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:920*280*25mm(L*W*H) | |||||||
| 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. |
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