X Zoom Lens
MVL12X025L (0.25X)	MVL12X3Z^e or MVL12X12Z (12X)	MVL05A (0.5X)	341 mm	0.07	0.87	0.005	0.025	66.66 µm	13.34 µm	2.33	5.80	20.00 mm	0.80 mm
		MVL067A (0.67X)		0.10	1.17					3.33	7.80
		MVL10A (1.00X)		0.15	1.75					5.00	11.67
		MVL133A (1.33X)		0.19	2.33					6.33	15.54
		MVL20A or MVL20FA (2X)		0.29	3.50					9.67	23.34
MVL12X05L (0.50X)		MVL05A (0.5X)	165 mm	0.14	1.75	0.009	0.051	37.04 µm	6.66 µm	2.59	5.82	6.17 mm	0.19 mm
		MVL067A (0.67X)		0.19	2.35					3.60	7.68
		MVL10A (1.00X)		0.29	3.50					5.38	11.45
		MVL133A (1.33X)		0.39	4.66					7.22	15.51
		MVL20A or MVL20FA (2X)		0.58	7.00					10.74	22.89
MVL12X075L (0.75X)		MVL05A (0.5X)	108 mm	0.22	2.62	0.014	0.076	23.80 µm	4.44 µm	2.61	5.81	2.55 mm	0.09 mm
		MVL067A (0.67X)		0.29	3.52					3.45	7.73
		MVL10A (1.00X)		0.44	5.25					5.24	11.52
		MVL133A (1.33X)		0.58	6.98					6.90	15.49
		MVL20A or MVL20FA (2X)		0.87	10.50					10.35	23.05
None		MVL05A (0.5X)	86 mm	0.29	3.49	0.019	0.101	18.52 µm	3.34 µm	2.68	5.82	1.39 mm	0.05 mm
		MVL067A (0.67X)		0.39	4.69					3.42	7.74
		MVL10A (1.00X)		0.58	7.00					5.09	11.55
		MVL133A (1.33X)		0.77	9.31					7.13	15.54
		MVL20A or MVL20FA (2X)		1.16	14.00					10.17	23.10
MVL12X15L (1.5X)		MVL05A (0.5X)	50 mm	0.43	5.23	0.028	0.151	12.34 µm	2.24 µm	2.65	5.85	0.64 mm	0.02 mm
		MVL067A (0.67X)		0.58	7.04					3.45	7.78
		MVL10A (1.00X)		0.87	10.50					5.18	11.60
		MVL133A (1.33X)		1.16	14.00					7.15	15.68
		MVL20A or MVL20FA (2X)		1.74	21.00					10.74	23.34
MVL12X20L (2.0X)		MVL05A (0.5X)	37 mm	0.58	6.98	0.038	0.202	9.00 µm	1.66 µm	2.61	5.79	0.35 mm	0.01 mm
		MVL067A (0.67X)		0.78	9.38					3.42	7.79
		MVL10A (1.00X)		1.16	14.00					5.09	11.62
		MVL133A (1.33X)		1.54	18.60					6.93	15.43
		MVL20A or MVL20FA (2X)		2.32	28.00					10.17	23.24

Minimum resolvable feature size is half of the threshold line pair limit [Minimum Feature Size = 1/(3 x NA) µm]
Matching pixel size is that which will permit the minimum feature size to overlap two pixels. [Pixel Size = 1/2(Feature Size x System Magnification)]. If the matching pixel size is greater than the camera pixel size, the system is "lens limited". If the matching pixel size is less than the camera pixel size, the system is "camera limited".
Refers to the zoom setting of the lens.
The MVL6X3Z Zoom Lens with Coaxial Illumination port is fully compatible with the MVL6X15L 1.5X and MV6X20L 2X Magnifying Lens Attachments. While the MVL6X3Z can be used with the MVL6X025L 0.25X, MVL6X05L 0.5X, and MVL6X075L 0.75X Magnifying Lens attachements, there will be some vignetting.
The MVL12X3Z Zoom Lens with Coaxial Illumination port is fully compatible with the MVL12X15L 1.5X and MV12X20L 2X Magnifying Lens Attachments. While the MVL12X3Z can be used with the MVL12X025L 0.25X, MVL12X05L 0.5X, and MVL12X075L 0.75X Magnifying Lens attachements, there will be some vignetting.

