A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode
In this paper, a large-capacity white light source module using a high-power blue laser diode and a reflective spaced phosphor was designed. The reflective spacing phosphor ensured thermal stability. The proposed white light module is a reflective phosphor structure with a bi-directional optical sys...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/3/760 |
| _version_ | 1797624743678967808 |
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| author | Seung-Min Lee Joon-Ho Cho Wan-Bum Lee |
| author_facet | Seung-Min Lee Joon-Ho Cho Wan-Bum Lee |
| author_sort | Seung-Min Lee |
| collection | DOAJ |
| description | In this paper, a large-capacity white light source module using a high-power blue laser diode and a reflective spaced phosphor was designed. The reflective spacing phosphor ensured thermal stability. The proposed white light module is a reflective phosphor structure with a bi-directional optical system based on a rhombus prism lens. The rhombus prism optical system can greatly narrow the blue laser beam width and a long-wavelength band-pass filter of 500 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>nm</mi></mrow></semantics></math></inline-formula> or more is applied to change the movement path of the laser beam and transmit white light excited by the phosphor. A dichroic filter was applied to the fold mirror part and a planar convex lens was designed to focus the blue laser beam so that the phosphor was irradiated. Finally, a high-power white light source is obtained from the pre-optics unit to which the dichroic filter is applied. In order to use the proposed white light source as a searchlight, a divergence angle of 4° or less is required. For this implementation, a large-area collimating lens combining an aspheric condensing lens and an achromatic lens was applied. It was confirmed that the divergence angle of 4 degrees or less was satisfied at the focal length (FL) of 38.5 to 42.5 mm of the optical lens of the laser white light module emitter and the collimating optical system. |
| first_indexed | 2024-03-11T09:46:51Z |
| format | Article |
| id | doaj.art-4eaaa04e2632475a997b06cd3d894b84 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T09:46:51Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-4eaaa04e2632475a997b06cd3d894b842023-11-16T16:31:06ZengMDPI AGElectronics2079-92922023-02-0112376010.3390/electronics12030760A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser DiodeSeung-Min Lee0Joon-Ho Cho1Wan-Bum Lee2Goodi-Tech Co., Ltd., 26, Yongyeon-gil, Iksan-si 54531, JeonBuk, Republic of KoreaDepartment of Electronics Convergence Engineering, Wonkwang University, 460 Iksandae-ro, Iksan-si 54538, JeonBuk, Republic of KoreaDepartment of Computer Software Engineering, Wonkwang University, 460 Iksandae-ro, Iksan-si 54538, JeonBuk, Republic of KoreaIn this paper, a large-capacity white light source module using a high-power blue laser diode and a reflective spaced phosphor was designed. The reflective spacing phosphor ensured thermal stability. The proposed white light module is a reflective phosphor structure with a bi-directional optical system based on a rhombus prism lens. The rhombus prism optical system can greatly narrow the blue laser beam width and a long-wavelength band-pass filter of 500 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>nm</mi></mrow></semantics></math></inline-formula> or more is applied to change the movement path of the laser beam and transmit white light excited by the phosphor. A dichroic filter was applied to the fold mirror part and a planar convex lens was designed to focus the blue laser beam so that the phosphor was irradiated. Finally, a high-power white light source is obtained from the pre-optics unit to which the dichroic filter is applied. In order to use the proposed white light source as a searchlight, a divergence angle of 4° or less is required. For this implementation, a large-area collimating lens combining an aspheric condensing lens and an achromatic lens was applied. It was confirmed that the divergence angle of 4 degrees or less was satisfied at the focal length (FL) of 38.5 to 42.5 mm of the optical lens of the laser white light module emitter and the collimating optical system.https://www.mdpi.com/2079-9292/12/3/760blue laser dioderemote phosphorwhite moduleoptical design |
| spellingShingle | Seung-Min Lee Joon-Ho Cho Wan-Bum Lee A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode Electronics blue laser diode remote phosphor white module optical design |
| title | A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode |
| title_full | A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode |
| title_fullStr | A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode |
| title_full_unstemmed | A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode |
| title_short | A Study on the Development of a White Light Source Module for a Large-Capacity Searchlight Using a Blue Laser Diode |
| title_sort | study on the development of a white light source module for a large capacity searchlight using a blue laser diode |
| topic | blue laser diode remote phosphor white module optical design |
| url | https://www.mdpi.com/2079-9292/12/3/760 |
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