Adapters for Cerna® Microscopes

Adapters for Epi-Illumination, Camera, Trinocular, Eyepiece, and Condenser Ports
Customize Cerna Microscopes Using Thorlabs' Optomechanical Components

SM1A58

Camera Port Adapter

CSA1003

Trinocular Port Adapter

SM2A56

Epi-Illumination
Module Adapter

LCPN1

Condenser Port
Adapter

SM2N2

Eyepiece Adapter

Application Idea

SM2A56 Epi-Illumination Module Adapter Used to Mount a Solis^® High-Power LED to an Epi-Illumination Module on a Cerna Microscope

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Overview
Microscope Dovetails
DIY Cerna Interfaces
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Click on Each Port to View Available Adapters

Cerna Microscope Ports

Cerna Microscope

Features

Extends Versatility of Thorlabs' Construction Systems to Cerna^® Microscopes
Provides Compatibility with SM1 (1.035"-40) Lens Tubes, SM30 (M30.5 x 0.5) Lens Tubes, SM2 (2.035"-40) Lens Tubes, and 30 mm and 60 mm Cage Systems
Contact Tech Support About Custom Adapters, Including for Other Microscopes

Trinocular Port Adapters
These adapters integrate the Cerna platform with Thorlabs' 30 mm and 60 mm cage construction systems, making them ideal for creating custom widefield viewing and epi-illumination apparatuses.

Camera Port Adapter
The SM1A58 adapter is designed to allow components with SM1 threading, SM2 threading, or 30 mm cage system compatibility to be mounted to the camera port. This adapter is ideal for inserting custom optics, as well as our scientific cameras, into brightfield and fluorescence microscope systems.

Condenser Port Adapters
These condenser adapters connect to the condenser holder, allowing DIY light conditioning setups to be integrated into a Cerna microscope.

Epi-Illumination Module Adapter
The SM2A56 adapter allows a collimated illumination source to attach to the epi-illumination module of a Cerna microscope.

Eyepiece Adapter
The SM2N2 adapter replaces the lens element on an eyepiece of the Cerna microscope's trinoculars, allowing custom-built optical detection systems to attach to either eyepiece on the trinoculars.

Note: Thorlabs does not guarantee compatibility with other industry-standard microscopes not mentioned on this wepage.

Adapters for Industry Standard Microscopes
Cerna DIY Series
Leica DMI
Nikon Eclipse Ti (Inverted)
Upright Nikon Eclipse
Olympus BX and IX
Zeiss Axioskop and Examiner

Thorlabs Dovetail Reference^a
Type	Shape	Outer Dimension	Angle
95 mm	Linear	95 mm	45°
D1N	Circular	Ø2.018"	60°
D2N^b	Circular	Ø1.50"	90°
D2NB^b	Circular	Ø1.50"	90°
D3N	Circular	Ø45 mm	70°
D5N	Circular	Ø1.58"	90°
D6N	Circular	Ø1.90"	90°
D7N	Circular	Ø2.05"	90°
D1T	Circular	Ø1.50"	60°
D3T	Circular	Ø1.65"	90°
D1Y	Circular	Ø107 mm	60°
D2Y	Circular	Ø2.32"	50°
D3Y	Circular	Ø1.75"	90°
D4Y	Circular	Ø56 mm	60°
D5Y	Circular	Ø46 mm	60°
D6Y	Circular	Ø41.9 mm	45°
D1Z	Circular	Ø54 mm	60°
D2Z	Circular	Ø57 mm	60°
D3Z	Circular	Ø54 mm	45°

These dovetail designations are specific to Thorlabs products and are not used by other microscope manufacturers.
D2N and D2NB dovetails have the same outer diameter and angle, as defined by the drawings below. The D2N designation does not specify a height. The D2NB designation specifies a dovetail height of 0.40" (10.2 mm).

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This photo shows the male D1N dovetail on the trinoculars next to the female D1N dovetail on the epi-illumination arm.

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This photo shows the male 95 mm dovetail on the microscope body and the female 95 mm dovetail on the CSA1002 Fixed Arm.