6.5X System Diagram

*The MVL6X3Z Zoom Lens with Coaxial Illumination port is fully compatible with the MVL6X15L 1.5X and MV6X20L 2X Magnifying Lens Attachments. While the MVL6X3Z can be used with the MVL6X025L 0.25X, MVL6X05L 0.5X, and MVL6X075L 0.75X Magnifying Lens attachements, there will be some vignetting.

12X System Diagram

*The MV12X3Z Zoom Lens with Coaxial Illumination port is fully compatible with the MVL12X15L 1.5X and MV12X20L 2X Magnifying Lens Attachments. While the MVL12X3Z can be used with the MVL12X025L 0.25X, MVL12X05L 0.5X, and MVL12X075L 0.75X Magnifying Lens attachements, there will be some vignetting.

Lens Attachment	Zoom Lens	WD	Camera Format	Field of View (mm)^a
				0.5X Extension Tube MVL05A		0.67X Extension Tube MVL067A		1X Extension Tube MVL10A		1.33X Extension Tube MVL133A		2X Extension Tube MVL20(F)A
				Low^b	High^b	Low	High	Low	High	Low	High	Low	High
6.5X Zoom Lens
MVL6X025L (0.25X)	MVL6X3Z or MVL6X12Z (6.5X)	356 mm	1/4"	45.70	7.12	34.03	5.33	22.85	3.56	17.18	2.68	11.42	1.78
			1/3"	68.64	10.64	51.12	8.04	34.52	5.32	25.80	4.0	17.16	2.66
			1/2"	91.36	14.16	68.06	10.66	45.68	7.08	34.34	5.32	22.84	3.54
			2/3"	91.40	19.52	93.62	14.66	62.84	9.76	47.25	7.34	31.42	4.88
MVL6X05L (0.50X)		175 mm	1/4"	22.85	3.56	17.02	2.66	11.42	1.78	8.59	1.34	5.71	0.89
			1/3"	34.32	5.32	25.56	4.0	17.16	2.67	12.90	2.01	8.58	1.33
			1/2"	45.68	7.08	34.03	5.33	22.85	3.56	17.18	2.68	11.42	1.77
			2/3"	45.70	9.76	46.81	7.33	31.43	4.89	23.63	3.68	15.71	2.44
MVL6X075L (0.75X)		113 mm	1/4"	15.22	2.38	11.34	1.78	7.61	1.19	5.72	0.89	3.81	0.59
			1/3"	22.86	3.56	17.04	2.67	11.43	1.78	8.59	1.34	5.72	0.89
			1/2"	30.46	4.74	22.69	3.56	15.23	2.37	11.45	1.78	7.62	1.19
			2/3"	30.50	6.52	31.21	4.89	20.95	3.26	15.75	2.45	10.48	1.63
None		92 mm	1/4"	11.42	1.78	8.51	1.33	5.71	0.89	4.29	0.67	2.86	0.45
			1/3"	17.16	2.67	12.77	2.01	8.58	1.33	6.45	1.0	4.29	0.67
			1/2"	22.85	3.56	17.01	2.67	11.42	1.77	8.59	1.33	5.71	0.89
			2/3"	22.90	4.89	23.40	3.65	15.71	2.44	11.81	1.83	7.86	1.22
MVL6X15L (1.5X)		51 mm	1/4"	7.61	1.19	5.67	0.89	3.81	0.59	2.86	0.44	1.91	0.30
			1/3"	11.43	1.78	8.52	1.33	5.72	0.89	4.3	0.67	2.86	0.44
