CN209748681U - A dual-light zoom optical device applied to a monitoring system - Google Patents

Abstract

the utility model discloses a be applied to two optical zoom optical devices of monitored control system, including optical lens one group, two groups of optical lens and beam split module, wherein one bunch of light wave ejection direction is equipped with first diaphragm, three groups of optical lens, four groups of optical lens and first sensitization chip, and another bunch of light wave ejection direction is equipped with second diaphragm, five groups of optical lens, six groups of optical lens and second sensitization chip; the optical device further comprises an image processing system; the optical lens group is a fixed lens group and comprises a first lens, wherein the focal power of the first lens is negative, the focal power of the second lens is positive, and the focal power of the third lens is positive. The utility model discloses a beam split module separates the light of different wavelengths, and then different wavelength range light waves are received by the sensitization chip of difference respectively again to make the definition of sensitization chip have the promotion, make the whole picture definition that optical device formed at last promote greatly.

Description

A dual-light zoom optical device applied to a monitoring system

【Technical field】

The utility model relates to a dual-light shooting system, in particular to a dual-light zoom optical device applied to a monitoring system.

【Background technique】

At present, monitoring and shooting systems are widely used in people's daily life. But present security monitoring, traffic monitoring system have following shortcoming:

1. The existing shooting system uses a single lens to match a single photosensitive chip. The wavelength of light that needs to be received by a single photosensitive chip is relatively wide. Therefore, the overall picture definition is not high, and the shooting effect is not good;

2. The existing shooting system uses a single lens to match a single photosensitive chip, reflecting that the wavelengths of each color are not well restored on a single photosensitive chip, resulting in the phenomenon that the color of the shooting picture is not full enough;

3. The existing shooting system uses a single lens to match a single photosensitive chip. In a low-light environment, some wavelengths of light waves cannot be used, resulting in a decrease in the overall light flux and unclear images;

In order to solve the above-mentioned existing problems, the utility model makes beneficial improvements.

【Content of utility model】

The purpose of this utility model is to address the deficiencies in the prior art, and propose a dual-light zoom optical device applied to a monitoring system, using a light splitting module, which divides the light waves transmitted by the optical lens into several light waves of different wavelength ranges. Light waves in different wavelength ranges can be received by different photosensitive chips, and the graphics processing module finally integrates and outputs the light waves received by different photosensitive chips, so as to achieve high-definition images, and the image color reproduction is good. Can image clearly.

In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a dual-light zoom optical device applied to a monitoring system, characterized in that it includes one group of optical lenses, two groups of optical lenses, and the ability to pass through the second group of optical lenses The light wave is divided into two light-splitting modules with different ranges of wavelengths, one of which is equipped with a first diaphragm, three groups of optical lenses, four groups of optical lenses, and the first photosensitive chip in the direction of emission of the light wave, and the emission direction of the other light wave is set. The second diaphragm, five groups of optical lenses, six groups of optical lenses and the second photosensitive chip; the optical device also includes an image processing system capable of integrating and outputting light waves received by the first photosensitive chip and the second photosensitive chip; The optical lens group is a fixed lens group, including a first lens, the refractive power of the first lens is negative, a second lens, the refractive power of the second lens is positive, and the first lens and the second lens are adhesive Combined lens, the third lens, the focal power of the third lens is positive.

The above-mentioned dual-light zoom optical device applied to a monitoring system is characterized in that the light-splitting module is at least one light-splitting element.

A double-light zoom optical device applied to a monitoring system as described above is characterized in that the second group of optical lenses is a moving lens group, including a fourth lens, the fourth lens has a negative refractive power, and the fourth lens has a negative refractive power. The fifth lens has a negative refractive power; the sixth lens has a positive refractive power, and the fifth lens and the sixth lens are cemented lenses.

A dual-light zoom optical device applied to a monitoring system as described above is characterized in that the three groups of optical lenses are fixed lens groups, including a seventh lens, and the seventh lens is an aspherical lens; the eighth lens , the refractive power of the eighth lens is positive; the ninth lens, the refractive power of the ninth lens is negative, and the eighth lens and the ninth lens are cemented lenses.

