IR optics for optical distance measurement

Infrared distance meters are used for fast and precise distance measurement between two points. The basis is formed by optoelectronic sensors and infrared rays that are invisible to the human eye.

The measurement begins with the continuous emission of an infrared signal by an infrared light emitting diode onto a target object. The emitted IR ray is reflected by the object and the reflection is detected by a special photocell sensitive to infrared rays. The photocell (located next to the IR transmitter), the reflection point and the IR transmitter are arranged triangularly to each other. The determination of the distance can - depending on the measuring device - be divided into two different evaluation methods, based on triangulation or time.

Variant one is based on the principle of triangulation. The light falling back from the reflection point is focused by a lens located in front of the photocell. The result is a focused IR beam whose point of impact on the photodiode gives information about the angle of incidence. The infrared range finder calculates the distance to the object based on the angle of incidence. In this case, the IR evaluation depends on the incident light intensity. This type of infrared distance measurement is used, for example, in national surveying and mapping.

In variant two, the transit time from the emission of the IR signal to the detection of the reflection is determined. By the known distance between sensor and receiver, as well as by the speed of the IR rays stored in the device in combination with the determined time, the distance between the two points can be determined. Fields of application range from hunting to vehicle parking assistance, for example.

Daily applications of infrared optics create ever higher demands on their performance and durability. Consistently good imaging properties as well as a compact and robust design allow optimized use in various areas, such as the automotive industry. Benefit from the efficient and durable IR optics from asphericon. Easily adaptable to your individual requirements, they also withstand mechanical and thermal influences.

We would be happy to advise you on infrared optics for your individual application and look forward to your contact enquiry.

Aspheres
Custom Aspheres
Custom Aspheres
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Custom Aspheres

Looking for a custom solution? Discover our customized aspheres with unsurpassed surface quality.

Custom Aspheres at a gance

  • Customized aspheric optics for UV/VIS/IR range
  • Individual optical designs for for all types of applications
  • Diffraction-limited quality with a Strehl ratio up to 0.99
  • Outstanding surface quality with roughness values as low as 5 Å
  • High-end optical coatings

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Spheres
Spherical Lenses
Spherical Lenses
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Spherical Lenses

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...

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Coating
Filter layers
Filter layers
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Filter layers

For many applications, various wavebands can be separated with filter coatings. We offer short pass and long pass filters based on dielectric coatings...

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Metallic mirrors
Metallic mirrors
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Metallic mirrors

Metallic mirrors provide a constant level of reflection across a very wide wavelength range. The surfaces are based on metals (e.g. Al, Ag or Au). Metallic mirrors can be protected and their reflectivity enhanced by adding dielectric coatings...

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Beam splitter
Beam splitter
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Beam splitter

Coatings for beam splitters divide incoming light into a transmitted and a reflected part. Based on thermally very stable dielectric layers, we realize customer-specific desired splitting ratios, typically 50 % / 50 % (R/T) or 30 % / 70 % (R/T)...

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Mirrors
Parabolic Mirrors
Parabolic Mirrors
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Parabolic Mirrors

Whether you are looking for components for telescopes or measuring technology, asphericon offers complex solutions and the highest precision from a single source. Starting with optical design and the production of your mirrors, asphericon also produce coated elements, such as dielectric mirrors for single wavelengths, two wavelengths and the entire bandwidth as well as  metallic mirror coatings made from aluminum, gold and silver. Learn more about the details...

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Sales Team

+49 (0) 3641 3100 560
sales@asphericon.com