At Shanghai Optics, we design and manufacture custom objectives and imaging systems to support our customers’ needs in many industries, including medical, biomedical, machine version, scientific research, and metrology, etc. Taking the client’s budget and precision requirements into consideration, our experienced engineering team ensure that each design can be manufactured at a reasonable cost and the optical performance is being met based on fabrication, assembly, and alignment tolerance analysis.

The ocular lens, located at the top of a standard microscope and close to the sensor (receiving eye) receives the real image from the ocular lens, magnifies the image received and relays a virtual image to the sensor. While most eyepieces magnify 10x, there are some which provide no magnification and others which magnify as much as 30x. The magnification power of the microscope can be calculated by multiplying the magnification power of the eyepiece, or ocular lens, by the magnification power of the objective lens. For example, an objective lens with a magnification of 10x used in combination with a standard eyepiece (magnification 10x) would project an image of the specimen magnified 100x.

A microscope objective is an important component of a microscopy or imaging system for a range of science research, biological, industrial, and general lab applications.. An objective lens determines the basic performance of an optical microscope or imaging systems and is designed for various performance needs and applications. It is located closest to the object and is an important component in imaging an object onto the human eye or an image sensor.

Objectives are complex multi-element lenses. For any given application, careful consideration of the optical parameters and specifications is necessary. In many cases, custom-designed objective assemblies provide the best-fit solution for meeting all the requirements of a specialized application.  Custom parameters may include antireflection coatings, chromatic focus shift, working distance, image quality (MTF and spot size), lens mount, glass window thickness, and field of view, among others.

Most objectives are designed to image specimens with air as the medium between the objective and the cover glass. However, for achieving higher working numerical apertures, some objectives are designed to image the specimen through another medium such as special oil with a refractive index of 1.51.

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The ocular lens, or eyepiece, is also an optical assembly rather than a single lens, but it is typically more simple than the objective. Often it is composed of two lenses: a field lens and an eye lens. The design of the ocular lens determines the field of view of the microscope, as well as contributing to the total magnification of the system.

Here at Get Cameras, we understand the importance of long-term planning for your machine vision projects.  While our machine vision lenses don't have guaranteed life cycle, we're committed to keeping you informed. We work closely with the lens manufacturer and proactively monitor their availability.  If a lens is nearing its End of Life (EOL), we'll reach out well in advance to let you know.  This gives you ample time to consider a last-time purchase or explore suitable alternatives we can offer. By staying informed, you can ensure a smooth transition and avoid any potential disruptions to your projects.

Since indirect backlight illumination is generally more effective than direct illumination, most microscopes do not include an internal light source.  Instead, they rely on daylight or on background illumination such as a lightbulb. In brightfield illumination, also known as Koehler illumination, two convex lenses saturate the specimen with external light admitted from behind. These two lenses, the collector lens and condenser lens, work together to provide a bright, even, and constant light throughout the system: on the image plane as well as on the object plane.  This system of illumination is used in many compound microscopes, including student microscopes and those found in many research labs.

At Get Cameras we offer high-quality, affordable lenses for industrial image processing and we have a wide range of industrial lenses C-mount lens, F-mount lens, M12 lens, telecentric lens, and more, for industrial image processing / machine vision in various industries. Our unique selling points are:

A M12 lens, also called S-mount lens, is the most compact lens for a vision camera. For example, this lens can be used in medical equipment and compact handheld devices. The S-mount lens is very small and is often used on compact board-level cameras. Do you want to use this lens on our machine vision camera? Then it is best to purchase a CS-mount camera. You also need a CS to M12 adapter and a M12 lockring to secure the lens. The lens can be used with a vision camera that has a sensor size of 1/3", 1/2.5", 1/2.3", 1/2" or 1/1.8".

Since the objective is closest to the specimen being examined, it will relay a real image to the ocular lens. While doing so, it contributes a base magnification of anywhere from 4x (for a scanning objective lens, typically used to provide an overview of a sample) to 100x (for oil immersion objectives).