			1/2"	15.23	2.37	11.34	1.77	7.62	1.19	5.73	0.89	3.81	0.59
			2/3"	15.00	3.26	15.60	2.44	10.48	1.63	7.88	1.22	5.24	0.81
MVL6X20L (2.0X)		36 mm	1/4"	5.71	0.89	4.26	0.67	2.86	0.45	2.15	0.35	1.43	0.23
			1/3"	8.58	1.33	6.39	1.00	4.29	0.67	3.22	0.50	2.15	0.33
			1/2"	11.42	1.77	8.51	1.33	5.71	0.89	4.29	0.67	2.86	0.44
			2/3"	11.40	2.44	11.70	1.83	7.86	1.22	5.91	0.92	3.93	0.61
Lens Attachment	Zoom Lens	W.D.	Camera Format	Field of View (mm)^a
				0.5X Extension Tube MVL05A		0.67X Extension Tube MVL067A		1X Extension Tube MVL10A		1.33X Extension Tube MVL133A		2X Extension Tube MVL20(F)A
				Low^b	High^b	Low	High	Low	High	Low	High	Low	High
12X Zoom Lens
MVL12X025L (0.25X)	MVL12X3Z or MVL12X12Z (12X)	341 mm	1/4"	57.14	4.59	41.16	3.40	27.60	2.28	21.05	1.72	13.9	1.14
			1/3"	85.71	6.89	61.73	5.10	41.38	3.42	31.57	2.57	20.69	1.71
			1/2"	-	-	82.32	6.80	55.16	4.56	42.10	3.43	27.58	2.28
			2/3"	-	-	72.00^c	9.35	75.88	6.28	57.89	4.72	37.94	3.14
MVL12X05L (0.50X)		165 mm	1/4"	28.57	2.28	20.58	1.70	13.79	1.14	10.25	0.86	6.90	0.76
			1/3"	42.85	3.42	30.87	2.55	20.69	1.71	15.38	1.29	10.34	0.86
			1/2"	-	-	41.16	3.40	27.58	2.28	20.51	1.72	13.79	1.14
			2/3"	-	-	36.0^c	4.68	37.94	3.14	28.20	2.36	18.97	1.57
MVL12X075L (0.75X)		108 mm	1/4"	18.18	1.52	13.72	1.14	9.19	0.76	6.89	0.57	4.60	0.38
			1/3"	27.27	2.29	20.58	1.70	13.79	1.14	10.34	0.85	6.89	0.57
			1/2"	-	-	27.44	2.27	18.34	1.52	13.79	1.14	9.19	0.76
			2/3"	-	-	24.30^c	3.12	25.30	2.09	18.96	1.57	12.64	1.05
None		86 mm	1/4"	13.79	1.14	10.29	0.85	6.90	0.57	5.19	0.43	3.45	0.29
			1/3"	20.69	1.72	15.44	1.28	10.34	0.86	7.79	0.64	5.18	0.43
			1/2"	-	-	20.58	1.70	13.79	1.14	10.39	0.86	6.90	0.57
			2/3"	-	-	18.20^c	2.34	18.97	1.57	14.28	1.18	9.49	0.78
MVL12X15L (1.5X)		50 mm	1/4"	9.30	0.76	6.86	0.57	4.60	0.38	3.44	0.28	2.30	0.19
			1/3"	13.95	1.14	10.29	0.85	6.89	0.57	5.17	0.44	3.45	0.29
			1/2"	-	-	13.72	1.13	9.19	0.76	6.89	0.57	4.60	0.38
			2/3"	-	-	12.20^c	1.55	12.64	1.05	9.48	0.78	6.33	0.52
MVL12X20L (2.0X)		37 mm	1/4"	6.89	0.57	5.14	0.43	3.45	0.29	2.59	0.21	1.73	0.15
			1/3"	10.34	0.85	7.72	0.64	5.18	0.43	3.89	0.32	2.59	0.22
			1/2"	-	-	10.29	0.85	6.90	0.57	5.19	0.43	3.45	0.29
			2/3"	-	-	9.10^c	1.17	9.49	0.78	7.14	0.59	4.75	0.40

