Optical Element Mark for Position Posture Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical elements with multiple surfaces face challenges in achieving precise adjustment of position and posture, which is crucial for optimal optical performance but is difficult to achieve with current detection methods.
Innovation Solution
The optical element incorporates a main surface with a mark, such as a recess or protrusion, extending in the longitudinal direction, allowing for precise adjustment by analyzing the optical image of reflection light from these marks using an image sensor, enabling accurate detection of positional and postural deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection methods are used for optical elements with multiple surfaces, then the detection process becomes complex and time-consuming, but the measurement precision and adjustment accuracy remain insufficient
Solution Approach 1:
The mark structure serves multiple functions: it acts as both a positioning reference and a posture reference. The same mark configuration enables detection of both positional deviations (in the X, Y, and Z directions) and postural deviations (rotations and tilts), eliminating the need for separate detection systems for position and posture.
Solution Approach 2:
The invention extends the mark from a simple point or line to a two-dimensional pattern with specific geometric features (longitudinal direction and short-side direction). This dimensional extension allows the mark to encode information about both position and posture simultaneously, enabling comprehensive adjustment information to be obtained from a single detection process.
2Productivity
If conventional marks are used for adjustment detection, then the adjustment process is time-consuming, but the productivity remains low due to multiple detection steps
Solution Approach 1:
The invention merges the position detection function and posture detection function into a single integrated detection process. By using a unified mark structure that contains both positional and postural information, the system can determine both position and posture deviations simultaneously from one optical image, eliminating the need for sequential detection steps.
Solution Approach 2:
The mark is pre-configured with specific geometric features (extending in the longitudinal direction with defined short-side dimensions) during the optical element manufacturing process. This preliminary configuration ensures that the mark inherently contains all necessary information for both position and posture detection, eliminating the need for additional measurement or calculation steps during the adjustment process.
3Manufacturing precision
If high-precision adjustment is achieved through multiple detection marks, then the manufacturing complexity increases, but the manufacturing precision remains difficult to achieve
Solution Approach 1:
The invention applies the mark only in specific local regions of the optical element surface where it is most effective for detection. The mark is positioned and oriented to optimize its ability to provide adjustment information, rather than requiring complex markings across the entire optical element. This localized approach simplifies the manufacturing process while maintaining high precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables high-precision adjustment of the optical element's position and posture, improving the optical performance by accurately detecting and correcting deviations in the X, Y, and Z axes, as well as rotations and tilts, thereby enhancing the overall performance of optical devices.
Implementation Method 1
analyzing the optical image of reflection light from these marks using an image sensor
Data Source
AI summary
An optical element includes a plurality of optical surfaces. At least one of the plurality of optical surfaces includes a main surface extending in a longitudinal direction and a short-side direction, and a mark including a recess portion or a protrusion portion, the mark extending in the longitudinal direction of the main surface.