Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Device and method for measuring modulation transfer function of large-numerical aperture micro objective

A technology of modulating transfer function and microscope objective lens, which is applied in the direction of testing optical performance, etc., to achieve the effect of convenient use, wide working band, and good function expansibility.

Inactive Publication Date: 2011-10-05
SUZHOU UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using this instrument to measure large numerical aperture microscopic objectives, there is also the problem that a relay lens with a larger numerical aperture needs to be used

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for measuring modulation transfer function of large-numerical aperture micro objective
  • Device and method for measuring modulation transfer function of large-numerical aperture micro objective
  • Device and method for measuring modulation transfer function of large-numerical aperture micro objective

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See attached figure 1 , it is the structural representation of the large numerical aperture microscopic objective lens modulation transfer function measuring device that the present embodiment provides, and this device comprises: collimating objective lens 1, target generator 2, image analyzer 11 and control and data processing system (computer) 14.

[0031] The target generator 2 is used to provide a specific imaging target for the test of the modulation transfer function of the microscope objective lens, which includes a target 3 , a chopper 4 , a filter 5 and an illumination source 6 . Wherein the target 3 is a slit target, which is placed at the focal point of the collimating objective lens 1 for simulating a target located at infinity. The illumination light source 6 is used to illuminate the target, and the output wavelength of the target generator can be changed by changing different filters. The chopper is used to modulate the optical radiation signal emitted ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a technology for measuring the modulation transfer function of an optical system, in particular to a device and method for measuring the modulation transfer function of a large-numerical aperture micro objective. An image analyzer (11) of the device comprises a scanning knife edge (8), a scanning controller (9), an integrating sphere (10), a semiconductor photoelectric detector (12) and a phase-locking amplifier (13), wherein the scanning knife edge (8) is installed in front of the opening of the integrating sphere (10); the scanning controller (9) receives control signals sent by a control and data processing system (14) to drive the knife edge to move; and the semiconductor photoelectric detector (12) is installed on the inner wall of the integrating sphere (10), and current signals output by the semiconductor photoelectric detector (12) are processed by the phase-locking amplifier (13) and then input to the control and data processing system (14). The device has the advantages of simple structure, good function expansibility, wide working waveband and convenient use and can also be used for measuring the modulation transfer function of the optical system.

Description

technical field [0001] The invention relates to a technology for measuring the modulation transfer function of an optical system, in particular to a device and method for measuring the modulation transfer function of a large numerical aperture microscopic objective lens. Background technique [0002] Microscopic measuring instruments are an important means for people to understand the microscopic world. With the continuous development of science and technology, people have higher and higher requirements for the resolving power of microscopic measuring instruments. For the optical microscope system, in order to improve the resolving power, it is necessary to design and develop a microscope objective lens with a large numerical aperture (N.A.>0.7). However, the design of large numerical aperture microscopic objectives is difficult and requires high processing and assembly precision. Therefore, in order to ensure the performance of the final product, it is necessary to quant...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 陈新华陈宇恒周建康相春昌范纪铭季轶群沈为民
Owner SUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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