Optical Glass Eyepiece & Objective

Eyepiece

1.Definition: A lens or group of lenses positioned near the observer's eye that magnifies the image formed by the objective, making the final image comfortable for the human eye to view.

2.Core Functions:

• Magnify the real image formed by the objective to increase overall magnification

• Correct aberrations (e.g., chromatic aberration and distortion) to improve image quality

• Provide appropriate eye relief for comfortable observation

Applications:

• Microscopes: Magnify the real image formed by the objective; common magnifications include 5×, 10×, and 15×.

• Telescopes: Magnify the real image of distant objects formed by the objective while adjusting the field of view for a clear image.

• Measuring instruments (e.g., spectrometers, measuring eyepieces): Used for precise observation and measurement of image details.

Objective Lens

Definition: A lens or group of lenses positioned closest to the object being observed. It is a key component of an optical system, determining resolution and image quality.

Classification by Application:

• Biological microscope objectives: Used for observing medical and biological samples, with correction for chromatic and spherical aberration.

• Industrial objectives: Designed for material and semiconductor inspection, emphasizing high resolution and stability.

• Astronomical telescope objectives: Feature a large-aperture design for improved light collection, with common configurations including refractive, reflective, and catadioptric structures.