The above fields of view are measured diagonally across the sensor. (Horizontal = Diagonal x 0.8 and Vertical = Diagonal x 0.6).
Refers to the magnification setting of the zoom lens.
Vignetting occurs at zoom settings of less than 0.9X.

Example Images

All images shown were taken with a Thorlabs DCC1240C color CCD camera, MVL20A extension tube, MVL12X3Z zoom lens, and MVL12X20L magnifying lens attachment.

Click to Enlarge
Individual pixels on the LCD screen of a smartphone (213 µm x 170 µm field of view at 28X magnification, LCD Screen is 326 pixels per inch)

Click to Enlarge
Damaged end of a Ø50 µm core multimode fiber in a cermamic ferrule at 28X magnification (Oblique Illumination).

Click to Enlarge

Click to Enlarge

Far (left) and close-up (right) images of the CCD sensor and surrounding curcuit board of a Thorlabs DCC1224C camera.

2.56 mm x 2.05 mm Field of View (2.32X Magnification) with Coaxial Illumination

267 µm x 213 µm Field of View (~22X Magnification) with Coaxial Illumination

Posted Comments:

user (posted 2020-08-04 20:46:51.303)

How does the coaxial illuminator feeds into the optical path, a 50/50 beam splitter? I’m concerned about transmission losses from this combining element on the collected light from the object being imaged for an extremely low fluorescence application.

nbayconich (posted 2020-08-06 10:45:37.0)

Thank you for contacting Thorlabs. The MVL12X3Z uses a 50:50 beamsplitter for the coaxial illumination port. I will reach out to you directly to discuss the transmission properties through these zoom lenses.

Vijay Patel (posted 2020-07-11 01:58:17.227)

Hello sir I want to see 40 micron hole with the help of a camera and zoom lense assembly so plz suggest me assembly for this

YLohia (posted 2020-07-13 10:34:34.0)

Hello, thank you for contacting Thorlabs. We have been in direct communication with you regarding this.

user (posted 2020-05-04 11:05:53.957)

Hello,I have a similar question for a long distance inspection microscope to look inside a cryostat. I'm currently building a new setup for STM measurements at low temperature. I need some optics to place the tip of my STM on top of a 40um-wide membrane inside my cryostat, at a minimum working distance of 200mm. I know already that magnification and working distance are conflicting requirements, for this reason I don't ask for extreme resolution, but something that allows me to recognize the membrane and put the tip on top. I have already one of your CCD Camera ( HD, 1/3" format, 1280x1024, CS-Mount ) Could any of your products be good for this purpose? Thanks and best regards,

YLohia (posted 2020-05-06 11:37:28.0)

Hello again, any lens system for a specific set of requirements can be selected using the table given on the Specs tab on this page. This table gives a list of all possible combinations of our Machine Vision lenses/attachments and their respective magnifications and working distances. For your application, the only possible working distance for your requirement that we can offer to you is 341 mm using the MVL12X025L, MVL12X12Z, and MVL20FA. This will yield a maximum magnification of 3.50, which would make your 40 um object a 140 um image. This should likely offer sufficient resolution for camera's ~4 um pixel size.

user (posted 2020-04-23 11:10:37.36)

Hello, I would like to build a long working distance setup (WD ~200mm) and high magnification (>24x) in the visible range, to look inside a cryostat. Could you give me some hints? I'm really new in the field. Thanks in advance!

YLohia (posted 2020-04-29 11:33:47.0)

Hello, thank you for contacting Thorlabs. Unfortunately, we currently do not have a suitable solution for your application. The combination of lenses to produce your required >24X magnification are MVL12X20L, MVL12X12Z, MVL20A, but they will limit the working distance to 37 mm.

Mario Sanchez (posted 2020-04-17 08:43:14.207)

Hello, This is Mario, from ITAINNOVA (Zaragoza, Spain). I usually work with Digital Image Correlation and, currently, I have to perform some small scale measurements. I have a 5 mpx CCD camera and a set of lenses (8, 23 and 60 mm + adaptor tubes) But I think that this configuration isn't enough to perform small scale measurements due tue the high lens distortion. I am interested in the High-Magnification zoom lenses system for machine vision. Please, could you give me some information about that? advantages/disadvanteges with respect to long distance microscope, price, etc. Thank you in advance. Kind Regards, Mario

asundararaj (posted 2020-04-29 11:38:05.0)

Thank you for contacting Thorlabs. The choice of a zoom lens would depend on the Field Of View you require as well as the Camera. We recommend going through our selection table and make a selection based on your requirement - https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=6708&tabname=field%20of%20view. I have reached out to you directly to discuss options based on your specific parameters and requirements.

Gyeongtae Kim (posted 2020-04-02 05:38:27.277)

Hi, I have plan to build macroscope. A camera I will use is sCMOS (340M-usb). I'll use it to image mouse brain ( covering 3~10 mm diameter region of brain) and consider both fluorescence (GFP) and NIR (730nm for intrinsic imaging). Would you recommend suitable lens for the macroscope?

YLohia (posted 2020-04-03 11:53:20.0)

Hello, thank you for contacting Thorlabs. For your requirements of 1/3 camera format, 3-10 mm FOV, 200 um resolution, and working distance > 100 mm, we recommend the following components: MVL6X075L lens attachment, MVL6X12Z zoom lens, MVL067A extension tube. This will result in a working distance of 113 mm, FOV 17.04 mm (max) and 2.67 mm (min), and a resolving limit of 6.28 µm to 19.60 µm. More information on selecting components can be found by looking at the tables presented in the Specs tab and the Field of View tab.

