Optical glass eyepiece objective

1. Eyepiece
Definition: A lens or set of lenses at one end near the observer's eye that magnifies the image of the objective to make the final image easy for the human eye to see.
Core Functions:
Magnify the real image formed by the objective lens to further improve the overall magnification;
Correction of aberrations (e.g., chromatic aberration, distortion) and improvement of image quality;
Provide an appropriate exit pupil distance to ensure observation comfort.

2. Application scenarios
Microscope: the real image formed by the magnifying objective, the common magnification is 5×, 10×, 15×, etc.;
Telescope: magnifying the real image of a distant object formed by the objective lens, while adjusting the angle of view to make the image clear;
Measuring instruments (e.g. spectrometers, microscopic eyepieces): used for precise observation and measurement of image details.

1. Objective Lens
Definition: A lens or set of lenses at one end, close to the object being observed, that is a key component in an optical system that determines resolution and image quality

2.Classification by application scenario:
Biological microscope objective: used for the observation of medical and biological samples, chromatic aberration and spherical aberration need to be corrected;
Industrial Objectives: Used for material inspection, semiconductor inspection, emphasizing high resolution and stability;
Astronomical telescope objectives: Large-aperture design for improved light collection, common refractive, reflective or catadioptric structures.