Types of Spherical Lenses and Their Uses for sale

May. 17,

For more information, please visit our website.

Introduction:

A magnifying glass, a type of lens, is used to enlarge the image of small print. Lenses are transparent objects made of glass or other transparent materials. They are extensively used in spectacles, microscopes, and telescopes because they can form various kinds of images of objects placed in front of them. In this section, we will explore the types and uses of spherical lenses and how they form images.

 

Spherical Lenses and Their Uses:

 

Spherical lenses are transparent objects made of transparent materials such as glass or clear plastic. They are widely used in spectacles, microscopes, and telescopes.

 

Spherical lenses are transparent in nature, as they are made up of glass or clear plastic. Hence, they refract light as light can pass through them completely. Light undergoes a change in speed on entering a lens and again on emerging out of it.

 

Spherical lenses are used in:

- Telescopes to observe distant celestial bodies such as planets and stars.

- Microscopes to provide highly magnified images of microscopic objects like microorganisms.

- Spectacles to correct vision for individuals with various eye defects.

- Peepholes to see the person standing outside the door.

 

Types of Spherical Lenses:

 

Spherical lenses are basically of two types, viz., convex and concave lenses.

 

- Those lenses that are thicker in the middle compared to the edges are called convex lenses. Both the surfaces of a convex lens are convex, i.e., bulged out.

- Those lenses that are thicker in the edges compared to the middle part are called concave lenses. Both the surfaces of a concave lens are concave, i.e., bulged in.

 

Convex Lenses:

 

When a parallel beam of light passes through a convex lens, it converges to a point after refraction. This point is called the focal point or focus of a convex lens. Because a parallel beam of light converges to a point after refraction, a convex lens is also known as a converging lens.

 

Concave Lenses:

 

When a parallel beam of light passes through a concave lens, it diverges in such a way that it appears to originate from a point after refraction. This point is called the focal point or focus of a concave lens. Because a parallel beam of light diverges after refraction, a concave lens is also known as a diverging lens.

 

Summary

Lenses are transparent objects made from materials such as glass and clear plastic. They are widely used in spectacles, microscopes, and telescopes. Spherical lenses come in two main types: convex and concave lenses.

 

Convex lenses are thicker in the middle than at the edges, with both surfaces bulging outward. When a parallel beam of light passes through a convex lens, it converges to a point after refraction, known as the focal point. Due to this converging property, convex lenses can focus light to start a fire.

 

Concave lenses are thicker at the edges than in the middle, with both surfaces curving inward. When a parallel beam of light passes through a concave lens, it diverges as if originating from a point after refraction, known as the focal point. Concave lenses do not converge light and cannot be used to start a fire.

 

A convex lens can form various types of images, including real, virtual, inverted, upright, diminished, magnified, and the same size as the object. In contrast, a concave lens only forms virtual, upright, and diminished images of an object.

Spheres - Lenses with achromatic function

Spherical lenses, also known as round optics or spheres, are used to collect, diverge or focus light. They are used for various technological applications, for example in medical technology and semiconductor industry, or as a component in achromatic lens systems. Achromatic lenses consist of two to three lenses cemented together. This combination generally serves to reduce spherical aberration.

Spheres from asphericon

Thanks to modern manufacturing technologies, we are able to produce spherical lenses of high quality and from different materials. In addition to optical glasses, these include crystals such as germanium and silicon, metals, PMMA and IR materials. For ideal use, we also finish your spheres with high-quality optical coatings, depending on the application. asphericon manufactures spheres with diameters from 5 mm to 300 mm and shape accuracies down to the nanometer range, customized to your requirements.

Advantages at a glance

• Customized lenses
• Materials: Glass | Fused Silica | PMMA | Metals | IR materials
• High quality customized coatings (spectral range from 190 nm to 5.1 µm)
• Reasonable delivery times
• RoHS conformity

Looking for spherical lenses?

Link to Hongsheng

Additional reading:
96 Strand Indoor Plenum Rated OM3 Pre-Terminated ...

Specifications spheres

Standard QualityPrecision QualityHigh-End-FinishingDiameter5 &#; 300 mm5 &#; 300 mm5 &#; 300 mmDiameter Tolerance± 0,1 mm± 0,1 mm± 0,01 mmCenter thickness2 > CT < 100 mm2 > CT < 100 mm2 > CT < 100 mmCenter thickness tolerance± 0,1 mm± 0,03 mm± 0,01 mmTolerance of radius± 0,1 %± 0,01 %± 0,01 %Tilt300"30"15"Surface irregularity (fringe)0,80,30,3Surface quality (scratch/dig)60 - - - 10Surface roughness Rq2 nm1,5 nm0,5 nmCoatingcustomer-specificcustomer-specificcustomer-specificMaterialcustomer-specificcustomer-specificcustomer-specificRoHS & REACH Conformitycertifiedcertifiedcertified

Spheres from the technology leader

Product range of spherical optics

Our product range includes the production of the following types of spheres:

• plan-convex/plan-concave lenses
• bi-convex/bi-concave lenses
• achromatic singlets, doublets and triplets

asphericon offers spherical lenses in the following processing stages:

• polished,
• coated
• puttied
• edge-painted
• laser engraved

and in a wide variety of geometries:

• round,
• rectangular,
• with bevels, bores or steps.

More about spherical optics can be found in our company brochure.

Individual spherical lenses

Reference projects

Telescope lenses for high-energy laser PHELIX

For more than 20 years, research has been carried out at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt on the development of a high-power, high-energy laser for fundamental research in the field of high-energy physics. The result is PHELIX (short for Petawatt High Energy Laser for Heavy Ion Experiments), which is used to investigate fundamental processes in plasma physics, astrophysics and atomic physics.

Telescope lenses for high-energy laser PHELIX

Optics for Sentinel-5

For the analysis of atmospheric components such as O3, NO2, SO2, etc., ESA initiated the Sentinel-5 project together with the European Union. A central objective of the missions spectrometer system, which is expected to be deployed on the MetOp-SG A spacecraft from onwards, is the monitoring of trace gas concentrations. asphericon manufactured durable optics for one of the subsystems of Sentinel-5.

Optics for Sentinel-5

Optics for NIORD imager of NorSat-4 satellite

Der NorSat-4 Satellit, entwickelt vom SFL, FFI und Safran Reosc, ist ein wichtiger Schritt zur Verbesserung der maritimen Sicherheit und Früherkennung potenzieller Gefahren. asphericon fertigte sphärische und asphärische Optiken unterschiedlicher Größe für den NIORD-Imager.

Optics for NIORD imager of NorSat-4 satellite

Your request

* Required fields

I acknowledge the data protection declaration.

Speak to our team

Speak to our team

Sales Team Jena

+49 (0) 500

:

:

Always the latest news from asphericon

Accept privacy policy

The company is the world’s best spherical lens supplier supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.