Mitutoyo Brightfield and Darkfield (BD) Infinity Corrected Objectives

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Magnification	NA	FL (mm)	Model Number	WD (mm)	Wavelength Range (nm)	Stock Number	Price	Buy

2X 2X	0.055 0.055	100.00 100.00	378-831-13 378-831-13	34 34	435 - 655 435 - 655	#18-402	95,700 ₹95,700 Request Quote	10 to 12 days ×
5X 5X	0.14 0.14	40.00 40.00	378-832-12 378-832-12	34 34	435 - 655 435 - 655	#18-403	87,000 ₹87,000 Request Quote	10 to 12 days ×
7.5X 7.5X	0.21 0.21	26.67 26.67	378-830-7 378-830-7	34 34	435 - 655 435 - 655	#18-404	1,60,080 ₹1,60,080 Request Quote	10 to 12 days ×
10X 10X	0.28 0.28	20.00 20.00	378-833-7 378-833-7	34 34	435 - 655 435 - 655	#18-405	1,07,184 ₹1,07,184 Request Quote	10 to 12 days ×
20X 20X	0.42 0.42	10.00 10.00	378-834-7 378-834-7	20 20	435 - 655 435 - 655	#18-406	2,36,640 ₹2,36,640 Request Quote	10 to 12 days ×
50X 50X	0.55 0.55	4.00 4.00	378-835-7 378-835-7	13 13	435 - 655 435 - 655	#18-407	3,19,290 ₹3,19,290 Request Quote	10 to 12 days ×
100X 100X	0.7 0.7	2.00 2.00	378-836-7 378-836-7	6 6	435 - 655 435 - 655	#18-408	3,68,880 ₹3,68,880 Request Quote	10 to 12 days ×

Filter

Understanding Microscopes and Objectives

Learn about the different components used to build a microscope, key concepts, and specifications at Edmund Optics.

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Multiphoton Microscopy

Multiphoton microscopy is ideal for capturing high-resolution 3D images with reduced photobleaching and phototoxicity compared to confocal microscopy.

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Confocal Microscopy

Confocal microscopy provides high resolution, elimination of out-of-focus glare due to spatial filtering, and reduction of light-induced damage to the sample.

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Infinite Conjugate Tube Length

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Understanding Infinity Corrected Objective Resolving Power and Magnification

Microscopes are used in a variety of fields and applications. To understand how resolving power, magnification, and other aspects work, read more at Edmund Optics.

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Using Tube Lenses with Infinity Corrected Objectives

Want to use an infinity corrected objective to make an image? You will need a tube lens to do it! Find out why and how it works at Edmund Optics.

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What is an infinity-corrected objective?

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Can I use an infinity-corrected objective in my microscope to get a longer working distance?

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What is "DIN" and "JIS"? What is the difference between them?

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I’m using the MT-1 Accessory Tube Lens and MT-1/MT-2 C-Mount Adapter. Two thin brass rings came with the adapter. How are they used?

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What is the significance of the field number of an objective and what is it dependent on?

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What is an "in-line" microscope?

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Plan Objective

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Semi-Plan Objective

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Tube Lens

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The Future of Microscope Objectives

Advances in Microscopy Tackle the Challenges of the Future

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Optical Microscopy Application: Brightfield Illumination

Looking to use a simple technique for optical microscopy? Check out this article on brightfield illumination to find out more at Edmund Optics.

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Optical Microscopy Application: Darkfield Illumination

Darkfield illumination is the opposite of brightfield illumination. Find out how darkfield differs from brightfield in optical microscopy at Edmund Optics.

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Optical Microscopy Application: Phase Contrast

Think you know all the advantages for using phase contrast in optical microscopy? Advantages, image appearance, and technical details can be found at Edmund Optics.

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You have a variety of Mitutoyo Tube Lenses (MT-4, MT-1, and MT-2). How can you connect them to a Mitutoyo objective and C-mount camera?

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I have an MT-L Accessory Tube Lens but I am unsure about mounting it to my objective and C-Mount camera. Can you explain how it works?

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What is the difference between Achromatic, Semi-Plan and Plan objectives?

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Achromatic Objective

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Apochromatic

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Confocal Microscopy

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DIN (Deutsche Industrie Norm)

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Periplan Eyepiece

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Optical Cage System Application: Digital Video Microscope

Are you looking to simplify the assembly of a digital video microscope? Find out how a TECHSPEC Optical Cage System allows for quick build at Edmund Optics.

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Optical Microscopy Application: Differential Interference Contrast

Differential interference contrast (DIC) is one of the polarization techniques that can be used in optical microscopy. Learn about this technique at Edmund Optics.

