Bảng thị lực tốt nhất 

Bảng thị lực LED  D-220

Sản xuất: Trung Quốc

Tính Nẵng

- Với những tính năng 3D độc đáo

- Với khoảng cách đo từ 1 mét đến 6 mét, thích hợp cho mọi không gian

- đủ các Landolt biểu đồ đa dạng hiển thị A,C,E, biểu đồ Alphabet, đồ trẻ em, biểu đồ số, Astigmatic optotypes, cross optotypes, Binocular balance optotypes, Ishihara optotypes, and so on 

- Lắp đặt nhanh chóng và dễ sử dụng

- Nhập khẩu và phân phối và bảo hành chính hãng nhanh chóng

•Big size monitor, clear display 22" TFT-LED monitor,1920x1080 pixels, 250CD/m²

•3D polarization vision chart Apply to binocular balance test and stereo visual function test

•Optotypes can be changed randomly

•Result-speaking function When the patient answers with direction keys on the controller,the system will show the result by voice.

1. Unique intelligent function: Customer uses direction keys on the controller to answer instrument according to his/her judgment

of the optotypes randomly appeared on the screen, system automatically speaks out the best value of eyesight.

2. Screen brightness can be adjusted to be fit for the environment. The maximal screen brightness is 250cd/m² according to national

standard.

3. Delicate design, high definition display: This instrument is designed with professional video and audio multimedia processing

technology, with rapid response and convenient operation.

4. With Protecting function to ensure long life of the screen.

5. Compatible with multifold types of video and audio files.

6. Accurate and exact, effective distance is 1~6m, can be adjust to the minimum distance (1m) for crowded area.

7. With the maximum 3 lines and 8 rows of optotypes showing on screen, convenient for test.

8. Numerous option of optotypes: Landolt chart(C), Tumbling chart (E), Alphabet chart, children chart, numeric chart,

Astigmatic optotypes, cross optotypes, Binocular balance optotypes, Ishihara optotypes, and so on. 3D-type instrument is designed

with stereo polarization specially used for examine of stereo vision and binocular balance.

9. Convenient and quick installation: simply hang or place on solid surface, easy to maintenance.

10. LCD screen with the minimum 0.248mm of dot pitch and high resolution, vivid to display optotypes.

11. Powerful extended function: instrument can be used as a computer display, or as a multimedia player with U disc.

12. Allows to connect with AV or YPbPr signal;

THÔNG SỐ KỸ THUẬT

LED 22-inch TFT Panel, 1920x1080 pixels, 250CD/m²

Optotype……E(Tumbling), C(Landolt),Alphabet, Numbers, Children

Visual unit…....................................................Decimal(0.05~2.0)

Distance…………………………………....…1M~6M (in steps of 0.5m)

Mask type…...............Single mask, Horizontal mask, Vertical mask,

Red/Green mask, White/Black mask,

Contrast adjustment, Red/Green adjustment

Special test masks…………..........…Ishihara Test, Cross cylinder,

Astigmatism Test, Cross Grid,

Fixation point Test, Red/Green Panel,

Worth Test, Red/Green Balance,

Traffic light, Coincidence Test,

Stereo Test, Schober Test, ETDRS

Other functions….........Ramdomization Optotypes Playing function,

R/G setting function, Video playing function,

Screen-saver function, standby function