Synchromic prism right Angle prism lens

Light cube color prism rectangular prism lens

An optical instrument is composed of a single or multiple optical components. There are two main types of optical instruments. One is the optical instruments that produce real images, such as slide projectors, cameras, etc. The other is the optical instrument of virtual image, such as telescope, microscope, magnifying glass and so on. With the increasing demand of downstream applications, the market size of optical instrument manufacturing industry has also been expanding in recent years. According to the data of "Production and sales Demand and Forecast analysis report of optical instrument Manufacturing industry", there were 395 enterprises above the scale in China's optical instrument manufacturing industry at the end of 2010. In 2010, the cumulative production of optical instruments was 3008.53 million units, an increase of 25.45%, and an increase of 35.99 percentage points over the same period of the previous year; The sales revenue of the whole industry reached 53.167 billion yuan, up 19.26% year on year. Moreover, errors and deviations become difficult to correct for. [0092] In order to ensure the Xiaoguo of this application, it is preferable to set the upper limit of the conditional expression Qiao to 2.68 or smaller. In order to further ensure that the xiaoguo and Feichang of this application prefers to add the upper limit of conditional expression (5) to 2.25 or small. In order to further ensure the xiaoguo of this application, it is preferable to set the upper limit of conditional expression (5) to 1.83 or smaller. [0093] On the other hand, when the ratio ffVfs is equal to or decreases zhi below the lower * of conditional expression (5), the focal length of the focusing lens group becomes smaller and the position control of the focusing lens group becomes difficult. Accordingly, it becomes difficult to sufficiently ensure the focusing accuracy, and thus the movement is not ideal. Furthermore, it is not ideal to cause spherical aberrations and ZENG errors in the focusing lens set. Moreover, the focal length of the shifted lens group becomes larger, so that the shifted lens group must be shifted W widely to correct the image blur. [0018] The invention makes it possible to provide a zoom lens system of reduced size with excellent optical properties, an optical device equipped with the zoom lens system, and a method for manufacturing the zoom lens system. [0027] FIG. 9 is a cross-sectional view showing the lens configuration of a zoom lens system according to Example 3 of this application. [0028] Figures 10A, 10B, and 10C show the aberrations of the zoom lens system according to Example 3 when focusing at infinity, where Figure 10A is in the wide-angle end state, Figure 10B is in the intermediate focal length state, and Figure 10C is in the telephoto end state.

Light cube color prism rectangular prism lens

Prisms can be divided into several types according to their properties and uses. For example, in the spectral instrument to decompose the composite light into a spectrum of "dispersive prism", is more commonly used is the equilateral prism; Reflecting prisms actually work by the laws of reflection and refraction of light. When light is reflected in the same medium, its reflection Angle and incident Angle are equal; When light incident from one medium to another medium perpendicular to the two medium planes, it will not be refracted. Polarization splitting prism (PBS) is generally made by gluing or photogluing the hypotenuse of two right Angle prisms. A polarization splitting film is plated on the inclined plane, and the P-polarized light in the incident light is transmitted, while the S-polarized light is reflected. All the beam incident surface is generally coated with antireflection film; There are many kinds of roof prism, often used in imaging system, according to customer requirements can provide the roof right Angle prism, roof pentagonal prism, roof diagonal prism and Schmidt prism. Light passing through a prism is generally deflected at a specific Angle (e.g., 90 degrees). Roof prisms are widely used in telescopes, optical systems and rangefinders.