We offer a series of Microscope C-mount lenses that are compatible with our industrial cameras. Select between magnifications and opt for models with or without coaxil input.

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For keeping the objective at the proper position, there are mounting threads on almost all objectives. Commonly used mounting threads include RMS, M25 x 0.75, M26X 0.706, M32 x 0.75.

Each microscope objective is itself a complex assembly of lenses, and besides contributing to the magnification, it is the objective lens which determines the resolution power of the microscope. An objective lens can also provide optical aberration corrections.  A reflective objective, for instance, includes two mirrors within the assembly. These mirrors can focus laser light as well as provide chromatic corrections.

A simple magnifier (magnifying glass), works when the object to be examined is situated within focal length of the magnifier lens, enabling larger virtual image is produced. This type of magnifier is very limited in both resolution and magnification. A compound microscope, on the other hand, uses a relay lens system instead of the single lens, and since each lens component can contribute magnifying power, the result is greatly increased capability.

Machine vision lenses usually have a fixed focal length and manual adjustable aperture. For some machine vision applications, we understand the need of a varifocal lens or a motorized focal / zoom lens or even a auto focus lens. If you didn’t find the lens that you are looking for, please contact us.

An easy way to find the right focal length for your application is using our lens calculator. By inputting camera sensor size, field of view and working distance, a recommended focal length for your machine vision lens is calculated. As an advanced feature, you can input your camera parameters (resolution and pixel size) and find out the final FOV with the recommended focal length.

