Category — Document Camera & Visualizer
Document Camera / Visualizer — Put Any Page on the Big Screen
A document camera turns anything on the desk — a worksheet, a textbook page, a dissection, a student's exercise book — into a full-screen image the whole room can see. Gaoke's visualizer range covers three documented families: the 9902-series desk visualizers, the portable GAOKEview 9802, and the 9910 with 4K output and optical zoom.
Explore the Range
Application
Document Camera for Classroom
Teaching workflows: show-and-tell, worked examples, live marking.
View page →Portable
Portable Scanner Range
The GK-S6 family and mini scanners for offices that scan on the move.
View page →Product
Portable Document Scanner GK-S6
A3 flatbed-format portable scanning with touch panel and software control.
View page →Three Families for Three Desks
The 9902 series (GK-9901 sold out, GK-9902 and GK-9903 current) is the classic desk visualizer: an 8-megapixel camera on a CCD lens that rotates freely, a negative-film slot in the lens itself for displaying film without switching modes, button operation for long service life, and a large-format bed that scans documents, certificates, materials and real objects at A4 and below. The 9802 (with the GK-9801) is the portable GAOKEview model — CMOS sensor, double-side LED lighting, hidden remote control stored in the machine's side, touch control panel, video recording and the GK software suite for scanning, image processing and PDF conversion; its design is published as a winner of the German Red Dot Award. The 9910 is the high-end unit: a 1/2.8-inch optical zoom lens, 12× optical and 10× digital magnification, resolution of at least 1800 lines, fast autofocus, 4K mode at 30 frames per second or more, and capture formats from business cards up to A3.
Storage and connection follow the same practical pattern: the 9910 stores photos and video to USB disk or TF card up to 128G in MP4 format, and connects directly to a touch screen or projector over HDMI for real-time display; a small-base, bottomless design keeps calligraphy and painting work unobstructed.
Why the Document Camera Survives Every Technology Refresh
Panels and projectors change every few years; paper does not go away. A visualizer is the bridge — the teacher's handwritten working, a printed worksheet, a 3D object — shown live, annotated on the same screen, and compared side by side with digital content using the split-screen comparison the 9910 documents. It is also the cheapest seat in the smart classroom: one camera per room transforms every existing paper resource into teaching content.
Specify by format and by connection: A4-only desks are served by the 9902 and 9802 families; A3 work, science benches and calligraphy need the 9910's format range and zoom. State what you will put under the camera in the enquiry — the recommendation will follow the objects, not the price list.
Specifications & Documented Options
| Models documented | GK-9902 · GK-9903 · GK-9801 · GK-9802 · GK-9910 (4K) |
|---|---|
| Sensor | 8 megapixel HD scan across the documented families |
| Formats | A4 and below (9902/9802) · A6–A3 (9910) |
| Zoom (9910) | 12× optical · 10× digital · ≥1800 lines resolution |
| Output | HDMI direct to touch screen or projector (9910) |
| Storage (9910) | USB disk / TF card up to 128G, MP4 recording |
| Lighting | LED fill light; double-side LED lighting with up to 100,000-hour lamp life (9802) |
Frequently Asked Questions
Which model should a normal classroom buy?
The 9802 portable or the 9902 desk unit cover A4 teaching work. Move to the 9910 when you need A3, optical zoom or 4K output to a large panel.
Can the visualizer record a lesson segment?
Physical-scan video recording is documented on the 9802, and MP4 recording to USB/TF storage on the 9910.
Request a Quote — Document Camera / Visualizer
Tell us what will go under the camera — worksheets, books, artwork or objects — and the screen it will feed. We reply with the matching model and an export quotation.