Lucent Help & Support
Contact
- Email: norvynzhang@gmail.com
Lucent 没有账号系统。反馈入口只打开你主动发起的邮件草稿，不会自动发送或附加诊断文件。若描述某次读数，请说明当时的光线和使用场景；不需要发送个人记录或其他身份资料。发送前请自行检查邮件内容。
Frequently Asked Questions
Why does Lucent need camera access?
Lucent 根据后置相机的曝光数据估计环境光。它不拍照、不录像、不保存图像，相机画面只在设备本地实时处理。
新的环境光读数只在实时页可见，或你主动记录当前环境时采集；屏幕对比另有前台相机采集。计时页、锁屏实时活动和后台不会持续测光。
不授予相机权限时仍可使用固定基线计时；记录当前环境需要本次取得的有效读数。
Does Lucent connect to the internet?
核心测光、计时、历史记录和 CSV 导出在本机完成，不需要 Lucent 服务器或账号。
你主动打开支持、隐私或其他外部链接时，由系统浏览器连接对应网站；主动发送反馈邮件时，由邮件服务传输邮件。这些外部操作需要相应网络连接，Lucent 不会自动发送邮件或上传诊断资料。
Why are there gaps in my history?
Lucent 只在实时页可见，或主动记录当前环境时获取环境光读数。切到计时页、锁屏或进入后台后不会持续测光；屏幕对比的前台采集也不代表连续环境光记录。记录中的空白就是未采样的时段。
We deliberately do not interpolate. Made-up data is worse than a gap.
Why is my reading different from my light meter?
Lucent is not a light meter. It provides a camera-based estimate designed to be relatively stable and repeatable, not absolutely precise.
Why does the break interval change?
建议间隔结合最新取得的有效环境光读数、基线和模型设置计算；光线不合适时建议更短。计时页不会持续测光，因此环境改变后，需要返回实时页取得新读数。建议值与当前一段计时的已配置时长应分别看待。
| Illuminance | Assessment | Interval |
|---|---|---|
| < 30 lux | Too dark | 8 min |
| 30–120 lux | Dim | 13 min |
| 120–900 lux | Suitable for reading | 20 min |
| 900–3000 lux | Bright | 16 min |
| > 3000 lux | Too bright | 10 min |
These values use a 20-minute baseline. You can set the baseline to 10–30 minutes in Settings; all five bands scale proportionally, keeping their relative intervals. “Child” uses a shorter factor, and “Night” a longer one.
This is Lucent’s own suggested model, inspired by 20-20-20 and adjusted for illuminance. It is not a medical standard.
Why does the reading not keep switching near a boundary?
Band changes use hysteresis: the reading must cross 12% above a boundary to move up, and fall below 11% to move down. It will not keep switching when a reading sits near a boundary. This is deliberate.
One detail: changing a lamp’s color temperature without changing its brightness can also change the illuminance reading. In that case, Lucent says the light’s color changed; it does not say the environment became darker or brighter.
Why does Lucent not show a “comfort score”?
Because the device cannot produce an honest value for one. Percentage confidence, ISO readings, a 0–100 comfort score, and absolute screen brightness were all deliberately removed. We would rather show fewer numbers than invent one.
Why does the screen check show only a ratio?
This method cannot honestly measure the absolute brightness of a self-emissive screen. Lucent shows the ratio between the screen and its surroundings instead.
What if Focus mode silences a break reminder?
检查系统通知权限、专注模式允许的通知，以及设置中的「休息提醒穿透专注」。该选项与「跟随专注模式」独立，实际通知投递仍受 iOS 设置影响。
专注筛选器按配置开始或暂停计时，不会在后台或计时页启动持续相机监测。
Without notification permission, the timer still works from its fixed baseline; it simply will not send reminders.
What does “Device not supported” mean?
相机采集或所需的曝光数据当前不可用。请按 App 提示检查相机权限、镜头遮挡及运行状态后再试。固定基线计时仍可使用；没有本次有效读数时，不会保存伪造的环境光打点。
Can I export my records?
能。设置里有「导出记录」，导出 CSV，列是 kind,start,end,duration_s,lux,band,scene。文件通过系统分享面板交给你，由你决定是否分享及分享给谁；Lucent 不会自动发送。
Unmeasured periods appear as no rows in the CSV; they are not filled with zeroes.
How do I delete my data?
Deleting the app deletes all data, including samples, manual marks, and preferences. The current version has no in-app “Clear All Records” option.
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