Maurizio Ruggiero (posted 2019-10-18 05:18:23.647)

Hi, I need your advise. I am interested in acquisition of a fluorescence image. The sensible area is 1,5mm x 250um x120um, so to have a good image, I selected Quantalux or Kiralux camera, MVL6X3Z, MVL6X20L and MVL133A. With this configuration at the distance of 36mm I have good focus and close-up of the sensible area, is it correct?do I need anything else? thanks in advance.

YLohia (posted 2019-10-22 09:10:24.0)

Hello, thank you for contacting Thorlabs. Yes, this selection will work for your sample size and target resolution. I have reached out to you directly to discuss your application further.

user (posted 2019-08-28 10:30:05.433)

Hello, is it possible to have focus length more than 20 mm while with a zoom from ~1x to ~20x? What else do I need to add to this system below? Thanks! "6.5X Zoom Lens with 1.33X Extension Tube and 1.5X Lens Attachment, Mounted on our 1500M-CL Scientific CCD Camera"

YLohia (posted 2019-08-28 11:14:37.0)

Hello, thank you for contacting Thorlabs. When you say "focus length" are you referring to the working distance of the lens or the fine focus travel? The focal length for these lenses is not specified by the manufacturer, Navitar. All of the combinations of the lenses and attachments are given in the "Specs" tab. All working distances are > 20mm. If you require more than 20x of magnification, you will have to use the MVL12X12Z instead of the MVL6X12Z.

Jae-muk Lim (posted 2019-08-01 00:42:39.213)

To whom it may concern, Hello. I am jae-muk Lim, in Hanyang Univ. (South Korea) I'm making a finite system with MVL12X3Z . After several attempts, they were made using only the lenses inside the zoom lens and other objective lens. The bottom lens was removed, and I want to calculate the magnification theoretically and compare it to what is seen in the actual CCD. So I think the bottom lens will affect the magnification, and if I can see the specifications of the lens, I think I can calculate it in reverse.

YLohia (posted 2019-08-01 10:50:13.0)

Hello Jae-Muk, thank you for contacting Thorlabs. What specifications are you looking for? All information is listed in the "Specs" tab on this page.

Nitesh Gupta (posted 2019-06-13 06:17:37.86)

What is the working distance if we use MVL12X12Z(zoom lens) with a MVL20A(Extention tube) without using the magnifying lens attachment

YLohia (posted 2019-06-14 09:49:56.0)

Hello, working distances for all scenarios (including ones without lens attachments) are given in the "Specs" tab. For your particular application, the working distance will be 86 mm.

sorinnicolae.sauca (posted 2017-09-26 16:18:41.017)

Good day, I am Dr Sauca, from IFF Company. I need a high magnification system for 2-10 micron polymeric microcapsules. It would be useful the system DCC1240C color CCD camera, MVL20A extension tube, MVL12X12Z zoom lens, and MVL12X20L? What type of light do I need? Thank you, Sorin

tfrisch (posted 2017-10-20 10:23:04.0)

Hello, thank you for contacting Thorlabs. I will reach out to you directly about setting up a transillumination or dark-field illumination.

timothee.labouret (posted 2017-02-23 10:53:13.217)

Hi, I am very interested in a high magnification system (highest mag) listed here. I want to use it with a high-speed camera that I have from another supplier. I have technical questions regarding both compatibility and features of this kind of system. Please contact me on my email address. Thank you.

tfrisch (posted 2017-03-06 09:06:16.0)

Hello, thank you for contacting Thorlabs. I have asked our Technical Support Team to reach out to you about the compatibility and features of this magnification system.

sylvain.hermelin (posted 2016-12-02 10:27:10.077)

Dear Sir or Madam, We are interested in a MVL6X12Z + MVL20A or MVL20FA for imaging down to 380-350nm. Is it possible to have the transmission curve for this setup? Thanks, Regards

tfrisch (posted 2016-12-05 11:26:31.0)

Hello, thank you for contacting Thorlabs. While we don't have any formal data on the performance of these lenses in the UV, the transmission does drop off sharply in the UV. I would not recommend them for use in 350-380nm. I will reach out to you directly.

ilhan.kahraman (posted 2016-04-06 14:52:14.837)

