High-detection-efficiency stereo microscope system based on a mobile phone

Xinran Guo; Jun Chang; Weilin Chen; Yaoyao Hu; Ning Ma; Jianping Zhang; Jianping Zhang

doi:10.1364/AO.489445

Applied Optics
Vol. 62,
Issue 19,
pp. 5236-5243
(2023)
•https://doi.org/10.1364/AO.489445

High-detection-efficiency stereo microscope system based on a mobile phone

Xinran Guo, Jun Chang, Weilin Chen, Yaoyao Hu, Ning Ma, and Jianping Zhang

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Xinran Guo, Jun Chang, Weilin Chen, Yaoyao Hu, Ning Ma, and Jianping Zhang, "High-detection-efficiency stereo microscope system based on a mobile phone," Appl. Opt. 62, 5236-5243 (2023)

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Table of Contents Category
- Optical Design and Fabrication
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About this Article
History
- Original Manuscript: March 17, 2023
- Revised Manuscript: May 27, 2023
- Manuscript Accepted: May 30, 2023
- Published: June 26, 2023

Abstract

Most stereoscopic microscopes used for industrial component detection are large and have low detection efficiencies. The use of mobile phones as imaging systems (rather than conventional sensors) in industrial fields would make industrial testing more convenient. In this study, an external stereo microscope for mobile phones is designed. The proposed system can resolve details up to 0.01 mm with an 11 mm object field of view, ${-}6.34 \times$ angular magnification, and quantitative 3D feature measurement. The combined system proposed in this paper is suitable for the microscopic observation of industrial components, with its low cost, high detection efficiency, and short installation steps.

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Rear Camera	Resolution	$F$ -Number	Equivalent Focal Length/mm
Wide angle lens	12 MP	1.8	27
$2 \times t e l e p h o t o l e n s$	8 MP	2.4	52
Rear Camera	Shooting Mode	D/mm	Actual Focal Length/mm
Wide angle lens	Standard	1.28	2.3
$2 \times t e l e p h o t o l e n s$	Large aperture	1.79	4.3

Indicators	Value
Wavelength	F, d, C (visible)
Entrance pupil diameter	12 mm
Field of view	11 mm
Angular magnification	$- 6.34 \times$
Resolution	0.01 mm

Serial Number (annotation)	Lens Model
1 (objective)	GCL-010603
2 (eyepiece 1)	GCL-010203
3 (eyepiece 2)	GCL-010169
4 (eyepiece 3)	GCL-010102

Manufacturer	Model Number	Resolution	Optical Magnification	Field of View
Phenix [32]	XTL-165-LCD	0.0125 mm	$0.6 \times$	$8 \times 4.5 {m m}^{2}$
Daheng imaging [26]	TEC-V7X	0.024 mm	$0.5 \times$	$24 \times 24 {m m}^{2}$
Computar [33]	MLM-3XMP	0.0075 mm	$1 \times$	$8.8 \times 6.6 {m m}^{2}$
Proposed system		0.01 mm	$1.5 \times$	$11 \times 11 mm$
Manufacturer	Model Number	Working Distance	Volume	Weight
Phenix [32]	XTL-165-LCD	100 mm	$321 \times 261 \times 550 {m m}^{3}$	–
Daheng imaging [26]	TEC-V7X	182 mm	$61 \times 61 \times 152.86 {m m}^{3}$	1400 g
Computar [33]	MLM-3XMP	90 mm	$36.5 \times 36.5 \times 79.5 {m m}^{3}$	200 g
Proposed system		142 mm	$43 \times 43 \times 150 {mm}^{3}$	50 g

Rear Camera	Resolution	$F$ -Number	Equivalent Focal Length/mm
Wide angle lens	12 MP	1.8	27
$2 \times t e l e p h o t o l e n s$	8 MP	2.4	52
Rear Camera	Shooting Mode	D/mm	Actual Focal Length/mm
Wide angle lens	Standard	1.28	2.3
$2 \times t e l e p h o t o l e n s$	Large aperture	1.79	4.3

Abstract

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Applied Optics