Light control device and lighting device
JPWO2025126624A1Pending Publication Date: 2025-06-19
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Patent Information
- Application Number
- JP2025563284
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Priority Date
- 2023-12-15
- Filing Date
- 2024-10-01
- Publication Date
- 2025-06-19
AI Technical Summary
Technical Problem
Existing optical control devices, such as vehicle headlamps, require high accuracy in adjusting the polarization direction and member dimensions, making it difficult to easily switch the illumination range.
Method used
The optical control device includes a liquid crystal element with a first and second region, where the liquid crystal element transmits and emits light along different directions based on applied potentials, and a lens that diffuses and emits the light, allowing for easy switching of the illumination range.
Benefits of technology
This solution enables easy and efficient switching of the illumination range by controlling the light emission direction through the liquid crystal element and lens, improving the flexibility and accuracy of light control.
✦ Generated by Eureka AI based on patent content.
Abstract
A light control device 30 includes a liquid crystal element 40 that transmits and emits incident light L2 incident along a first direction D1, and a second lens 70 on which an emission light L3 of the liquid crystal element 40 is incident. A first region A1 of the liquid crystal element 40 emits the emission light L3 along the first direction D1 when a potential is not applied and emits the emission light L3 along a second direction D2, which is different from the first direction D1, when the potential is applied. A second region A2 of the liquid crystal element 40 emits the emission light L3 along the first direction D1. The second lens 70 has a reflection surface 72 that totally reflects the emission light L3 that is incident along the first direction D1 along a third direction D3 toward a second emission surface 73 and refracts and emits the emission light L3 that is incident along the second direction D2 along a fourth direction D4 away from the second emission surface 73.
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