Lambda 10-2
Optical Filter Changer

The Lambda 10-2 is the ideal choice for researchers whose applications are intolerant of electrical noise. The low-noise linear electronics of the controller assure that only DC voltages are present on the motor windings when the wheels are not moving.

The Lambda 10-2 is capable of independently operating up to two filter wheels and two Uniblitz® shutters. The reliable, smooth operation of the Lambda 10-2 has made it highly suitable for research applications involving fluorescence microscopy, ratio imaging, spectrophotometry, and visual physiology.

The controller electronics are designed around three embedded chips: one slave for each wheel and a master for control and communication.

The Lambda 10-2 system can hold up to ten optical filters (25mm in diameter and up to 9mm thick) which are easily loaded through an access port on the housing. Additional filters (e.g. heat and/or neutral density filters) may be inserted manually at two other locations in the optical path. The optical ports on both sides of the unit are internally threaded as C-mounts (32 threads per inch). When mounted in an upright position, the center of the optical port can be positioned from 11cm to 53cm above the mounting surface. Slide-in filter holders are optionally available for inverted configurations. A second wheel can be added to the system with no need for additional mechanical or electronic changes.

Eight user selectable speeds are provided. Filter to adjacent filter time can be set from 55 to 1200msec, depending on the number and the weight of the filters mounted in the wheel. Integral shutter drivers will open the optional shutter in 10msec. The use of a direct drive stepper-motor with advanced microstepping technology and intelligent acceleration/deceleration algorithms assures the fastest possible moves for a given inertial load, while minimizing vibrations.

The Lambda 10-2 consists of a 10-position filter wheel, a rack mountable controller, a support base and mounting rods, a controller/filter wheel interface cable, parallel and serial interface cables, two drop-in filter holders, spanner wrench, and manual. Microscope adapters for most Nikon, Olympus, Zeiss, and Leica scopes can be purchased separately.

An optional liquid light guide output is available for applications requiring absolute vibration isolation, and/or spatial uniform spatial illumination. The two meter long guide mounts directly onto the output port of the wheel. Transmission through the guide is better than 70% from 375nm to 575nm. Adapters to connect the light guide to your microscope port are available as an option.


The Lambda 10-232, was designed to remedy the problem of vignetting that may occur with a 25mm filter format in certain microscope systems. The system features a modified Lambda 10-2 controller but includes a ten position wheel that accommodates 32mm diameter filters, up to 9mm thick. The best filter to adjacent filter switching speed in this system is achieved in 75 msec. A shutter for the system is optionally available. A T-mount format is used for mounting the wheel onto your microscope. Contact Sutter Instrument for information on available T-mount adapters.


For OEM applications, the Lambda 10-2 can readily be modified to meet your specific requirements. By utilizing the 10-2 controller to drive customized wheels, we can provide an economical solution to your OEM design specification. To date we have made custom 2,3,4,5, 10 and 12 position wheels and have designed for 50mm, 32mm and 25mm filters. Our technical staff will be happy to discuss with you special application requirements.

The Sutter filter wheel systems have always been optimized for fast switching of a lightly loaded wheel. When many thick filters are installed, the added mass requires an increase in the time required to switch from one filter to another. Switching times improve significantly with filters made on a thin substrate that do not require a thick layer of additional glass to obtain the desired blocking. Semrock® has the required coating technology to offer filters with substrates down to 2mm in thickness.

We have taken the additional step of designing a special threaded ring that Semrock can install in place of their typical plain filter cells. Filters mounted in these rings can be threaded directly into the body of our filter wheels when our standard filter cups have been removed. Semrock filters actually weigh less than the filter cup and retaining ring normally used to mount filters in the Sutter wheels. Thus, if you remove our filter cups and mount the new threaded filters directly in the wheel, even a fully loaded wheel will be able to run at speeds that previously could only be used with just 2 filters installed.

The STR Semrock filters are available in both 25mm and 32mm versions and should be purchased directly from Semrock. If you are installing these filters in a sutter wheel that has filter cups, you will need to remove the cup from the position you intend to use to mount the threaded filter. When installing the new threaded filters, you will want to use the new wrench designed for this purpose. Contact Sutter for details.

  • 55 msec between adjacent filters
  • Parallel and serial interfaces
  • Simultaneous control of up to two wheels and two shutters
  • Dual integral shutter drivers
  • Linear power supply
  • Additional wheel
  • Built-in shutter
  • Dual wheels mounted in series
  • Slide-in filter holders
  • Microscope mounting adaptors
  • Table-top controller box
  • Liquid light guide


Filter Diameter
1 in | 25 mm
32 mm (for Lambda 10-232)

16 in x 11 in x 3.5 in | 41 cm x 28 cm x 9 cm

Filter wheel
5 in x 5 in x 2.25 in | 13 cm x 13 cm x 6 cm

25 lbs | 11 kg

120/240 Volts
50/60 Hertz power line

Lambda 10-2 CE Certificate

LB10-NW, LB10-NWS, LB10-NWIQ, and LB10-W32IQ CE Certificate

International prices vary by country. Please contact your local distributor or Sutter Instrument for a quotation. Prices subject to change without notice.

