Title:
レンズ体及び車両用灯具
Document Type and Number:
Japanese Patent JP7441104
Kind Code:
B2
Abstract:
To provide a lens body and the like capable of shortening a lateral width without deteriorating light utilization efficiency.SOLUTION: A lens body 30 includes a tabular lens body 40. The tabular lens body 40 includes a first main surface 41, a second main surface 42, an incident part 44, first to fifth total reflection surfaces R1-R5, and a light emission part 43. The first main surface 41 includes the incident part 44. The second main surface 42 includes the first to third total reflection surfaces R1-R3. A rear end part of the tabular lens body 40 includes the fourth total reflection surface R4 and the fifth total reflection surface R5. The first total reflection surface R1 totally reflects the light from a light source 20 toward a central region A1 of the light emission part 43. The fourth total reflection surface R4 totally reflects the reflection light from the second total reflection surface R2 toward one end region A2 in the longer direction of the light emission part 43. A first standing wall part 46 formed between the first total reflection surface R1 and the second total reflection surface R2 is inclined so as not to shield the light totally reflected from the fourth total reflection surface R4 toward the one end region A2.SELECTED DRAWING: Figure 2
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Inventors:
Keio Saito
Application Number:
JP2020067298A
Publication Date:
February 29, 2024
Filing Date:
April 03, 2020
Export Citation:
Assignee:
Stanley Electric Co., Ltd.
International Classes:
F21S43/239; F21S43/243; F21S43/251; F21V5/00; F21V5/04; F21V8/00; G02B3/08; G02B5/04
Domestic Patent References:
| JP2015185304A | ||||
| JP2012174658A |
Foreign References:
| US20200041716 | ||||
| FR2966224A1 | ||||
| US20180356582 |
Attorney, Agent or Firm:
Ken Ieiri