Introduction to Microscope Dovetails

Dovetails are used for mechanical mating and optical port alignment of microscope components. Components are connected by inserting one dovetail into another, then tightening one or more locking setscrews on the female dovetail. Dovetails come in two shapes: linear and circular. Linear dovetails allow the mating components to slide before being locked down, providing flexible positioning options while limiting unneeded degrees of freedom. Circular dovetails align optical ports on different components, maintaining a single optical axis with minimal user intervention.

Thorlabs manufactures many components which use dovetails to mate with our own components or those of other manufacturers. To make it easier to identify dovetail compatibility, we have developed a set of dovetail designations. The naming convention of these designations is used only by Thorlabs and not other microscope manufacturers. The table to the right lists all the dovetails Thorlabs makes, along with their key dimensions.

In the case of Thorlabs’ Cerna^® microscopes, different dovetail types are used on different sections of the microscope to ensure that only compatible components can be mated. For example, our WFA2002 Epi-Illuminator Module has a male D1N dovetail that mates with the female D1N dovetail on the microscope body's epi-illumination arm, while the CSS2001 XY Microscopy Stage has a female D1Y dovetail that mates with the male D1Y dovetail on the CSA1051 Mounting Arm.

To learn which dovetail type(s) are on a particular component, consult its mechanical drawing, available by clicking on the red Docs icon () below. For adapters with a female dovetail, the drawing also indicates the size of the hex key needed for the locking setscrew(s). It is important to note that mechanical compatibility does not ensure optical compatibility. Information on optical compatibility is available from Thorlabs' web presentations.

For customers interested in machining their own dovetails, the table to the right gives the outer diameter and angle (as defined by the drawings below) of each Thorlabs dovetail designation. However, the dovetail's height must be determined by the user, and for circular dovetails, the user must also determine the inner diameter and bore diameter. These quantities can vary for dovetails of the same type. One can use the intended mating part to verify compatibility.

In order to reduce wear and simplify connections, dovetails are often machined with chamfers, recesses, and other mechanical features. Some examples of these variations are shown by the drawings below.

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Two examples of how circular male dovetails can be manufactured.

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Two examples of how circular female dovetails can be manufactured.

Standard Mechanical Interfaces on DIY Cerna^® Components

The table below gives the dovetail, optical component threads, and cage system interfaces that are present on each DIY Cerna component. If a DIY Cerna component does not have one of the standard interfaces in the table, it is not listed here. Please note that mechanical compatibility does not ensure optical compatibility. Information on optical compatibility is available from Thorlabs' web presentations.

