Cambridge University Hospitals NHS Foundation Trust Hills Road, Cambridge CB2 0QQ

Infrared lensmaterial

Our experienced engineers and consultants can help you determine the best substrate and antireflective or reflective coating best fits your application. Every situation is unique, and we can help you find a cost effective solution that meets your need. Whether you need special resistance to mechanical and thermal shock, or good performance in rugged environments, we can select the perfect substrate for you.  We can also help design your IR lens or optical lens assembly. From basic lens selection (singlet, aspherical lens, spheric lens, cylindrical lens, custom shape lens) to design of aspheric lenses arranged in a complex opto-mechanical device, or any other infrared optical assembly, we have you covered.

Avantier can provide lenses in chalcogenide material. Chalcogenide is an amorphous glass and is easier to process than traditional IR crystalline materials.

Infraredlenses for photography

Our extensive experience in infrared optics enables us to both design and produce the highest quality lenses and assemblies for IR light. State of the art metrology and a robust quality control program means that every lens with the Avantier name on it will perform exactly as intended, and we check and double check that each component meets your full specification. Our manufacturing processes meet all applicable ISO and MIL standards, and our IR lenses are well known throughout the world.

A specialist allied healthcare professional will guide you through the appointment and the medical photographer or photography support will explain the scanning procedure.

Infrared lensfor iPhone

(Leave a message with your name, date of birth and hospital number, and a brief description of your concern, and one of the nurses will call you back.)

InfraredcameralensCanon

Help accessing this information in other formats is available. You can find out more about this service on our patient information help page.

The OCT scan provides the ophthalmologist with a high resolution, cross-sectional image of the ocular tissues at the back of the eye. This information enables the ophthalmologist to evaluate the eye in order to make management and treatment decisions.

Although you consent to this treatment, you may at any time after that, withdraw such consent. Please discuss this with your medical team.

The hospital has received a referral from your Optician, your GP or the diabetic screening program asking for further investigations of your eye. A retinal photograph and OCT (see below for information) has been requested to further investigate the conditions mentioned in the referral. The photograph and OCT scan will quickly allow the clinician reviewing your virtual clinic encounter to assess the back of your eye and decide if you need any treatment and if/when you need to be seen again.

Bestinfraredlenses

On arrival, you will have your vision checked. Please bring your current glasses, or any contact lenses you may wear to use in this test.

We also use this clinic to see follow up patients where we have determined that a virtual clinic is suitable for their clinical needs.

Optical coherence tomography (OCT) is a non-invasive imaging test, a lot like a photograph, which is widely used in the field of ophthalmology. It is used for the diagnosis and ongoing treatment of several ophthalmic conditions.

The scanning technique uses light waves to achieve high resolution pictures which the ophthalmologist can review at a later date.

This will depend on the outcome of the OCT scan. If the OCT scan and photos cannot fully diagnose the condition or if it shows significant abnormalities, you will normally be called for another appointment in between one and four weeks’ time. If not, you will be seen more routinely. If no abnormality is detected, you may be discharged. You will be notified of the outcome by letter most of the time. You may receive a telephone call from the booking team or the ophthalmology clinical team.

IRlensfor phone

VIETNAM:Alpha Industrial Park, Tu ThonVillage, Yen My District, HungYen Province 17721+84 221-730-8668sales-vn@avantierinc.com

Available at: https://www.macularsociety.org/age-related-macular-degeneration (opens in a new tab) [accessed 02.10.2020]

Infrared lensglasses

Chalcogenide glass is an ideal material for both high performance infrared imaging systems and high volume commercial applications. Chalcogenide glass is available in a variety of chemical composition options, but BD6, composed of arsenic and selenium (As 40 Se 60), is the best choice in terms of cost and ease of production. Chalcogenide infrared glass materials and lenses are also an excellent alternative to expensive, commodity price-driven materials such as Ge, ZnSe, and ZnS2. Chalcogenide glass primarily transmits in the MWIR and LWIR wavelength bands, making it suitable for infrared imaging applications.

Your Optician, GP or diabetic eye screening service has seen changes or suspects changes in the retina at the back of the eye or we are following up things already seen on the retina. This diagram shows the basic structure of the eye and where the retina is in the eye.

A clinician will review the OCT scan following the virtual OCT clinic. The consultant may want other ophthalmic tests done, to define the diagnosis, which will be performed at another appointment. The clinician will make a clinical decision for the next stage of your clinical pathway, for example treatment or a future review, and you will receive notification of this by letter or telephone.

Infrared lensfilter

You are advised not to drive to your appointment as you may have dilating drops, which are required to obtain the best scan possible.

OCT imaging can be particularly useful in detecting and monitoring multiple macula conditions such as age-related macular degeneration and diabetic macular oedema. This technology allows us to explore treatment options more efficiently and effectively.

Smoking is not allowed anywhere on the hospital campus. For advice and support in quitting, contact your GP or the free NHS stop smoking helpline on 0800 169 0 169.

The substrate chosen for a lens will depend partly on which IR region it is designed for. For instance, Calcium Fluoride  (CaF2) lenses are a good choice for radiation between 80 nm – 8 μm and so would be ideal for NIR SWIR wavelengths. Zinc Selenide has optimal transmission from 8 – 12μm, although it offers partial transmission over 0.45 μm to 21.5 μm  and  Zinc Sulfide (good transmission in 8-12µm,  or partial transmission from 0.35 to 14µm).

Infrared light is classified as light between the wavelengths of 1 mm to about 700 nm. Infrared IR radiation can be further divided into several categories:

An IR lens is an optical lens designed to collimate, focus, or collect infrared light. At Avantier Inc., we produce high performance IR Optics such as IR lenses for use with near-infrared (NIR), short-wave infrared (SWIR), mid-wave infrared (MIR), and long-wave infrared (LWIR) spectra. These Infrared lenses can be customized for specific areas of the infrared spectrum, and are suitable for applications in defense, life science, medical, research, security, surveillance and other industries.

Help accessing this information in other formats is available. To find out more about the services we provide, please visit our patient information help page (see link below) or telephone 01223 256998. www.cuh.nhs.uk/contact-us/accessible-information/

Whether you require one-off production of single infrared (IR) lens assembly for a specialized research project or a large quantity of fixed-focus IR lenses for industry use, you need to know you can count on your provider. When you work with Avantier, you know you are getting the best product possible, at the best possible price. Our engineers design for manufacturability and work hard to ensure you get an optimized product at an optimal price and within an optimal time frame. That’s because we’ve done it, again and again.

The organisations below can provide more information and support for you. Please note that Addenbrooke’s Hospital is not responsible for the quality or accuracy of any information or advice provided by these organisations:

Blausen.com staff (2014). "Medical gallery of Blausen Medical 2014 (opens in a new tab)". WikiJournal of Medicine 1 (2). DOI (opens in a new tab):10.15347/wjm/2014.010 (opens in a new tab). ISSN (opens in a new tab) 2002-4436 (opens in a new tab).

Same sex bays and bathrooms are offered in all wards except critical care and theatre recovery areas where the use of high-tech equipment and/or specialist one-to-one care is required.