Multi-axis optical projector
Patent 5278632 Issued on January 11, 1994. Estimated Expiration Date: 
June 11, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 11, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2574119 Apparatus for inspecting both sides of tape or sheet Patent #: 5061074 InventorAssigneeApplicationNo. 896812 filed on 06/11/1992US Classes:356/612, By specular reflection356/388, BY CONFIGURATION COMPARISON356/390With two images of single article comparedExaminersPrimary: Evans, F. L.Attorney, Agent or FirmForeign Patent References
International ClassG01B 011/24AbstractA multi-axis optical projector comprises an optical yoke having two spaced-apart primary objective lenses and optical paths for transmitting either backlight or front light from light sources to a target object disposed between the primary objective lenses and from the target object to a secondary objective lens focussing on an eyepiece which may be a video camera. The projector is used, for example in a tool presetting or tool measuring system, for viewing of a specimen, such as a cutting tool, to measure tool profile and to identify tool surface defects such as cracks, chips, wear patterns and coating abnormalities. | |