A dual-light zoom optical device applied to a monitoring system as described above is characterized in that the four groups of optical lenses are moving lens groups, including a tenth lens, the refractive power of the tenth lens is positive, and the fourth Eleven lenses, the focal power of the eleventh lens is positive, the twelfth lens, the focal power of the twelfth lens is negative, the eleventh lens and the twelfth lens are cemented lenses, the thirteenth lens, The focal power of the thirteenth lens is positive, and the fourteenth lens is an aspherical lens.

A dual-light zoom optical device applied to a monitoring system as described above is characterized in that the five groups of optical lenses are fixed lens groups, including a fifteenth lens, and the refractive power of the fifteenth lens is positive , the sixteenth lens, the focal power of the sixteenth lens is negative, the seventeenth lens, the refractive power of the seventeenth lens is positive, the eighteenth lens, the eighteenth lens is an aspheric lens.

A double-light zoom optical device applied to a monitoring system as described above is characterized in that the six groups of optical lenses are moving lens groups, including a nineteenth lens, and the focal power of the nineteenth lens is positive , the twentieth lens, the focal power of the twentieth lens is negative, the nineteenth lens and the twentieth lens are cemented lenses, the twenty-first lens, and the focal power of the twenty-first lens is positive.

A dual-light zoom optical device applied to a monitoring system as described above is characterized in that the shape of the aspheric surface of the aspheric lens satisfies the following equation:

In the formula, the parameter c is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as that of the lens length, and k is the coefficient of the conic conic curve; when the k coefficient is less than -1, the surface curve of the lens is a hyperbola , when the coefficient k is equal to -1, the surface curve of the lens is a parabola; when the coefficient k is between -1 and 0, the surface curve of the lens is an ellipse; when the coefficient k is equal to 0, the surface curve of the lens is a circle, and when the k coefficient is greater than 0, the surface curve of the lens is oblate; a ₁ to a ₈ respectively represent the coefficients corresponding to each radial coordinate.

Compared with the prior art, a dual-light zoom optical device applied to a monitoring system of the present invention has the following beneficial effects:

1. The utility model uses a splitting module to separate light of different wavelengths, so the light waves output from the splitting module are light waves in two different wavelength ranges, and these two light waves in different wavelength ranges are respectively received by different photosensitive chips. Therefore, Each individual photosensitive chip receives a section of light waves with a relatively narrow wavelength range, so that the definition of the photosensitive chip will be improved, and the definition of the entire picture finally formed by the optical device will be greatly improved.

2. The utility model uses a splitting module to separate light of different wavelengths, so the light waves output from the splitting module are light waves in two different wavelength ranges, and these light waves in different wavelength ranges are respectively received by different photosensitive chips. Therefore, the two The wavelength range of the overall light waves received by the photosensitive chips is relatively wide after accumulation, and the wavelengths reflecting each color can be fully utilized.

3. The utility model uses a splitting module to separate light of different wavelengths, so the light waves output from the splitting module are light waves in two different wavelength ranges, and these light waves in different wavelength ranges are respectively received by different photosensitive chips. Therefore, at low When the illumination is high, the two photosensitive chips that receive light waves in different wavelength ranges are added together, so that the wavelength range of light waves that can be used is widened, and the overall light flux is improved, so that the imaging picture can be clear even when the light is very dark.

【Description of drawings】

Fig. 1 is the optical diagram of the utility model.

【Detailed ways】

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

As shown in Figure 1, a dual-light zoom optical device applied to a monitoring system includes a group of optical lenses G1, a second group of optical lenses G2, and a device that can divide the light waves passing through the second group of optical lenses G2 into two different ranges of wavelengths Spectroscopic module M7, wherein a first light stop 801, three optical lens groups G3, four optical lens groups G4 and a first photosensitive chip 901 are set in the outgoing direction of one beam of light waves, and a second light stop is set in the outgoing direction of the other light wave 802, five groups of optical lenses G5, six groups of optical lenses G6 and the second photosensitive chip 902; the diaphragm can adjust the number of light beams entering the lens; the optical device also includes the first photosensitive chip 901, the second photosensitive chip 902 The image processing system M10 that integrates and outputs the received light waves; the optical lens group G1 is a fixed lens group, including a first lens 101, the refractive power of the first lens 101 is negative, the second lens 102, the second The refractive power of the lens 102 is positive, the first lens 101 and the second lens 102 are cemented lenses, and the third lens 103, the refractive power of the third lens 103 is positive.