Dear, I have the galilean telescope which magnificating 4,5 times, I want to the optical zoom system which object height keep at different object distance with same object height in image plane. My telescope, at 1 km distance 2m height objective's at the image plane height object appr. is 2mm and same object at 30 m distance at the image plane object height appr. is 40mm. I need optic zoom system which make image plane same object height(at 10mm). Could you support in this topic. How I can select the correct zoom system(my camera have 12mm width and 10mm height aperture) Best regards

besembeson (posted 2016-04-06 10:57:58.0)

Response from Bweh at Thorlabs USA: I will contact you directly to discuss this please.

dgutierrez (posted 2016-02-05 15:37:20.13)

Hello, My Name is Diego, working at Institute of Science Materials of Barcelona (ICMAB). I am very ineresting in taking an image of some structures(100-40 um). The distance between the structures and the lens-camera is arround 8cm. I think your CMOS camera, MVL12x3Z and OSL2 will be very good for me. However, I am not sure about the adapters. I think all the components that I need to work are: DCC1645C, MVLCMC, MVL12X3Z, SM1V05, OSL2, SM1LTRR, SM1A1, SM1T2. am I correct or I miss someting? Thanks

besembeson (posted 2016-02-10 10:24:31.0)

Response from Bweh at Thorlabs USA: Yes that is correct with additional components. You will need to add an extension tube, such as the MVL20A which will help in bringing the image to focus and an (optional) magnifying adapter such as the MVL12X20L. So a recommended arrangement will be the DCC1645C, MVLCMC, MVL20A, MVL12X3Z, MVL12X20L. For the light source through the coaxial illumination port, you will also need the OSL2, AD5LLG and LLG0538-6 or LLG0538-8. You may not need the SM1V05, SM1LTRR, SM1A1, SM1T1.

kimbym (posted 2014-03-19 03:34:35.797)

I'd like to observe the fluorescence of sample with tMVL6x12Z zoom lens mounted in a CCD camera. Is possible to connect the filter cube such as DFM/M to the zoom lens ? If possible, how can they connected ? or if not possible, I'd like ask how flurescence imagigng system is fabricated to observe the fluoscence image. Our FOV is around 10~20mm.

besembeson (posted 2014-03-27 01:12:05.0)

Response from Bweh E at Thorlabs: Yes you can connect this to the DFM/M. One way to do this, depending on which end you would prefer to use, will require the MVLCMC and SM1 adapter to C-mount adapter (SM1A12) or you will need an SM1A18 and a lens tube coupler such as SM1T2. You may consider having cage plates such as the CP02 and cage rods like the ER05 (four will be needed) to increase stability. I will send you drawing of the MVL6X12Z to understand why I suggested the SM1A18.

vincent.thominet (posted 2013-12-05 14:19:42.03)

In the Specs table, there is a x2 factor between the resolving limit values versus NA for the 6.5X Zoom Lens and for the 12X Zoom lens. Which one is correct? [Minimum Feature Size = 1/(3000 x NA)]for the 6.5X Zoom Lens and [Minimum Feature Size = 1/2 x 1/(3000 x NA)]for the 12X Zoom Lens Best regards Vincent

jlow (posted 2013-12-16 05:11:20.0)

Response from Jeremy at Thorlabs: Thank you for pointing this out. The formula, Minimum Feature Size = 1/(3000 x NA), is correct. We will correct the numbers for the 12X table on the website.

ulmanis (posted 2013-08-20 14:51:29.39)

Dear Sir/Madam, I am interested in the 12x high-magnification zoom lens system for an application in a laser absorption imaging setup. In this matter I would like to ask, if the optics used in these systems are anti-reflection coated and if you could send me a graph of the transmission versus the wavelength for the 12x system. Kind regards, Juris Ulmanis Quantum Dynamics of Atomic and Molecular Systems Physikalisches Insitut Universität Heidelberg Im Neuenheimer Feld 226 69120 Heidelberg Germany Tel: +49 6221-54 19480 http://www.physi.uni-heidelberg.de/Forschung/QD/

tcohen (posted 2013-08-22 15:00:00.0)

Response from Tim at Thorlabs to Juris: Thank you for contacting us. Yes, there is an AR coating and I have sent you a typical curve. The transmission peak is ~87% for 550nm.

