# US 7,412,297 B2 · Method and system for designing and manufacturing lens modules

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- Number: US 7,412,297 B2
- Document ID: US7412297B2
- Status: Granted
- Kind: B2
- Application number: 11/510,627
- Filed: 2006-08-28
- Published: 2007-07-05
- Granted: 2008-08-12
- Earliest claimed: 2005-12-29
- Assignees: Industrial Technology Research Institute
- Inventors: Chir-Weei Chang; Chy-Lin Wang; Wei-Chung Chao
- Web page: https://patentgrep.com/patent/US7412297B2

## CPC

- G02B 27/0012: {Optical design, e.g. procedures, algorithms, optimisation routines}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A method for designing and manufacturing lens modules includes selecting design parameters from a design database stored with the design parameters suitable for a lens module desired to be manufactured to design the lens module according to characteristics of the lens module and storing the design parameters of the lens module in an analysis database, analyzing the lens module based on a predetermined analysis process to generate analysis parameters corresponding to the lens module and storing the generated analysis parameters in the analysis database, and re-designing the lens module based on the analysis parameters stored in the analysis database.

## Claims

### Claim 1

A method for designing and manufacturing a lens module, the method comprising:
selecting design parameters from a design database having a plurality of design parameters in accordance with characteristics of a lens module desired to be designed, designing the lens module according to the selected design parameters, and storing the selected design parameters of the lens module in an analysis database;
analyzing the lens module according to a predetermined analysis process to generate analysis parameters and manufacturing parameters corresponding to the lens module, so as to show quality problems of the lens module due to manufacturing, light engine interface and assembly, and storing the quality problems and the analysis parameters corresponding to the lens module into the analysis database, the predetermined analysis process adopting a tolerance analysis to distribute the design parameters and the manufacture parameters of the lens module and classify optic errors of the lens module into a symmetric part and an asymmetric part; and
re-designing the lens module in accordance with the analysis parameters stored in the analysis database with information obtained after the lens module has been manufactured, so as to adjust precision of the method.

### Claim 2 (depends on 1)

The method of claim 1, wherein the design parameters comprise an optic type, an optic primary specifications and claims of the lens module.

### Claim 3 (depends on 1)

The method of claim 1, wherein the lens module is designed by the use of an auxiliary optic design selection and patent design-around of an expert system.

### Claim 4 (depends on 1)

The method of claim 1, wherein the design parameters are classified into an optic part and a mechanism part.

### Claim 5 (depends on 4)

The method of claim 4 taking the design parameters in both the optic part and the mechanism part into consideration when designing the lens module.

### Claim 6 (depends on 4)

The method of claim 4, wherein the lens module is designed by the use of individual software, or integrated optic and mechanism design software.

### Claim 7 (depends on 1)

The method of claim 1 further storing lens module-related information and the design parameters corresponding to the lens module in a case database when designing the lens module and storing the design parameters of the lens module into the analysis database.

### Claim 8 (depends on 1)

The method of claim 1 further grading assembly capability of the lens module when adopting the tolerance analysis to analyze the lens module.

### Claim 9 (depends on 1)

The method of claim 1 further grading basic optic and mechanism manufacture capability parameters of the lens module when adopting the tolerance analysis to analyze the lens module.

### Claim 10 (depends on 1)

The method of claim 1 further comprising adjusting degrees of freedom of axial direction and lateral direction compensation components of the lens module, so as to decrease the symmetric and asymmetric errors, and optimize a yield rate and reduce a cost of the lens module.

### Claim 11 (depends on 1)

The method of claim 1, wherein the manufacture parameters comprise injection molding, glass molding, grinding and polishing, and mold fabricating-related parameters.

### Claim 12

A computer-readable medium having computer-executable instructions and installed in a system for designing and manufacturing a lens module, the system comprising a design database, a design module coupled to the design database, an analysis module and an analysis database, the analysis module comprising an error mode effect analysis unit, the design database comprising a plurality of design parameters, the computer-executable instructions, when executed, performing:
actuating the design module to select from the design database design parameters suitable for the lens module according to characteristics of the lens module, to design the lens module;
actuating the analysis module to analyze the lens module designed by the design module in accordance with a predetermined analysis process, and generate analysis parameters and manufacturing parameters corresponding to the lens module, so as to show quality problems of the lens module due to manufacturing, light engine interface and assembly, the predetermined analysis process adopting a tolerance analysis to distribute the design parameters and the manufacture parameters of the lens module;
actuating the error mode effect analysis unit to classify optic errors of the lens module into a symmetric part and an asymmetric part;
storing the design parameters, the analysis parameters and the quality problems analyzed by the analysis module in the analysis database; and
actuating the design module to further re-design the lens module in accordance with the analysis parameters stored in the analysis database with information obtained after the lens module has been manufactured, so as to adjust precision of the system.

### Claim 13 (depends on 12)

The computer-readable medium of claim 12, wherein the design parameters comprise an optic type, an optic primary specifications and claims of the lens module.

### Claim 14 (depends on 12)

The computer-readable medium of claim 12, wherein the design module designs the lens module through the use of an auxiliary optic design selection and patent design-around of an expert system.

### Claim 15 (depends on 12)

The computer-readable medium of claim 12, wherein the design parameters are classified into an optic part and a mechanism part, and the design module comprises an optic design unit and a mechanism design unit for selecting, in accordance with the characteristics of the lens module, the design parameters in the optic part and the mechanism part suitable for the lens module, to design an optic part and a mechanism part of the lens module respectively.

### Claim 16 (depends on 15)

The computer-readable medium of claim 15, wherein the design module takes the design parameters in both the optic part and the mechanism part into consideration when designing the lens module.

### Claim 17 (depends on 15)

The computer-readable medium of claim 15, wherein the lens module adopts individual software, or integrated optic and mechanism design software to design the lens module.

### Claim 18 (depends on 12)

The computer-readable medium of claim 12 further comprising a case database for storing lens module-related information and the design parameters corresponding to the lens module after the design module has designed the lens module.

### Claim 19 (depends on 12)

The computer-readable medium of claim 12, wherein the analysis module further generates manufacturing parameters corresponding to the lens module when analyzing the lens module according to the predetermined analysis process.

### Claim 20 (depends on 19)

The computer-readable medium of claim 19, wherein the analysis module comprises a manufacturability unit for analyzing the lens module in accordance with the predetermined analysis process, and generates the analysis parameters of the lens module.

### Claim 21 (depends on 20)

The computer-readable medium of claim 20, wherein the manufacturability unit further grades assembly capability of the lens module when analyzing the lens module.

### Claim 22 (depends on 20)

The computer-readable medium of claim 20, wherein the error mode effect analysis unit further grades basic optic and mechanism manufacture capability parameters of the lens module.

### Claim 23 (depends on 12)

The computer-readable medium of claim 12, wherein the error mode effect analysis unit further adjusts degrees of freedom of axial direction and lateral direction compensation components of the lens module, so as to decrease the symmetric and asymmetric errors, and optimize a yield rate and reduce a cost of the lens module.