Item #	Microscope Dovetails										Optical Component Threads^a		Cage Systems^b
Item #	95 mm	D1N	D2N	D2NB	D3N	D5N	D1T	D3T	D1Y	D5Y	Internal	External	Cage Systems^b
2CM1	-	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40) and SM2^d (2.035"-40)	SM1^c (1.035"-40)	60 mm^d
2CM2	-	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40) and SM2^d (2.035"-40)	SM1^c (1.035"-40)	30 mm^c
BSA2000^e	-	-	-	-	Female	-	-	-	-	-	-	-	-
CEA1350	Male	Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CEA1400	Male	Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CEA1500	Male	Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CEA1600	Male	Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CFB1500	Male	-	-	-	-	-	-	-	-	-	-	-	-
CSA1000	Female	-	-	-	-	-	-	-	-	-	-	-	-
CSA1001	Female	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	-	30 mm^c
CSA1002	Female	-	-	-	-	-	-	-	-	-	SM2^d (2.035"-40)	-	60 mm^d
CSA1003	-	Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CSA1051	Female	-	-	-	-	-	-	-	Male	-	-	-	-
CSA1200^e,f	-	-	-	-	-	-	-	-	-	-	-	-	60 mm^d
CSA1400^e	-	-	-	-	-	-	Female	-	-	-	-	-	60 mm^d
CSA1500^e,g	-	-	-	-	-	-	-	-	-	-	-	-	-
CSA2000^e	-	-	-	-	Female	-	-	-	-	-	SM2^d (2.035"-40)	-	60 mm^d
CSA2001	-	-	-	-	Female	-	-	-	-	-	-	SM2^d (2.035"-40)	-
CSA2100^e	-	-	-	-	-	-	-	-	-	-	SM2^d (2.035"-40)	-	60 mm^d
CSA3000(/M)	-	Male	-	-	-	-	-	-	-	-	-	-	-
CSA3010(/M)	-	Male	-	-	-	-	-	-	-	-	-	-	30 mm^c and 60 mm^d
Item #	95 mm	D1N	D2N	D2NB	D3N	D5N	D1T	D3T	D1Y	D5Y	Internal	External	Cage Systems
CSC1001	-	-	-	-	Male	-	-	-	-	-	-	-	-
CSC1002	-	-	-	-	Male	-	-	-	-	-	-	-	-
CSC2001	-	-	-	-	Male	-	-	-	-	-	-	-	-
CSD1001	-	Male & Female	-	Female	-	-	-	-	-	-	-	-	-
CSD1002	-	Male & Female	-	-	-	-	-	-	-	-	-	C-Mount^h	-
CSE2000	-	Male & Female	-	-	-	-	-	-	-	-	-	-	60 mm^d
CSE2100	-	Male & Female	-	-	-	-	-	Female	-	-	SM1^c (1.035"-40)	-	30 mm^c and 60 mm^d
CSE2200	-	Male & Female	-	-	-	-	-	Female	-	-	SM1^c (1.035"-40)	-	30 mm^c and 60 mm^d
CSN100^e	-	-	-	-	-	-	-	-	-	-	M32 x 0.75	-	60 mm^d
CSNK10	-	-	-	-	-	-	-	-	-	-	M32 x 0.75	-	60 mm^d
CSNK100^e	-	-	-	-	-	-	-	-	-	-	M32 x 0.75	-	60 mm^d
CSN200	-	-	-	-	-	-	Male	-	-	-	M32 x 0.75	-	-
CSN210	-	-	-	-	-	-	Male	-	-	-	M32 x 0.75	-	-
CSN1201^f	-	-	-	-	-	-	-	-	-	-	M32 x 0.75	-	-
CSN1202^f	-	-	-	-	-	-	-	-	-	-	M25 x 0.75	-	-
CSS2001	-	-	-	-	-	-	-	-	Female	-	-	-	-
LAURE1	-	Male	Female	-	-	-	-	-	-	-	-	-	-
LAURE2	-	Male	Female	-	-	-	-	-	-	-	-	-	-
LCPN1	-	-	-	-	Male	-	-	-	-	-	SM30 (M30.5 x 0.5)	-	30 mm^c and 60 mm^d
LCPN2	-	Male	-	-	-	-	-	-	-	-	SM30 (M30.5 x 0.5)	-	30 mm^c and 60 mm^d
LCPN3	-	Male	-	-	-	-	-	-	-	Female	SM30 (M30.5 x 0.5)	-	60 mm^d
Item #	95 mm	D1N	D2N	D2NB	D3N	D5N	D1T	D3T	D1Y	D5Y	Internal	External	Cage Systems
OPX2400(/M)	-	Male & Female	-	-	-	-	-	-	-	-	SM2^d (2.035"-40)	-	60 mm^d
SM1A70	-	-	-	-	-	-	-	-	-	-	SM30 (M30.5 x 0.5)	SM1^c (1.035"-40)	-
SM1A58	-	-	Male	Male	-	-	-	-	-	-	SM1^c (1.035"-40)	SM2^d (2.035"-40)	30 mm^c
SM2A56	-	-	-	-	-	-	-	Male	-	-	-	SM2^d (2.035"-40)	-
TC1X	-	-	Male	-	-	-	-	-	-	-	-	-	-
WFA0150	Female	-	-	-	-	-	-	-	-	-	-	-	-
WFA1000	-	-	-	-	-	-	-	-	-	-	-	-	30 mm^c
WFA1010	-	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	-	30 mm^c
WFA1020	-	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	-	30 mm^c
WFA1051	-	-	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	-	30 mm^c
WFA1100	-	-	-	-	-	-	-	-	-	-	-	-	30 mm^c
WFA2001	-	Male & Female	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	SM1^c (1.035"-40)	-
WFA2002	-	Male & Female	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	-	30 mm^c
WFA4100	-	Male	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	C-Mount^h	-
WFA4101	-	Male	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	C-Mount^h	-
WFA4102	-	Male	-	-	-	-	-	-	-	-	SM1^c (1.035"-40)	C-Mount^h	-
WFA4111	-	Male	-	-	-	-	-	-	-	-	-	SM2^d (2.035"-40)	-
WFA4112	-	-	-	Male	-	-	-	-	-	-	-	C-Mount^h	-
Item #	95 mm	D1N	D2N	D2NB	D3N	D5N	D1T	D3T	D1Y	D5Y	Internal	External	Cage Systems
XT95RC1(/M)	Female	-	-	-	-	-	-	-	-	-	-	-	-
XT95RC2(/M)	Female	-	-	-	-	-	-	-	-	-	-	-	-
XT95RC3(/M)	Female	-	-	-	-	-	-	-	-	-	-	-	-
XT95RC4(/M)	Female	-	-	-	-	-	-	-	-	-	-	-	-
XT95P12(/M)	Female	-	-	-	-	-	-	-	-	-	-	-	-
ZFM1020	Female	-	-	-	-	-	-	-	-	-	-	-	-
ZFM1030	Female	-	-	-	-	-	-	-	-	-	-	-	-
ZFM2020	Female	-	-	-	-	-	-	-	-	-	-	-	-
ZFM2030	Female	-	-	-	-	-	-	-	-	-	-	-	-