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Field Number

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Light Sheet Microscopy

Light sheet fluorescence microscopy uses a 2D laser sheet to illuminate a thin slice of the sample and excite fluorescence, reducing phototoxicity and damage.

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Optical Cage System Application: Differential Interference Contrast (DIC) Digital Microscope

Differential interference microscopy enhances the contrast of object features that are otherwise difficult to observe using brightfield microscopy.

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Darkfield Illumination

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Diffraction Limit

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Parfocality

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Digital Video Microscope Objective Setups

Digital video microscopes use a camera to capture and record images. Read more about the components needed to assemble a video microscope at Edmund Optics.

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Optical Microscopy Application: Fluorescence

Wondering how fluorescence microscopy works? Find out about the technique, systems, and more at Edmund Optics.

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Brightfield Illumination

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Field of View (FOV)

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Magnification

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Numerical Aperture (NA)

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Fluorescence Microscopy: In-Line Illumination with Imaging Filters

Want to know about fluorescence microscopy? Read this article by a Biomedical Product Line Engineer at Edmund Optics to learn more.

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Refraction

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Dimensions (mm)
Stock No.	BD Plan Apo	A	B	C	D	E	F	W.D.
#18-402	2X	61.0	4.0	40.0	37.0	42.0	44.0	34.0
#18-403	5X	61.0	4.0	40.0	37.0	42.0	44.0	34.0
#18-404	7.5X	61.0	4.0	40.0	37.0	42.0	44.0	34.0
#18-405	10X	61.0	4.0	40.0	37.0	42.0	44.0	34.0
#18-406	20X	75.0	7.0	40.0	32.0	42.0	44.0	20.0
#18-407	50X	82.0	8.5	40.0	32.0	42.0	44.0	13.0
#18-408	100X	89.0	10.0	40.0	31.5	42.0	44.0	6.0
Stock No.	BD Plan Apo SL	A	B	C	D	E	F	W.D.
#18-409	20X SL	64.5	7.5	40.0	31.0	42.0	44.0	30.5
#18-410	50X SL	75.0	7.0	40.0	32.0	42.0	44.0	20.0
Stock No.	BD Plan APO HR	A	B	C	D	E	F	W.D.
#18-411	50X HR	89.9	4.8	40.0	32.0	42.0	44.0	5.2
#18-412	100X HR	93.7	4.7	40.0	32.0	42.0	44.0	1.3

Mitutoyo Brightfield and Darkfield (BD) Infinity Corrected Objectives

Common Specifications

Products

Technical Information

Accessories

Related Products

Resources

Understanding Microscopes and Objectives

Multiphoton Microscopy

Confocal Microscopy

Infinite Conjugate Tube Length

Understanding Infinity Corrected Objective Resolving Power and Magnification

Using Tube Lenses with Infinity Corrected Objectives

What is an infinity-corrected objective?

Can I use an infinity-corrected objective in my microscope to get a longer working distance?

What is "DIN" and "JIS"? What is the difference between them?

I’m using the MT-1 Accessory Tube Lens and MT-1/MT-2 C-Mount Adapter. Two thin brass rings came with the adapter. How are they used?

What is the significance of the field number of an objective and what is it dependent on?

What is an "in-line" microscope?

Plan Objective

Semi-Plan Objective

Tube Lens

The Future of Microscope Objectives

Optical Microscopy Application: Brightfield Illumination

Optical Microscopy Application: Darkfield Illumination

Optical Microscopy Application: Phase Contrast

You have a variety of Mitutoyo Tube Lenses (MT-4, MT-1, and MT-2). How can you connect them to a Mitutoyo objective and C-mount camera?

I have an MT-L Accessory Tube Lens but I am unsure about mounting it to my objective and C-Mount camera. Can you explain how it works?

What is the difference between Achromatic, Semi-Plan and Plan objectives?

Achromatic Objective

Apochromatic

Confocal Microscopy

DIN (Deutsche Industrie Norm)

Periplan Eyepiece

Optical Cage System Application: Digital Video Microscope

Optical Microscopy Application: Differential Interference Contrast

Field Number

Light Sheet Microscopy

Optical Cage System Application: Differential Interference Contrast (DIC) Digital Microscope

Darkfield Illumination

Diffraction Limit

Parfocality

Digital Video Microscope Objective Setups

Optical Microscopy Application: Fluorescence

Brightfield Illumination

Field of View (FOV)

Magnification

Numerical Aperture (NA)

Fluorescence Microscopy: In-Line Illumination with Imaging Filters

Refraction