# active shutter 3D system

> technique of displaying stereoscopic 3D images

**Wikidata**: [Q1156879](https://www.wikidata.org/wiki/Q1156879)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Active_shutter_3D_system)  
**Source**: https://4ort.xyz/entity/active-shutter-3d-system

## Summary
The active shutter 3D system is a technique used for displaying stereoscopic 3D images. Classified as a type of computer hardware, it functions by presenting alternate images to each eye to create the illusion of depth. This system is also known by several technical names, including alternate frame sequencing, field sequential, and the eclipse method.

## Key Facts
*   **Classification:** It is categorized as a subclass of computer hardware, defined as the physical components of a computer.
*   **Primary Function:** The system serves as a technique for displaying stereoscopic 3D images.
*   **Aliases:** The technology is known by multiple names, including alternate frame sequencing, alternate image AI, alternating field, field sequential, eclipse method, and Shuttertechnik.
*   **Related Hardware:** Specific historic implementations include the **SegaScope 3-D Glasses** (for the Sega Master System) and the **Famicom 3D System** (an accessory for the Nintendo Family Computer).
*   **Global Reach:** Wikipedia entries for the "Active shutter 3D system" exist in 10 languages, including English, German, French, Korean, and Turkish.
*   **Identifiers:** The entity holds the Freebase ID `/m/05x0nn` and had a Microsoft Academic ID of 165145616.

## FAQs
### Q: What is an active shutter 3D system?
A: An active shutter 3D system is a technique for displaying stereoscopic 3D images. It is classified as a form of computer hardware.

### Q: What are other names for the active shutter 3D system?
A: It is frequently referred to as alternate frame sequencing, field sequential, alternating field, or the eclipse method. In French, it is known as *lunette à obturation LCD*, and in German, as *Shutter-Brille*.

### Q: Which gaming devices used active shutter 3D systems?
A: Historical examples of this technology cited in the knowledge base include the SegaScope 3-D Glasses for the Master System and the Famicom 3D System for the Nintendo Family Computer.

## Why It Matters
The active shutter 3D system represents a significant method within the domain of computer hardware for rendering stereoscopic imagery. By utilizing techniques such as alternate frame sequencing (or the "eclipse method"), this technology enabled the creation of depth perception on flat screens, a feat that standard 2D display components cannot achieve.

Its relevance is historically anchored in the gaming industry, where it was implemented in notable peripherals like the SegaScope 3-D Glasses and the Nintendo Famicom 3D System. These applications demonstrated early consumer adoption of complex 3D visualization hardware in the home. The system's diverse nomenclature—spanning terms like "field sequential" and "Shuttertechnik"—highlights its technical recognition across different global regions and academic contexts. As a subclass of computer hardware, it remains a foundational concept in the evolution of display technology.

## Notable For
*   **Stereoscopic Display:** Being a distinct technique for displaying stereoscopic 3D images.
*   **Hardware Classification:** Being uniquely classified not just as a display method, but specifically as a subclass of computer hardware.
*   **Retro Gaming Integration:** Its specific application in 1980s gaming hardware, such as the SegaScope 3-D Glasses and Famicom 3D System.
*   **Diverse Terminology:** Having a wide range of technical aliases, including "alternate frame sequencing" and "eclipse method."

## Body

### Definition and Classification
The active shutter 3D system is defined as a technique for displaying stereoscopic 3D images. Within the hierarchy of technology, it is classified as a **subclass of computer hardware**. This places it under the broad category of physical components that constitute a computer system.

### Technical Aliases and Terminology
The system is known by a variety of names across different languages and technical contexts.
*   **English Technical Terms:** Alternate frame sequencing, alternate image AI, alternating field, field sequential, eclipse method.
*   **International Terms:**
    *   French: *lunette à obturation LCD*, *lunette a obturation LC*, *lunette obturation LCD*.
    *   German: *Shutter-Brille*, *Shuttertechnik*.

### Related Hardware Implementations
The knowledge base links this system to specific hardware accessories in the video game industry:
*   **SegaScope 3-D Glasses:** A device for the Sega Master System utilizing this technique.
*   **Famicom 3D System:** An accessory class designed for the Nintendo Family Computer.

### Data and Identifiers
*   **Freebase ID:** /m/05x0nn
*   **Microsoft Academic ID:** 165145616 (discontinued service)
*   **Wikipedia Presence:** The entity has a sitelink count of 10 across languages including Azerbaijani (az), Catalan (ca), German (de), English (en), Finnish (fi), French (fr), Italian (it), Korean (ko), Portuguese (pt), and Turkish (tr).

## References

1. Freebase Data Dumps. 2013