Thorlabs' optical component thread adapters can be used to convert between C-Mount threads, SM1 threads, SM2 threads, and virtually every other optical thread standard.
Our cage system size adapters and drop-in adapter can be used to convert between 16 mm, 30 mm, and 60 mm cage systems.
Our 30 mm cage plates can convert between SM1 lens tubes and 30 mm cage systems.
Our 60 mm cage plates can convert between SM2 lens tubes and 60 mm cage systems.
Attach to a ZFM focusing module to add a female 95 mm dovetail.
The CSA1200 mounting arm is compatible with the CSN1201 and CSN1202 nosepieces.
This blank arm is designed for custom DIY machining for non-standard components, threads, and bores.
C-Mount and CS-Mount standards feature the same 1.00"-32 threads, but C-Mounts have a 5 mm longer flange-to-sensor distance.

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Trinocular Port Adapters for Cerna Microscopes

Click to Enlarge
Here, our WFA4111 D1N Adapter is being used to support an SM2 lens tube that contains user-selected optics for forming an image on a Scientific Camera.

Click for Details
In this photo, the CSA1003 D1N Adapter is connecting a 60 mm cage system to a WFA2002 Epi-Illuminator Module.

Extend Versatility of Thorlabs' Lens Tube and Cage Construction Systems to Cerna Systems
Compatible with Cerna Modules that Have D1N or D5Y Dovetails
LCPN2: Compatible with SM30 Lens Tube, 30 mm Cage, and 60 mm Cage Construction Systems
LCPN3: Compatible with SM30 Lens Tube and 60 mm Cage Construction Systems
WFA4111: Compatible with SM2 Lens Tubes
CSA1003: Compatible with 60 mm Cage Construction Systems

These adapters integrate the Cerna platform with our SM30 (M30.5 x 0.5) lens tube, SM2 (2.035"-40) lens tube,
30 mm cage, and 60 mm cage construction systems, making them ideal for creating custom widefield viewing and epi-illumination apparatuses. In particular, we offer the LCPN3 trinocular port adapter, designed to allow Olympus trinoculars that have a male D5Y dovetail to be used with Cerna systems. See the images to the right for application ideas and the table below for the adapters' mechanical features.

The dovetail designations are specific to Thorlabs products; see the Microscope Dovetails tab for details.

For specific compatibility between different adapters and DIY Cerna Components see the DIY Cerna Interfaces tab.

