f-number formula

At the core of the MX7 are fourteen independently controlled Z and theta motors, making it one of the world's first multi-axis pick-and-place technologies. Each of these motors is individually guided, enabling much more reliable and repeatable placement in both the Z and theta axes. This level of granular control is unprecedented in the industry and opens up new possibilities for high-precision assembly.

F-stop vs aperture

To prevent component damage, each of the seven placement nozzles operates with a less than 2-newton placement force. At the same time, they eject a highly controlled stream of air during component placement, virtually eliminating the risk of unnecessary nozzle impact.

Increased speed was one of the key design objectives in the development of the new platform, resulting in a 48% increase in top placement speeds compared to previous high-speed mountheads. This boost in performance is made possible by an entirely new servo platform, which updates at a rate of 80,000 times per second in order to optimize every movement. In combination with state-of-the-art vision and pressure sensor systems, it allows for rapid pick-and-place operations without compromising accuracy or reliability.

The A-mode (Aperture Priority mode) is a mode that allows you to set the f-number the way you want. In this mode, the camera automatically sets the shutter speed and ISO sensitivity to shoot a well-exposed photograph. This mode is suitable when you want to defocus the foreground and background, with the focus only on the main subject, or when you want to render the entire landscape clearly by focusing on the wide range from the foreground to the background.

F number camerafor beginners

A new range of unique tool types on the MX7 mounthead, together with new toolbanks for tool changes, ensures more precise component handling for a wider array of applications. Each nozzle is also equipped with a unique ID to improve process traceability and analysis.

Fstop symbol

The amount of light coming into the camera affected by the size of the aperture is quantified as f-numbers. F-numbers have fixed standard values, such as F2, F2.8, F4, F5.6, and F8. As the f-number gets larger, the aperture is closed and less light passes through the lens. As the f-number gets smaller, the aperture is opened and more light passes through the lens. For example, if the aperture is changed from F8 to F5.6, the amount of light is doubled. As a result, even if the shutter speed is doubled, it can let the same amount of light into the camera, as long as other conditions are the same.

“Fortunately, every engineer on our team has more than a decade’s experience solving exactly these challenges,” he concludes. “Everyone knew how long it takes to optimize a new head and system, so we factored in all the variables prudently and executed each plan carefully. And now, it’s paying off for Mycronic customers. I’m convinced the MYPro A40 and MX7 will impress the industry, taking PCB assembly to completely new heights.”

Despite its gentle touch, the MX7 mounthead unit is capable of up to 3G acceleration forces, making quick work of even the most complex board layouts.

Although the individual MX7 nozzles are spaced just 20 mm apart, the system is capable of mounting components up to six times larger than those placed by previous high-speed mountheads.

F-number lens

The aperture is a part that adjusts the amount of light coming from the lens. As shown in the pictures below, it is located inside the lens, and it adjusts the amount of incoming light by changing the size of the opening.

Generally, the smaller the f-number is, the more light comes into the camera, and the more defocus effect you can enjoy. Each lens has a minimum f-number, and this is called the maximum aperture of the lens. To check the maximum aperture of a lens, refer to the lens specifications or the value printed on the lens, as shown in the picture below. A lens with a small f-number is generally called a fast lens.

As the f-number gets larger, the opening to let the light into the camera gets smaller. As a result, the shutter speed will slow down, which may cause the image to blur because of camera shake. If this occurs, try shooting with a smaller f-number again.

F-stop chart

f-number calculator

A new generation of flexible, high-speed pick-and-place technologies is here. The result of several years of in-house development, the new MX7 mounthead technology goes further than ever before in bridging the gap between high-mix and high-volume PCB assembly.

Mount a far wider range of components at 48% higher top speeds. The MX7 mounthead technology is the fast-beating heart of the next-generation MYPro A40 pick-and-place machines, making it possible to simultaneously boost production volumes and take on more jobs. Driven by seven high-precision nozzles and fourteen independent motors, the MX7 represents a leap forward in performance and versatility.

To solve these challenges, a number of innovative engineering solutions had to be developed from scratch, explains Tanaka. “First, we had to be very disciplined in reducing the weight of all the moving parts. Then, it was even more challenging to both miniaturize and find the ideal placement for the touch detection mechanism to ensure enhanced usability: one of the real trademarks of every Mycronic solution.”

A combination of finely controlled vision and motion systems, together with a robust gantry platform, contributes to significantly lower maintenance and calibration requirements.

The aperture also affects the range of in-focus area, or the amount of defocus in a photograph. The following shows the comparison between the amount of defocus and the aperture. You can see the foreground and background are defocused more as the f-number gets smaller.

Mycronic is a global supplier of high precision production equipment, and together with our customers we are committed to extending the frontiers of electronics technology. Headquartered in Sweden, with more than 2,000 employees and represented in more than 50 countries.

F number cameracanon

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The MX7 mounthead takes flexibility to the next level, enabling the handling of component sizes up to 45×45×15 mm or 150×40×15 mm, and down to 01005 (0.4×0.2 mm). This amounts to a substantial increase in the range of component types and sizes mounted by a single platform, making the MYPro A40 a versatile solution for a wide range of applications. Whether you're dealing with fine-pitch CSPs, FCs, BGAs, or larger, odd-shaped components, the MX7 can handle them all while minimizing the risk of damaging, mis-picking or dropping parts.

The MX7 enables top placement speeds of 59,000 cph – a full 48% speed increase compared to its predecessor. In beta tests, the productivity increases are significantly higher, thanks to the platform’s ability to handle a wider range of components with less downtime in actual production conditions.