Industrial lenses for industrial image processing What are the advantages of C-mount lens? C-mount is a standardized thread connection. The main advantages are: Suitable for all our image-sensors; You can set the aperture (iris); You can set the focus; You can attach the iris and focus by means of screws; You can easily and securely mount the lens; The lens is very light sensitive. The only disadvantages of the C-mount lens is the size (relatively large) and the price. This lens is the most expensive version of machine vision lenses that you can place on an industrial vision camera.  What is a CS mount lens? A CS-mount lens is a lens that is often used in security cameras. A CS-mount lens can only be used on a CS-mount camera. When ordering our machine vision camera, you also have the option to provide the camera with CS-mount. What are the characteristics of a CS mount lens? It’s very affordable You can set the focus; Usually you can’t adjust the iris; You can easily and securely mount the CS lens; Regular new models where the old lenses go EOL, unless large orders of 2000-5000 are placed. Due to a poorer predictability of the delivery reliability of CS-mount lenses, we do not offer this standard in our online store. We only offer this for volume projects from 100 pieces per year. The prices of this lens usually vary between 8 and 25 euros per piece. In addition, we have the possibility to make adjustments to the iris. If you are interested in this lens, please let us know. What is an M12 or S-mount lens? A M12 lens, also called S-mount lens, is the most compact lens for a vision camera. For example, this lens can be used in medical equipment and compact handheld devices. The S-mount lens is very small and is often used on compact board-level cameras. Do you want to use this lens on our machine vision camera? Then it is best to purchase a CS-mount camera. You also need a CS to M12 adapter and a M12 lockring to secure the lens. The lens can be used with a vision camera that has a sensor size of 1/3", 1/2.5", 1/2.3", 1/2" or 1/1.8". Get Lenses M12 lenses We have chosen not to sell cheap M12 lenses, but high quality M12 lenses with little to no distortion. More expensive M12 lenses are suitable for very high resolution cameras and large image sensors (up to 1/1.8 "). Cheap M12 lenses often have a lot of geometric distortion and are only suitable up to a sensor size of 1/3". Special machine vision lenses We have special industrial lenses designed to meet the unique requirements of your image processing projects. C-mount lens for microscope We offer a series of Microscope C-mount lenses that are compatible with our industrial cameras. Select between magnifications and opt for models with or without coaxil input. Machine vision UV lens For UV lengths between 240nm to 1000nm, you can find UV lens available for you machine vision application. C-mount SWIR lens Our SWIR C-mount lens series are made for industrial applications and supports the wavelength range from 400nm to 1700 nm. With this wavelength, they cover visible spectrum + SWIR spectrum, being considered VIS-SWIR lenses. Varifocal and zoom lenses Machine vision lenses usually have a fixed focal length and manual adjustable aperture. For some machine vision applications, we understand the need of a varifocal lens or a motorized focal / zoom lens or even a auto focus lens. If you didn’t find the lens that you are looking for, please contact us. C-mount vs Cs-mount The difference between a C-mount machine vision lens and CS-mount lens is that the lens mount of the camera with a CS-mount is 5mm shorter. A CS-mount lens must be 5 mm shorter to the image-sensor than a C-mount lens. It is possible, by means of a lens adapter (5mm ring), to use a C-mount lens on a CS-mount vision camera. However, it is not possible to use a CS-mount lens on a C-mount vision camera. That is because in that case the lens will not be close enough to the image sensor. Lens Calculator An easy way to find the right focal length for your application is using our lens calculator. By inputting camera sensor size, field of view and working distance, a recommended focal length for your machine vision lens is calculated. As an advanced feature, you can input your camera parameters (resolution and pixel size) and find out the final FOV with the recommended focal length. Which machine vision lens should I purchase? GeT Lenses has an assortment of different types of industrial lenses. When selecting the correct machine vision lens, we recommend the following: If you have a machine vision application with low volumes or a camera with a sensor larger than 1/1.8" we recommend the use of a C-mount lens. If you develop a volume product in which the dimensions of the lens are critical, a M12 lens is the best choice. The camera sensor must not exceed 1/1.8". If you develop a volume product in which the cost of the lens is critical, then both a M12 lens or CS-mount lens are a good choice. Again, the camera sensor must not exceed 1/1.8". Machine vision lens life cycle Here at Get Cameras, we understand the importance of long-term planning for your machine vision projects.  While our machine vision lenses don't have guaranteed life cycle, we're committed to keeping you informed. We work closely with the lens manufacturer and proactively monitor their availability.  If a lens is nearing its End of Life (EOL), we'll reach out well in advance to let you know.  This gives you ample time to consider a last-time purchase or explore suitable alternatives we can offer. By staying informed, you can ensure a smooth transition and avoid any potential disruptions to your projects. Need support for industrial lenses? Would you like to purchase a machine vision lens (C-mount lens, M12 lens, telecentric lens or any other) but you still have a question? Please let us know, we are more than happy to help you further.

Two major lens components—the objective lens and the ocular lens, or eyepiece—work together to project the image of the specimen onto a sensor. This may be the human eye or a digital sensor, depending on the microscope setup.

c-mountlensmicroscope

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Microscope Objectives or Objective lenses are in many ways the heart of the microscope, and are typically mounted on a rotating nosepiece or turret to enable easy selection. Many microscopes will be equipped with a scanning objective (4x), a low power objective (10x), a high power objective (40x), and perhaps even an oil immersion objective lens.

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C-mount camera

where θ is the maximum 1/2 acceptance ray angle of the objective, and n is the index of refraction of the immersion medium. Figure 2 shows the ray angle θ of an infinity-corrected objective.

A microscope is a special optical device designed to magnify the image of an object. Depending on the type of microscope, it may project the image either onto a human eye or onto a recording or video device. As an example, consider the photographs of cells that can be found in a science textbook. These photographs have all been taken by a specialized microscope, and may be called micrographs.

We have chosen not to sell cheap M12 lenses, but high quality M12 lenses with little to no distortion. More expensive M12 lenses are suitable for very high resolution cameras and large image sensors (up to 1/1.8 "). Cheap M12 lenses often have a lot of geometric distortion and are only suitable up to a sensor size of 1/3".

