JH-5 5M LED children Children logarithmic visual acuity chart

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Product Abstract:

Size:92*28*2.5cm

Product Description

Features:
1)Children standard logarithmic light boxes adopt kinds of items which are familiar by children.It's vivid.
2)It's suitable for children which are below 7 years old.
3)It's necessary for ophthalmology in hospital,maternity and child care,kindergarten.
4)The box is made of pure aluminum alloy thicken plank
5)Showing board is made of extra thick PVC board.Not easy to be broken,without a glance, not dazzling.
6)Appearance using the latest version of ultra-thin design.
7)Illuminance of light source is uniform,error of UDLR is no more than 20%.

Specification:
1)Product size:92028025mm(LWH)
2)Standard measurement vision range: 4.0~5.3
3)Produced accroding international stand GB11533-89.
4)Brightness is 120~300cd/m²,uniform and without a glance.
5)With protection angles.