Focal length measurement method for concave lens
A measurement method and technology of concave lens, applied in the direction of testing optical performance, etc., can solve the problems of poor measurement accuracy and cumbersome measurement process, and achieve the effects of simple operation, improved measurement accuracy and simple structure
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0015] like Figure 1~3 As shown, a measurement method for measuring the focal length of a concave lens includes a sodium lamp, a light shield, a first convex lens, a grating, a second convex lens, a third convex lens, a concave lens to be tested and a micrometer eyepiece, and a rectangular light hole is arranged on the light shield , the measurement includes the following steps: (1) Along the incident direction of light, there are coaxial sodium lamps, shading plates, first convex lens, grating, third convex lens and micrometer eyepiece arranged in sequence, turn on the sodium lamp, and the light from the sodium lamp passes through the rectangular The light-through hole is incident on the first convex lens, passes through the first convex lens to form a beam of parallel light, and then the parallel light is vertically incident on the grating, diffracted by the grating, and then the diffracted light converges on the focal plane B of the third convex lens through the third conve...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com