Youke Electric Light Source Biological Microscope

　　Youke Electric Light Source Biological MicroscopeFeatures:

This is a well-designed, compact, and lightweight biological microscope. Suitable for research experiments in disciplines such as biology, bacteriology, and medicinal chemistry.

instrument parameters

Tube: Three eyes

Spotlight and Barrier: Abbe Spotlight Variable Barrier and Color Filter

Eyepieces: Wide angle eyepiece WF10X, Huygens eyepiece H16X

Achromatic objective lens: 4X, 10X, 40X (S), 100X (S)

Lighting: LED light source or halogen lamp

Power supply: electric light source

　　Youke Electric Light Source Biological MicroscopePrinciples of Optics

1. Refraction and refractive index of light rays propagate in a straight line between two points in a homogeneous isotropic medium. When passing through transparent objects with different densities, refraction occurs due to the different propagation speeds of light in different media. When light rays that are not perpendicular to the surface of a transparent object (such as glass) enter the transparent object from air, the direction of the light ray changes at its interface and forms a refractive angle with the normal.

2. The performance of lenses: Lenses are the most basic optical components that make up the optical system of microscopes, and components such as objective lenses, eyepieces, and focusing lenses are all composed of single or multiple lenses. According to their different shapes, they can be divided into two categories: convex lenses (positive lenses) and concave lenses (negative lenses). When a beam of light parallel to the optical axis passes through a convex lens and intersects at a point, this point is called the 'focal point', and the plane passing through the intersection and perpendicular to the optical axis is called the 'focal plane'. There are two focal points, the focal point in the object space is called the 'object focal point', and the focal plane at that point is called the 'object focal plane'; On the contrary, at the focal point of the image square space, it is called the 'image square focal point', and the focal plane at that point is called the 'image square focal plane'. After passing through a concave lens, light forms an upright virtual image, while a convex lens forms an upright real image. Real images can be displayed on the screen, while virtual images cannot.

3. The key factor affecting imaging - aberration. Due to objective conditions, no optical system can generate theoretically ideal images, and the existence of various aberrations affects imaging quality. Below are brief introductions to various aberrations.