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It is possible, by means of a lens adapter (5mm ring), to use a C-mount lens on a CS-mount vision camera. However, it is not possible to use a CS-mount lens on a C-mount vision camera. That is because in that case the lens will not be close enough to the image sensor.

The parfocal length is the distance between the objective mounting plane and the specimen / object. This is another specification that can often vary by manufacturer.

While the simplest of microscopes is simply a magnifying glass with a single lens, compound microscopes used today are highly complex devices with a carefully designed series of lenses, filters, polarizers, beamsplitters, sensors, and perhaps even illumination sources. The exact combination of optical components used will depend on the application of the microscope; the wavelength of light with which it is intended to be used, and the resolution and magnification required in the final image.

C-mountlensadapter

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Vintage C-mountLens

Our SWIR C-mount lens series are made for industrial applications and supports the wavelength range from 400nm to 1700 nm. With this wavelength, they cover visible spectrum + SWIR spectrum, being considered VIS-SWIR lenses.

Many objectives are designed to be used with a cover glass. Using an incorrect coverslip thickness can greatly reduce the optical performance of a microscopy system.

Room 609, 6/F, Global Gateway Tower, No.63 Wing Hong Street, Cheung Sha Wan, Kowloon, Hong Kong +852-54993705 info@shanghai-optics.com

C-Mount ZoomLens

Would you like to purchase a machine vision lens (C-mount lens, M12 lens, telecentric lens or any other) but you still have a question? Please let us know, we are more than happy to help you further.

GeT Lenses has an assortment of different types of industrial lenses. When selecting the correct machine vision lens, we recommend the following:

C-Mountlenssize

Important specifications are marked on the barrel of the objective, so students or researchers can easily identify the properties of an objective and determine the optical performance and working conditions for proper use. Figure 1 shows a diagram of an objective lens. A detailed discussion of the objection specifications is provided below.

Due to a poorer predictability of the delivery reliability of CS-mount lenses, we do not offer this standard in our online store. We only offer this for volume projects from 100 pieces per year. The prices of this lens usually vary between 8 and 25 euros per piece. In addition, we have the possibility to make adjustments to the iris. If you are interested in this lens, please let us know.

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The difference between a C-mount machine vision lens and CS-mount lens is that the lens mount of the camera with a CS-mount is 5mm shorter. A CS-mount lens must be 5 mm shorter to the image-sensor than a C-mount lens.

A CS-mount lens is a lens that is often used in security cameras. A CS-mount lens can only be used on a CS-mount camera. When ordering our machine vision camera, you also have the option to provide the camera with CS-mount.

C-Mount Macrolens

C Mount Lensebay

Objective lenses can be classified based on the objective construction, field of use, microscopy method, performance (optical aberration corrections), and magnification. Many microscope objective manufacturers offer a wide range of objective designs, which provide various degrees of optical aberration corrections for supporting different needs. Mirrors or reflective elements are used in objective lenses for the applications that requires chromatic aberration over board spectral ranges. Most traditional microscopy systems use refractive objectives such as achromatic objectives (the cheaper objectives) for laboratory microscope applications and plan apochromats (expensive objectives) for biological and science research microscope applications.

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Field of View is the area of the object that can be imaged by a microscopy system. The size of the field of view is determined by the objective magnification or focal length of the tube lens for an infinite-corrected objective. In a camera system, the field of view of the objective is related to the sensor size.

The only disadvantages of the C-mount lens is the size (relatively large) and the price. This lens is the most expensive version of machine vision lenses that you can place on an industrial vision camera.

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Magnification is one important parameter. Magnification is usually denoted by an X next to a numeric value.  Objectives are available in a range of magnifications from 2X to 200X.

The optical aberration correction determines the optical performance of an objective lens and plays a central role in the image quality and measurement accuracy of imaging or microscopy systems. According to the degrees of the aberration corrections, objective lenses are generally classified into five basic types: Achromat, Plan Achromat, Plan Fluorite (Plan Semi-Apochromat), Plan Apochromat, and Super Apochromat.