6.5X Zoom Lenses (0.7 - 4.5X Magnification Range)

Zoom

6.5X Zoom Range (Core Lens Has a Magnification of 0.7 - 4.5X)
0.006 - 0.142 System NA
Designed for 2/3" Sensor Format Cameras
An Extension Tube (Sold Below) is Required for Use

Our 6.5X Zoom Lenses feature a variable magnification of 0.7 - 4.5X, which provides a 6.5X magnification adjustment (zoom) range. The MVL6X12Z provides 12 mm of fine focus travel for a large working distance range, while the MVL6X3Z provides 3 mm of fine focus travel, along with a coaxial illumination port, which is compatible with our OSL2 fiber light source and our Ø5 mm liquid light guides.

Please note that our 6.5X zoom lenses must be used with an extension tube (sold below), and can optionally be used with a 6.5X system magnifying lens attachment (also sold below). The threaded end of the zoom lenses have M25 x 0.75 internal threads and 1.093"-32 external threads. Our 6.5X zoom lenses can easily be mounted using the C1512(/M) fixed or C1513(/M) kinematic V-clamp.

6.5X System Magnifying Lens Attachments

Zoom

Optional Magnifying Lens Attachments Provide Additional 0.25 - 2X Magnification
Compatible with Our 6.5X Zoom Lenses
M25 x 0.75 External Threading

These magnifying lens attachments provide additional magnification to the zoom lens and extension tube system. These attachments are compatible with the 6.5X zoom lenses sold above, and provide a magnification factor of 0.25X, 0.5X, 0.75X, 1.5X, or 2.0X (see the Magnification Calculation section in the Overview tab above). Please note that only one lens attachment may be used at a time.

12X Zoom Lenses (0.58 - 7X Magnification Range)

Zoom

12X Zoom Range (Core Lens Has a Zoom Range of 0.58-7X)
0.005 - 0.202 System NA
Designed for 2/3" Sensor Format Cameras
An Extension Tube (Sold Below) is Required for Use

Our 12X Zoom Lenses feature a variable magnification of 0.58 - 7X, which provides a 12X magnification adjustment (zoom) range. The MVL12X12Z provides 12mm of fine focus travel for a large working distance range, while the MVL12X3Z provides 3 mm of fine focus travel, along with a coaxial illumination port, which is compatible with our OSL2 fiber light source and our Ø5 mm liquid light guides.

Please note that our 12X zoom lenses must be used with an extension tube (sold below), and can optionally be used with a 12X system magnifying lens attachment (also sold below). The MVL12X12Z has 1.093"-32 internal threads while the MVL12X3Z has 1.093"-32 internal and 1.500"-32 external threads. Our 12X zoom lenses can easily be mounted using the C1512(/M) fixed or C1513(/M) kinematic V-clamps.

12X System Magnifying Lens Attachments

Zoom

Optional Magnifying Lens Attachments Provide Additional 0.25 - 2X Magnification
Compatible with Our 12X Zoom Lenses
1.093"-32 External Threading

These magnifying lens attachments provide additional magnification to the zoom lens and extension tube system. These attachments are compatible with the 12X zoom lenses sold above, and provide a magnification factor of 0.25X, 0.5X, 0.75X, 1.5X, or 2.0X (see the Magnification Calculation section in the Overview tab above). Please note that only one lens attachment may be used at a time.

Extension Tubes for 6.5X and 12X Systems

Zoom

Required for the Use of our 6.5X or 12X Zoom Lenses
Compatible with Both Systems
Provide an Additional 0.5 - 2X Magnification
Designed for 2/3" Sensor Format Cameras
MVL20FA Features an Integrated F-Mount Bayonet Mount

These extension tubes are required for the use of our 6.5X or 12X zoom lenses, and they are compatible with both systems. They may be attached to a camera using the MVLCMC C-Mount adapter sold below. Additionally the MVL20FA extension tube has an integrated F-Mount bayonet mount for direct attachment to a camera.

C-Mount Attachment

Zoom

Connects Our Extension Tubes to an Internal C-Mount-Threaded Camera
External C-Mount (1.000"-32) Thread
Three 1/16" Hex Key Set Screws for Attachment to the Extension Tube
Use with the SM1A9 or SM1A10 Adapters to Integrate these Zoom Lenses into Thorlabs' SM1-Threaded Optomechanics

The MVLCMC adapter allows for the integration of our zoom lenses with a standard C-mount camera. The adapter features external C-mount (1.000"-32) threads and provides the correct lens spacing for the standard C-mount 17.526 flange focal distance. Additionally, when used with the SM1A9 or SM1A10 adapters, the zoom lenses sold on this page can be integrated with Thorlabs' SM1-threaded optomechanics.