Relaylens

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As optical lenses specifications are complex, we recommend to design them according to the ISO10110 norm, in order to get quicker and more accurate quotes.

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FOV andfocal length

When choosing a lens, there is no definitive answer as it depends on your personal preferences, budget, and goals. However, some general guidelines can help you make an informed decision. Beginners or casual photographers may want to start with a zoom lens, as it gives more flexibility and ease of use. Professionals or serious photographers may invest in a prime lens for more quality and speed. If interested in a specific genre or subject of photography, such as portraits or landscapes, choose a lens that suits your needs and preferences. If unsure or wanting to experiment with different types of lenses, consider renting or borrowing them before buying them. This will give you a chance to test them out and see how they affect your photos and style.

Liquidlensedmund optics

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Zoom lenses, on the other hand, have a variable focal length, such as 18-55mm, 24-70mm, or 70-200mm. This means that you can adjust the angle of view and the magnification of your subject by turning the lens. This gives you more versatility and convenience, as you can cover a wide range of focal lengths with one lens, and adapt to different situations and environments without changing lenses or moving around. The main advantages of zoom lenses are that they allow you to experiment with different compositions and perspectives, and capture unexpected or dynamic scenes. They also save you time and space, as you don't have to carry multiple lenses or miss a shot while switching lenses. The main drawbacks of zoom lenses are that they tend to be heavier, more expensive, and less sharp than prime lenses. They also have a smaller maximum aperture, which means that they perform worse in low-light conditions, and create a deeper depth of field and less bokeh effect.

In order to enhance the optical properties of a lens, optical coatings are often applied on the lens. Optical coatings consist of thin layer(s) of metal or chemical elements that can reduce reflection of light on a certain wavelength range these coatings are called AR (Antireflect) coatings.

Vst TelecentricLens

Adjustablefocal length lens

Introduction to image sensors. When an image is being captured by a network camera, light passes through the lens and falls on the image sensor.

The material is cut in preform of specific dimension, heated and then pressed in hot tooling. After unmolding, finishing is done, like grinding of the edges or final polishing can be requested according to the quality requirements and the quality of the tooling.

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Diamond turning is usually used for complexe shapes and don’t necessitate further polishing. The equipment is similar to a CNC machining center where lenses are made one by one.

VstLensSelector

Fixed focal length lenses, also known as prime lenses, have a single focal length, such as 35mm, 50mm, or 85mm. This means that you cannot change the angle of view or the magnification of your subject by turning the lens. Instead, you have to move closer or farther away from your subject to compose your shot. The main advantages of prime lenses are that they tend to be sharper, faster, lighter, and cheaper than zoom lenses. They also have a wider maximum aperture, which allows you to capture more light, create a shallow depth of field, and achieve a bokeh effect. The main drawbacks of prime lenses are that they limit your flexibility and creativity, as you have to switch lenses or change your position to get different perspectives. They also require more skill and practice to master, as you have to be more aware of your distance and framing.

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If you want to get the best results, it’s important to know how to use your lens effectively. Start by learning the characteristics and limitations of your lens, such as its focal length, aperture, focus, distortion, and aberration. You should also understand how to control your exposure, depth of field, and motion blur by adjusting your aperture, shutter speed, and ISO settings. Additionally, it’s important to learn how to compose your shots using the rule of thirds, leading lines, framing, balance, and symmetry. Furthermore, you should be aware of common lens problems like lens flare, vignetting, chromatic aberration and diffraction. Lastly, make sure to clean and maintain your lens regularly by using a soft cloth, a blower and a lens cleaning solution. Store it in a dry and cool place when not in use.

The process also referred as cold machining consist of removing material with mechanical friction of grinding or polishing pads including hard grains. The process usually long (some hours) can be semi automated or partially automated. The polishing pads are changed several times along the process with smaller and smaller grain in order to reach the required quality. The higher the polishing quality request, the higher the time a lens need to be polished.

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Optical lenses

When we speak of optics, optical lens is the first optical component that comes to mind, and indeed optical lenses are now everywhere in our everyday life. We will see the different types, their manufacturing process and their different applications.

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If you are into photography, you probably know that choosing the right lens for your camera can make a big difference in the quality and style of your photos. But how do you decide between a fixed focal length lens and a zoom lens? In this article, we will explain the pros and cons of each type of lens, and give you some tips on how to use them effectively.

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This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

Plano-convexlens

An optical lens is a passive optical component that is transparent to wavelength in the optical field (from deep UV to far IR) and that will alter the path of light either in converging or diffracting the light.

Designing of optical lenses can be done with specific software, Zemax being the most famous of them. It usually require optical designer with sound understanding of optical materials, optical shapes and optics manufacturing constraints.

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Most common optical lenses are made of optical glass (from main manufacturer like : Schott, Corning, Ohara or CDGM) but can also be made of metal (Germanium) or other materials (ceramics, Silicon, Zinc selenide, sapphire, polymers etc.).

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