optical unit
A technology for optical units and light-emitting elements, which is applied in the direction of light sources, semiconductor devices of light-emitting elements, light source fixing, etc.
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no. 1 Embodiment approach
[0060] In the scanning optical system using the rotary mirror 26, if the diffusion (scanning) range is expanded, the maximum light decrease, the deterioration of the imaging property can occur. Therefore, the actual scan range is about ± 10 ° relative to the optical axis (central axis). The above-described lamp unit 20 forms a remote light distribution pattern using one light source, and therefore there is a limit when expanding the scan range. Therefore, in the optical unit according to each of the following embodiments, a plurality of light sources are provided in order to expand the irradiation of the light-raising pattern of the high-dimension.
[0061] Figure 4 The schematic view of the optical unit 40 according to the first embodiment is observed from above. Figure 5 Is observed from side Figure 4 A schematic diagram of the optical unit 40 shown. Figure 6 Whether it is observed from front Figure 4 A schematic diagram of the optical unit 40 shown.
[0062] The optical u...
no. 2 Embodiment approach
[0073] Figure 9 It is a schematic diagram of the optical unit 60 according to the second embodiment. Figure 10 Is observed from side Figure 9 The illustrated optical unit 60 is shown. Figure 11 Whether it is observed from front Figure 9 The illustrated optical unit 60 is shown. Further, the same structure as the optical unit according to the first embodiment, the same reference numerals are labeled, and the description is omitted.
[0074] The optical unit 60 according to the second embodiment includes a first light source 42; a second light source 48; a rotary mirror 44, while reflecting the first light L1 emitted from the first light source 42, while rotating the shaft R The center rotation; the projection lens 46, which will projection from the first light L1 reflected by the rotary mirror 44 to the light irradiation direction of the optical unit 60; and the heat sink 62, which is mounted on the first light source 42 and the second light source 48. The second light source...
no. 3 Embodiment approach
[0078] Figure 12 It is a schematic view of the optical unit 80 according to the third embodiment to be observed from above. Figure 13 Is observed from side Figure 12 The schematic diagram of the optical unit 80 shown. Figure 14 Whether it is observed from front Figure 12 The schematic diagram of the optical unit 80 shown. Further, the same configuration as the optical unit according to the first embodiment and the second embodiment, the same reference numerals are labeled, and the description is omitted.
[0079] The optical unit 80 according to the third embodiment has: a first light source 42; a rotary mirror 44, while reflecting the first light L1 emitted from the first light source 42, rotating by a rotating shaft; projection lens 46 It is projected from the first light L1 reflected by the rotary mirror 44 to the light irradiation direction of the optical unit 80; the second light source 48 is disposed between the first light source 42 and the projection lens 46; and a f...
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