Imagineer Academy College, Smart Glasses
智能眼鏡需在放在人頭模上測試嗎？
Nov
智能眼鏡的 as-worn positioning test（佩戴定位測試），是指在真實佩戴狀態下，驗證眼鏡的光學中心、顯示投射位置、鏡片傾角、前傾角（Pantoscopic tilt）、鼻托位置等是否與設計預期一致，以及是否能穩定維持在正確位置。
這項測試對 AR型智能眼鏡（如Xreal、Viture、Meta Ray-Ban Display等）尤其關鍵，因為哪怕偏移 1-2mm 或傾角偏差 2-3度，就可能導致：
- AR疊加偏移（虛擬物件漂移、鬼影、雙影）
- 顯示視野變小或看不完整
- 長時間佩戴頭痛、暈眩、眼睛疲勞
- 瞳距/瞳高不對 → 立體感變差或完全看不清
傳統普通眼鏡偏差主要影響視力清晰度，但智能眼鏡（尤其是帶顯示器的AR/MR款）是 「光學+顯示+感測器」的系統，佩戴穩定性直接決定體驗品質。業界常見的痛點就是「戴上去畫面歪了/偏了/看不全」，所以各大廠都把這項測試列為出廠關鍵項目。
常見的重要測試要求與標準
以下是目前業界最常見的 as-worn positioning 測試重點與合格門檻（參考ISO相關眼鏡標準）：
| 測試項目 | 主要目的 |
|---|---|
| 光學中心偏移 (Optical center shift) | 確保瞳孔與顯示投射中心對齊 |
| 前傾角（Pantoscopic tilt） | 鏡片/顯示器與臉部垂直面的夾角 |
| 鏡框傾斜角 / 鏡面傾斜 | 左右鏡片是否水平、避免歪斜 |
| 鼻托/鼻樑壓力分佈 | 避免滑落或壓鼻過重 |
| 鏡腿開合/夾持力 | 確保穩固但不夾頭過痛 |
| 瞳距適配範圍 | 是否適合亞洲人/歐美人的常見窄瞳距 |
As-worn positioning 測試的核心目標，是確保智能眼鏡 「戴上去立刻對、戴久了也不歪」。這項測試不僅關乎舒適度，更決定了產品究竟是 「酷炫玩具」 還是 「能天天戴的生產力工具」。隨著技術發展，佩戴穩定性已成為衡量智能眼鏡成熟度與實用性的關鍵指標之一。
The Importance of Smart Glasses “As-Worn Positioning” Testing
The as-worn positioning test (also known as wear position validation) refers to verifying whether key parameters of smart glasses—such as optical center alignment, display projection position, lens tilt angle, pantoscopic tilt, and nose pad placement—remain consistent with design specifications and stay correctly positioned during actual wear. This test is especially critical for AR-type smart glasses (like Xreal, Viture, Meta Ray-Ban Display), as even minor deviations of 1–2 mm or tilt errors of 2–3 degrees can cause:
- AR overlay misalignment (virtual object drift, ghosting, double imaging)
- Reduced or incomplete display field of view
- Headaches, dizziness, or eye strain during prolonged wear
- Incorrect pupillary distance/height → poor stereoscopic effect or blurred vision
Why is “As-Worn Positioning” So Important
Traditional eyeglasses mainly affect visual clarity when misaligned, but smart glasses (especially AR/MR models with displays) integrate optical, display, and sensor systems. Wear stability directly determines user experience quality. A common industry pain point is users putting on glasses only to find “the display is crooked/shifted/incomplete,” which is why leading manufacturers now treat this test as a critical factory checkpoint.
Key Testing Requirements and Standards
Below are the most common as-worn positioning test criteria and acceptance thresholds in the industry (referencing ISO standard):
| Test Parameter | Primary Purpose |
|---|---|
| Optical Center Shift | Ensure pupil alignment with display projection center |
| Pantoscopic Tilt | Angle between lens/display and facial vertical plane |
| Frame/Lens Tilt | Ensure horizontal alignment, prevent skew |
| Nose Pad Pressure Distribution | Prevent slippage or excessive pressure |
| Temple Clamping Force | Ensure stability without excessive pressure |
| PD Adjustment Range | Accommodate narrower Asian / Euopean / American PD ranges |
The core goal of as-worn positioning testing is to ensure smart glasses “fit correctly from the moment you put them on and stay aligned during extended wear.” This test goes beyond comfort—it determines whether a product remains a “cool gadget” or becomes a “daily wearable productivity tool.” As the industry matures, wear stability has emerged as a key indicator of smart glasses’ practicality and readiness for mainstream adoption.