Item #	LCPN2	LCPN3	WFA4111	CSA1003
Photo (Click to Enlarge)
Dovetail^a	Male D1N	Male D1N Female D5Y	Male D1N	Female D1N
Threading	Internal SM30^b (M30.5 x 0.5)		Internal M38 x 0.5^c External SM2 (2.035"-40)	None^d
Cage Compatibility	30 mm Cage System (4-40 Tap^e, 4 Places) 60 mm Cage System (Ø6 mm Bore, 4 Places)	60 mm Cage System (Ø6 mm Bore, 4 Places)	None^d	60 mm Cage System (Ø6 mm Bore, 4 Places)
Clear Aperture	Ø1.10" (27.9 mm)		Ø1.47" (37.0 mm)	Ø1.50" (38.1 mm)
Adapter Profile (Click for Drawing)

Additional information on dovetails is available in the Microscope Dovetails tab.
This internal SM30 threading is compatible with our SM30RR retaining rings. Two SM30RR retaining rings are included.
This internal M38 x 0.5 threading is compatible with our SM38RR retaining rings.
An SM2-threaded cage plate can be used to convert between SM2 lens tubes and 60 mm cage systems.
These tapped holes are on the side opposite the dovetail only.

Camera Port Adapter for Cerna Microscopes

Item #	SM1A58
Photo (Click for Details)
Dovetail^a	Male D2N Male D2NB
SM Threading	Internal SM1^b (1.035"-40) External SM2 (2.035"-40)
Cage Compatibility	30 mm Cage System (4-40 Tap, 4 Places)
Clear Aperture	Ø1.008" (25.6 mm)
Adapter Profile (Click for Drawing)

Additional information on dovetails is available in the Microscope Dovetails tab.
This internal SM1 threading is not deep enough for mounting optics.

Attach Custom-Built Optical Systems or Detectors to the Camera Port of Thorlabs' Cerna Microscopes
Compatible with SM1, SM2, and 30 mm Cage Construction Systems

The SM1A58 is designed so that custom-built optical systems or detectors based on Thorlabs' components may be attached to the camera port of Thorlabs' Cerna Microscopes or Upright Nikon Eclipse Microscopes. This adapter utilizes a male D2N dovetail to secure the adapter to the port. It also features internal SM1 (1.035"-40) threading for Ø1" Lens Tubes, external SM2 (2.035"-40) threading for Ø2" Lens Tubes, and 4-40 tapped holes on 30 mm centers for attaching cage system rods.

Industry-standard C-mount cameras, like Thorlabs' Scientific CCD Cameras, can be attached directly to the internal SM1 threads of the SM1A58 using the SM1A39 external C-Mount to external SM1 adapter, available separately. Internally threaded SM1 Cameras, like Thorlabs' Quantalux^®, Kiralux^®, and Zelux^® cameras, can be easily integrated into microscope systems using the internal SM1 threads or external SM2 threads on the SM1A58 adapter. The internal SM1 threads can be mounted with an SM1 lens tube spacer or an SM1 lens tube coupler with external threads. The external SM2 threads on the SM1A58 are commonly connected with an SM1A2 adapter, which has internal SM2 to external SM1 threads.

Our SM1 or SM2 lens tubes can be used to place the camera at the correct parfocal distance; the exact distance will depend upon the specific trinoculars or other camera ports present on your Cerna microscope.

In addition, an SM1-threaded dust cover (Item # SM1CP2) is included to keep the port closed when not in use.

Condenser Port Adapters for Cerna Microscopes

Item #	CSA2001	LCPN1
Photo (Click to Enlarge)
Dovetail^a	Female D3N	Male D3N
SM Threading	External SM2 (2.035"-40)	Internal SM30^b (M30.5 x 0.5)
Cage Compatibility	None^c	30 mm Cage System (4-40 Tap^d, 4 Places) 60 mm Cage System (Ø6 mm Bore, 4 Places)
Clear Aperture	Ø1.58" (40.0 mm)	Ø1.10" (27.9 mm)
Adapter Profile (Click for Drawing)

Additional information on dovetails is available in the Microscope Dovetails tab.
This internal SM30 threading is compatible with our SM30RR retaining rings. Two SM30RR retaining rings are included.
An SM2-threaded cage plate can be used to convert between SM2 lens tubes and 60 mm cage systems.
These tapped holes are on the side opposite the dovetail only.

