Optical sensor and manufacturing method
JP2024115504A5Active Publication Date: 2025-02-07DENSO CORP
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Patent Information
- Application Number
- JP2023151638
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-02-14
- Filing Date
- 2023-09-19
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2043-09-19
AI Technical Summary
Technical Problem
Existing optical sensors face challenges in achieving precise alignment of the optical axis due to manufacturing tolerances, such as inclinations within and between modules, limiting the accuracy of optical axis adjustment.
Method used
The optical sensor employs a method of adjusting the optical axis by deviating the optical center of the light source and detection modules in specific directions relative to the lens modules, using a three-dimensional coordinate system and positioning shims to align the optical axes, thereby absorbing manufacturing tolerances.
Benefits of technology
This approach ensures high precision in adjusting the projection and reception optical axes, overcoming manufacturing tolerances and maintaining accurate alignment.
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Abstract
To provide an optical sensor that secures the accuracy of adjustment of an optical axis.SOLUTION: An optical sensor comprises: a light projection light source module 22 that has a light projection position face 222 and projects a light projection bream Bp from a light-emitting face 226; a light projection lens module 26 that has a light projection bonded face 264 bonded to the light projection light source module 22 and guides the light projection beam Bp from the light projection light source module 22 to the outside along a light projection optical axis Op; and a sensor base 14 that determines the position of the light projection position face 222 along a Y-axis and has a light projection base face 142. When a light projection adjustment direction Dp orthogonal to an X-axis is assumed to run along the light projection adhesive face 264, an optical center Cp of the light-emitting face 226 in the light projection light source module 22 deviates in the light projection adjustment direction Dp with respect to a main point Pp of the light projection lens module 26, and thereby the light projection optical axis Op on an XY plane orthogonal to the light projection base face 142 is adjusted.SELECTED DRAWING: Figure 7
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