Premiere Plans Give Flatter Fields

Premiere Plans Give Flatter Fields

Professional Level Veterinary Microscopes

If you’re a frequent user demanding a high level of performance of your laboratory microscope, ‘Planar’ or ‘Plan’ Objective Lenses give you a clear image that’s in focus at the edges as well as in the centre.

How Your Microscope Works

Microscopes work by deflecting the path of light rays to make objects look many times larger – up to a 1000 times larger – than life. In modern laboratory microscopes, controllable light is provided by the built-in tungsten filament, halogen or LED light source, focussed onto the sample through the substage condenser.

Light passes through the sample or slide mounted on the microscope’s movable stage. Double-layer stages allow the operator to move the sample around in very small increments while vernier calibrated scales let the operator record the position of important findings and locate them again.

Plan Objectives on a Microscope Nosepiece

Bending The Light Fantastic

Light passing through the sample enters the microscope tube at the objective lens. In the pioneer days of microscopes, the objective was a single convex lens resembling a highly polished bead of glass. A single lens will deflect light rays sufficient to effectively magnify the image, but also introduces a number of other unhelpful distortions or ‘aberrations’.

The image created by the objective lens is further magnified by the eyepiece lenses and focussed onto the retina of the operator’s eye. A binocular microscope or ‘stereo-microscope’ allows the operator to view the sample with both eyes.

Relieving Operator Fatigue and Reducing Laboratory Error

One of the most annoying and difficult to correct objective lens aberrations is the loss of ‘flat field’ or ‘planar image distortion’. Uncorrected, an objective lens will create a curved rather than flat image on the retina of the operator’s eye.

This means that while the centre of a sample might be in sharp focus, the edges of the image will be fuzzy and blurred requiring the operator to continually refocus within each field of view in, for instance, a stained blood-smear slide. Constant refocusing can cause operator fatigue, eye strain and inefficient use of laboratory time and even introduce errors.

Planar or Plan Objective Lenses adjust correctly the paths of light rays passing through them to create a flat image that’s in focus at the edges as well as in the centre, reducing eye-strain and operator fatigue.

Choosing Plan Objective Premiere Microscope

Vetlab Supplies’ Premiere 1600 and Premiere 2000 veterinary microscopes feature Infinity Plan Objective Lenses. The benefit of a Plan Objective is perhaps most noticeable when taking photo-micrographs using the trinocular photographic head. These professional quality microscopes also exploit the advances of Revolutionary Infinity Optics, holding the light rays from the objective parallel – as if focussed on infinity – to form a clearer, sharper image in the eye or in a digital camera.

For more information about our great range of microscopes visit our website at www.vetlabsupplies.co.uk or Telephone: 01798 874567

COVID-19 Update

As the impact of COVID-19, is being felt around the world, the well-being of our employees and their families is of the highest importance to us.

By putting the safety of our employees first, we have reduced our on-site staff to a minimum and we will endeavour to maintain our business operations to the highest standard possible.

We are carefully monitoring and following official guidance from the UK Government, Public Health England, WHO and CDC guidelines and in line with these; we are currently operating business as usual.

We are monitoring our stock levels on a daily basis ensuring a fair distribution of our products. We are fully committed to maintaining the supply of products during these unprecedented times.

We are open for orders from Monday through to Thursday and closing on Fridays:

Friday Closure:  For any technical queries, orders or enquiries please do one of the following:
• Email: info@vetlabsupplies.co.uk.
• Fax: 01798 874787
• Telephone & leave a message: 01798 874567

We will endeavour to contact you on Friday and Monday if it is non-urgent.

If you require any further information, please contact Vetlab Supplies Ltd Customer Services on 01798 874567 or email info@vetlabsupplies.co.uk.

Thank you to all our customers and suppliers for their support during these temporary measures.

Stay Safe