Attach DIY Light Conditioning Setups to Cerna Microscopes
Extends Versatility of Thorlabs' Lens Tube and Cage Construction Systems to Cerna Systems
CSA2001: Compatible with SM2 Lens Tubes
LCPN1: Compatible with SM30 Lens Tubes, 30 mm Cage Systems, and 60 mm Cage Systems

The CSA2001 adapter is used to mount a condenser with a male D3N dovetail to an optical assembly that uses Thorlabs' SM2 lens tubes. A 2 mm hex setscrew is included to secure the dovetail of the adapter to the condenser.

The LCPN1 adapter allows the user to attach a custom-built condenser or other light conditioning module to a Cerna, inverted Nikon Eclipse Ti, or upright Nikon Eclipse microscope. It features internal SM30 (M30.5 x 0.5) threading for Ø30 mm lens tubes; two SM30RR retaining rings are included to secure an optic inside the adapter. Through holes with side-located locking 8-32 setscrews (5/64" [2 mm] hex) can be used to attach Ø6 mm cage rods for 60 mm cage systems. The side opposite the dovetail has 4-40 tapped holes on 30 mm centers for 30 mm cage systems.

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Our CSA2001 adapter has a female D3N dovetail that mates to the male D3N dovetail on a condenser. Here, the external SM2 threads on the adapter are threaded into our CXY2 mount.

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LCPN1 Adapter Attached to Inverted Nikon Eclipse Condenser Holder

Epi-Illumination Module Adapter for Cerna Microscopes

Item #	SM2A56
Photo (Click for Details)
Dovetail^a	Male D3T
SM Threading	External SM2 (2.035"-40)
Cage Compatibility	None^b
Clear Aperture	Ø1.40" (35.6 mm)
Adapter Profile (Click for Drawing)

Additional information on dovetails is available in the Microscope Dovetails tab.
An SM2-threaded cage plate can be used to convert between SM2 lens tubes and 60 mm cage systems.

Connect a Collimated Illumination Source to an Epi-Illumination Module of a Cerna Microscope
Compatible with CSE2100 and CSE2200 Epi-Illuminator Modules

The SM2A56 adapter allows the user to mount a collimated illumination source to a Cerna epi-illumination module. The adapter uses a D3T dovetail to attach to the CSE2100 and CSE2200 epi-illuminator modules and uses external SM2 (2.035"-40) threading to attach collimated illumination sources, such as Thorlabs' Solis^® LEDs. See the table to the left for adapter attachment compatibility.

Trinocular Eyepiece Adapter for Cerna Microscopes

Item #	SM2N2
Photo (Click to Enlarge)
Microscope Connection	Ø1.18" Eyepiece Tube (5 Built-In Alignment Slots)
SM Threading	Internal SM1 (1.035"-40) External SM2 (2.035"-40)
Cage Compatibility	30 mm Cage System (4-40 Tap, One Side, 4 Places)
Clear Aperture	Ø0.90" (22.9 mm)
Adapter Profile (Click for Drawing)

Click to Enlarge
Two SM2N2 adapters attached to the trinocular eyepieces.

Replace Trinocular Eyepiece for DIY Construction
Compatible with SM1, SM2, and 30 mm Cage Construction Systems

The SM2N2 Eyepiece Adapter allows custom-built optical detection systems to attach to either eyepiece on the trinoculars of a Cerna Microscope. This adapter replaces the lens element on the eyepiece that sets the image plane at the back of the eyes (see image to the right). Five built-in alignment slots ensure the adapter fits snugly inside the eyepiece without rotation; because of the drop-in nature of this adapter, take care the attached system does not overbalance the 40 g eyepiece adapter when it is inside the trinoculars.

This adapter features internal SM1 (1.035"-40) threading for Ø1" lens tubes; two SM1RR retaining rings are included to secure an optic inside the adapter. The adapter also has external SM2 (2.035"-40) threading for Ø2" lens tubes. The face with the item # engraving has 4-40 tapped holes for 30 mm cage systems.