Title:
照光装置
Document Type and Number:
Japanese Patent JP7217324
Kind Code:
B2
Abstract:
An illumination device including a light source array and a microlens array is provided. The light source array includes a plurality of light sources arranged in an array. The microlens array includes a plurality of microlenses arranged in an array. The illumination device satisfies the following conditional expressions so as to produce structured light: z=z0+dz and z0=(m/2)∗(P2/λ), where z is a distance between the light source array and the microlens array along a central axis of the microlens array, P is a lens pitch of the microlens array, λ is a wavelength of the light sources, m is an integer and m' is a non-integer number. The illumination device satisfies 1% ≦ dz/z0 ≦ 5% or -5%≦dz/z0 ≦-1 %.
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Inventors:
鄭 ▲ユー▼▲チン▼
Application Number:
JP2021157070A
Publication Date:
February 02, 2023
Filing Date:
September 27, 2021
Export Citation:
Assignee:
Himax Technologies, Inc.
International Classes:
G02B3/00
Domestic Patent References:
| JP2018511034A | ||||
| JP2018534592A |
Foreign References:
| WO2017131585A1 | ||||
| WO2020222704A1 |
Attorney, Agent or Firm:
Mitsuharu Kiuchi
Koichi Okuma
Sadanori Katagiri
Kanako Kiuchi
Koichi Okuma
Sadanori Katagiri
Kanako Kiuchi
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