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Máy thử thị lực

Máy thử thị lực TW-800A

06/01/2011 20:48

Wenzhou Dongwu-TQ

Chart Projector

TW-800A Chart Projector

Specifications
Projection distance:1.8—6m
Projection magnification:30×(in 5m refraction)
Projection Size:250×250mm,300mm(in 5m refraction)
Numbers of charts:30
Chart change-over:1 frame/0.2sec
Numbers of masks: open 1, horizontal line 5, vertical line 6, single isolation 16, r and g1
Tilt range: 10º horizontally as well as vertically
Projection lamp:12v 30w(halogen lamp)
Automatic shut-off mechanism:
5 minutes
Electricity:AC 110 or 220v 50/60hz DC 12v
Power consumption: 60VA
Dimension:196(w)×292(L)×234(h)mm
Weight:7.2kg

TW-650A/TW-660A/TW-670A Auto Chart Projector

The projector is a precision optical instrument for accurate refraction. It provides 30 different charts and 35 masks, with programmable remote control, Duochrome test charts to check single and binocular vision, and polarized test charts to check binoclular vision and ocular muscle imbalance.

Specifications：
Projection distance:1.5m ~ 6m
Projection magnification:30 x (at 5m)
Projection size:330mm(W) x270mm(H) (at 5m)
Chart:30 different pattern
Speed of chart conversion:One chart per 0.03s
Mask:1 open, 5 horizontal lines,8 vertical lines, 21 single letters, 1 red/green
speed of mask conversion:One mask per 0.03s
Program:2 sets programs, each program contains up to 30 steps
Light source:12V,50W Halogen Lamp
Auto-off function:After 10 minutes idle time.
Power source:AC 220V ,50Hz or 110V, 60Hz
Power consumption:80W
Dimensions:300mm(L) x 230mm(W) x 240mm(H)
Net weight:6Kg
Accessories: Remote control, Polarized metal screen, halogen lamp, polarized glasses, fuses(2), batteries(2)
Optional accessories:Floor stand, wall stand