| 開發人員: | Behzad Gorimar (4) | ||
| 價錢: | 免費 | ||
| 排名: | 0 | ||
| 評測: | 0 寫評論 | ||
| 清單: | 0 + 0 | ||
| 點數: | 0 + 0 ¡ | ||
| App Store | |||
描述
With the introduction of the ADA (Americans with Disabilities Act) and DDA (Australian Disability Discrimination Act), it is useful for Architects, Interior Designers, Disability Access Consultants and even product manufacturers to quickly calculate the required LRV contrast of adjoining materials.
Light / Luminance Reflectance Value, or LRV, is a measurement of light that is reflected from a surface. Some of the ways to find the LRV are by means of a colorimeter, spectrophotometer or directly by the manufacturer (for example, LRV noted on a fan deck provided by a paint manufacturer).
LRV / Luminance Contrast is the light reflected from one surface as compared to the light reflected from another surface. This app calculates the percentage difference required when the LRV of any two samples are know. For example, if you have the LRV of the color of the door frame and the LRV of the color of the door, you can use this calculator to determine the contrast in % based on the formulas used in either USA or Australia.
The Americans with Disability Act Accessibility Guidelines (ADAAG) recommends a 70% LRV or higher for those with impaired vision and Australian / New Zealand Standard AS/NZ 1428.4.1-2009 requires LRV contrast in a range of 30% to 60% based on the type of building elements.
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- Behzad Gorimar
- 平台: iOS 應用程式 (4)
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其他資訊
- 版本: 1.1.2
- ID: com.bezapps.lrv
- 類別 :
iOS 應用程式›公用程式與工具 - OS:
Apple Watch,iPad,iPhone,iOS 8.0 以上版本 - 大小:
3 Mb - 支援的語言 :
English - 內容分級:
4+ - App Store 評分:
0 - 發佈日期:
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