of less than 1 minute of arc, then their visual acuity will be 1. If the person being tested has a visual acuity of only 0.5, then the test symbol displayed must be doubled in size in order for it to be [...] When our visual acuity decreases In order to see objects clearly, the incoming light must be focused on the retina. The better this process works, the sharper our vision - and we are then able to distinguish [...] focused on the retina. Reduced visual acuity Visual acuity is influenced by a wide variety of factors, which are determined not only by the eye itself but also environmental influences. The interaction of
86 x 54 x 6 mm.Replacement battery: Order No. 15471, requires 2 batteries.Display and Optoform equipement available.Product AccessoriesReplacement battery: Order No. 15471, requires 2 batteries.  [...] out of its case.The LED light does not require changing. The tiny, extremely bright LED light used by Eschenbach Optik has a service life which is virtually unlimited.Product PropertiesDiffractive aspheric [...] needed2 Magnifiying glasses Adjustment distance (aE)400 mmObject cutting width (s)55 mmDistance Eye - Lens (e)250 mm Dimensions Dimensions54 x 86 x 6 mm Lens properties magnifiying glasses Lens geometr
86 x 54 x 6 mm.Replacement battery: Order No. 15471, requires 2 batteries.Display and Optoform equipement available.Product AccessoriesReplacement battery: Order No. 15471, requires 2 batteries.  [...] out of its case.The LED light does not require changing. The tiny, extremely bright LED light used by Eschenbach Optik has a service life which is virtually unlimited.Product PropertiesDiffractive aspheric [...] typeCR 2025 Magnifiying glasses Adjustment distance (aE)400 mmObject cutting width (s)46 mmDistance Eye - Lens (e)200 mm Dimensions Dimensions54 x 86 x 6 mm Lens properties magnifiying glasses Lens geometr
86 x 54 x 6 mm.Replacement battery: Order No. 15471, requires 2 batteries.Display and Optoform equipement available.Product AccessoriesReplacement battery: Order No. 15471, requires 2 batteries.  [...] out of its case.The LED light does not require changing. The tiny, extremely bright LED light used by Eschenbach Optik has a service life which is virtually unlimited.Product PropertiesDiffractive aspheric [...] needed2 Magnifiying glasses Adjustment distance (aE)400 mmObject cutting width (s)55 mmDistance Eye - Lens (e)250 mm Dimensions Dimensions54 x 86 x 6 mm Lens properties magnifiying glasses Lens geometr
provided by 36 long-life high performance LEDs with primary lens system for optimal concentration of light and shadow and flicker-free working.Approx. 5000 lx (at a 20 cm working distance) – provides full [...] AccessoriesTable Base Order-No. 27729Cast iron, 260 mm Ø, weight 6 kg.Suitable for stand magnifier 27771.Technical data Lens properties Lens SizeØ 132 mm Optical Properties Magnification1.9 xDioptre3.55 dp
provided by 36 long-life high performance LEDs with primary lens system for optimal concentration of light and shadow and flicker-free working.Approx. 5000 lx (at a 20 cm working distance) – provides full [...] AccessoriesTable Base Order-No. 27729Cast iron, 260 mm Ø, weight 6 kg.Suitable for stand magnifier 27771.Technical data Lens properties Lens SizeØ 132 mm Optical Properties Magnification1.9 xDioptre3.55 dp
provided by 36 long-life high performance LEDs with primary lens system for optimal concentration of light and shadow and flicker-free working.Approx. 5000 lx (at a 20 cm working distance) – provides full [...] 3 m.Supplied with table clamp for table top thicknesses of 18-74 mm.Product AccessoriesTable Base Order-No. 27729Cast iron, 260 mm Ø, weight 6 kg.Suitable for stand magnifier 27771.Technical data Lens [...] properties magnifiying glasses Lens SizeØ 132 mm Operating unit (magnifying glasses) Magnification1.9 xDioptre3.55 dptMaterialsmanual_varioLED.pdf2.6 MBProduct overview
provided by 36 long-life high performance LEDs with primary lens system for optimal concentration of light and shadow and flicker-free working.Approx. 5000 lx (at a 20 cm working distance) – provides full [...] 3 m.Supplied with table clamp for table top thicknesses of 18-74 mm.Product AccessoriesTable Base Order-No. 27729Cast iron, 260 mm Ø, weight 6 kg.Suitable for stand magnifier 27771.Materialsmanual_varioLED [...] oLED.pdf2.6 MBVariantsNameproduct codeDioptre Magnification Lens Size varioLED+277733.55 dpt1.9 x Ø 132 mm varioLED+277766 dpt2.5 x Ø 132 mm Product overview
from your optician on finding the best solution for your requirements and needs - you can also discover the products we offer by following the link. Good illumination reduces the magnification requirement [...] our visual acuity decreases, magnifying vision aids are able to compensate for the impaired vision by magnifying the images on the retina. Before a suitable magnifying vision aid can be selected, it is [...] is necessary to find out what the magnification requirement is. In general, this is determined by the ratio between the visual acuity required for a vision task and the remaining visual acuity of the person
lighting can be switched off (per LED group) several LEDs (glare-free)Camera - typeAF - Autofocus (manual focusing)Camera - positioningnatural orientation central position (glare-free)User inputfunction [...] t PropertiesReflection-free 22” LCD TFT displayPin sharp, true colour image in full HD resolution1.6x – 100x magnification with a smooth zoom responseFull HD camera with 12x optical zoomFast autofocus [...] workingInstallationpositioned standing upErgonomicScreen height adjustment Basic properties Magnification1.6 – 100 xDisplay TechnologyTFT-LCD, reflexionsfreiScreen size/diagonal in cm54.6 cmScreen size/diagonal