Catalog Number Description Price
LB10-2 25 mm filter wheel w/o shutter, support base with mounting rods, rack mount* controller unit, wheel drive cable, parallel and serial cables, (2) drop-in filter holders, spanner wrench, (10) blanking discs, power cord, and manual $ 5,710
LB10-2S Same as above with Uniblitz® shutter assembly and two slide-in filter holders $ 6,415
LB10-232 Same as LB10-2 except with 32 mm, T-mount threaded filter wheel (no drop-in filters) and modified 10-2 controller $ 6,015
LB10-232S Same as LB10-232 except with Uniblitz® shutter (no drop-in or slide-in filters)and modified 10-2 controller $ 7,165
LB10-250 Same as LB10-2 except with 50 mm, 5 position wheel $ 6,585

* Tabletop controller box available upon request.


Catalog Number Description Price
25 mm Filter Wheels - 10 position
LB10-NW 10 position 25 mm filter wheel without shutter $ 3,080
LB10-NWS 10 position 25 mm filter wheel with Uniblitz® shutter $ 3,715
LB10-NWE 10 position 25 mm filter wheel set up for emission $ 2,785
LB10-NWE-N29B 10 position 25 mm emission for bottom port of Nikon Ti $ 3,375
Thin Filter Wheels - 10 position
LB10-TW1 10 position 25mm thin filter wheel without shutter $ 3,080
LB10-TWE1 10 position 25mm thin filter wheel set up for emission $ 2,785
LB10-TW321 10 position 32mm filter wheel without shutter $ 3,345
25 mm Dual Filter Wheels
LB10-WD Back to back mounting of two 25 mm filter wheels - no drop-in filter holders $ 6,130
LB10-WDS Back to back mounting of two 25 mm filter wheels with one Uniblitz® shutter and one slide-in filter holder $ 6,960
32mm Filter Wheels - 10 position
LB10-W32 10 position 32mm filter wheel without shutter $ 3,345
LB10-W32S 10 position 32mm filter wheel Uniblitz® shutter $ 4,646
LB10-W32-Y732 32mm emission wheel for Olympus IX73/83 $ 4,515
50 mm Filter Wheel - 5 position
LB10-W50 5 position 50 mm filter wheel without shutter $ 3,900

1 Must be used with Semrock® filters that have Sutter threaded ring.
2 Includes emission adapter


Catalog Number Description Price
SLIDE-IN3 Slide-in filter holder for 25 mm wheel $ 80
DROP-IN4 Drop-in filter holder for 25 mm wheel $ 80
X100120 25 mm filter cup $ 25
X1001455 25 mm angled filter spacer $ 25
X100150 25 mm spacer $ 18
X100160 25 mm retaining ring $ 18
X100122 32 mm filter cup $ 25
X100152 32 mm spacer $ 19
X100162 32 mm retaining ring $ 19
X100124 50 mm filter cup $ 25
X100126 50 mm short filter cup $ 20
X100154 50 mm spacer $ 20
X100164 50 mm retaining ring $ 20
LLG Liquid light guide (2 meters, 3 mm dia), C-mount, lens and lens tube $ 1,470
CLAM10 25 pin breakout to BNC cable $ 105
CSHUTTER Shutter breakout cable for Uniblitz shutter $ 105
SHUTTER 25 mm replacement Uniblitz shutter (not an upgrade) $ 595
W620005 9 pin male/female serial cable $ 32
W620007 15 pin shielded cable for standard filter wheel $ 32
X100111 35mm replacement Uniblitz shutter (not an upgrade) $ 950
X100208 8 inch guide rod for stand (each) $ 54
X100210 12 inch guide rod for stand (each) $ 59
X100212 22 inch guide rod for stand (each) $ 69
X100560 25 mm spanner wrench $ 105
X100555 25 mm thin wheel spanner wrench $ 39
X100565 32 mm spanner wrench $ 39
X100558 32 mm thin wheel spanner wrench $ 39
X100567 50 mm spanner wrench $ 39

3 Slide-in filter holders are for use with Lambda 10-2 with shutter
4 Drop-in filter holders are for use with Lambda 10-2 without shutter
5 Two spacers are required for each filter position

Mounting adapters for Nikon, Zeiss, Leica and Olympus microscopes are available. Please see the Microscope Adapters page or contact Sutter Instrument for pricing or information on shutter upgrades.

Microscope Adapters
Semrock® 25mm Filters
Lambda LS