As shown in FIG. 1 , in this embodiment, the light splitting module M7 is at least one light splitting element.

Using the splitting module M7 and matching two photosensitive chips 901 and 902 that receive light waves in different wavelength ranges, the light emitted by the optical lens groups G1 and G2 is divided into two light waves in different wavelength ranges by the splitting module M7, and then passed through the optical lens group G1 and G2. Different photosensitive chips 901 and photosensitive chips 902 matched by the spectroscopic module M7 respectively receive light waves in a specific wavelength range, and finally realize image restoration and reproduction through the image processing module M10, thereby improving the clarity of the optical system, increasing color reproduction, and realizing The shooting system can also image clearly in low-light environments.

As shown in Figure 1, in this embodiment, the second optical lens group G2 is a moving lens group, including a fourth lens 201, the refractive power of the fourth lens 201 is negative, the fifth lens 202, the fifth The refractive power of the lens 202 is negative; the sixth lens 203, the refractive power of the sixth lens 203 is positive, and the fifth lens 202 and the sixth lens 203 are cemented lenses.

As shown in Figure 1, in this embodiment, the three optical lens groups G3 are fixed lens groups, including the seventh lens 301, the seventh lens 301 is an aspheric lens; the eighth lens 302, the eighth lens 302 The refractive power of the ninth lens 303 and the ninth lens 303 are negative, and the eighth lens 302 and the ninth lens 303 are cemented lenses.

As shown in Figure 1, in this embodiment, the four groups of optical lenses G4 are moving lens groups, including a tenth lens 401, the refractive power of the tenth lens 401 is positive, the eleventh lens 402, and the tenth lens 402 The refractive power of the eleventh lens 402 is positive, the refractive power of the twelfth lens 403 and the twelfth lens 403 is negative, the eleventh lens 402 and the twelfth lens 403 are cemented lenses, and the thirteenth lens 404 , the refractive power of the thirteenth lens 404 is positive, the fourteenth lens 405, and the fourteenth lens 405 is an aspheric lens.

As shown in Figure 1, in this embodiment, the five optical lens groups G5 are fixed lens groups, including the fifteenth lens 501, the refractive power of the fifteenth lens 501 is positive, and the sixteenth lens 502 , the refractive power of the sixteenth lens 502 is negative, the refractive power of the seventeenth lens 503 and the seventeenth lens 503 is positive, and the eighteenth lens 504 and the eighteenth lens 504 are aspheric lenses.

As shown in Figure 1, in this embodiment, the six optical lens groups G6 are moving lens groups, including the nineteenth lens 601, the refractive power of the nineteenth lens 601 is positive, and the twentieth lens 602 , the refractive power of the twentieth lens 602 is negative, the nineteenth lens 601 and the twentieth lens 602 are cemented lenses, the twenty-first lens 603, and the refractive power of the twenty-first lens 603 are positive.

As shown in Figure 1, in this embodiment, the shape of the aspheric surface of the aspheric lens satisfies the following equation:

In the formula, the parameter c is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as that of the lens length, and k is the coefficient of the conic conic curve; when the k coefficient is less than -1, the surface curve of the lens is a hyperbola , when the coefficient k is equal to -1, the surface curve of the lens is a parabola; when the coefficient k is between -1 and 0, the surface curve of the lens is an ellipse; when the coefficient k is equal to 0, the surface curve of the lens is a circle, and when the k coefficient is greater than 0, the surface curve of the lens is oblate; a ₁ to a ₈ respectively represent the coefficients corresponding to each radial coordinate. Through the above parameters, the shape and size of the aspheric surfaces on the front and rear sides of the lens can be precisely set. The following is an actual design case, the light splitting element is made of coated flat glass;

Group zoom, focus moving range:

The distance between one group of optical lenses and the second group of optical lenses is 43mm;

The distance between the second group of optical lenses and the third group of optical lenses is 74mm;

The distance between the third group of optical lens and the fourth group of optical lens is 9.5mm;

Optical lens four groups ~ image distance 15.5mm;

The distance between five groups of optical lenses and six groups of optical lenses is 10mm;

Six groups of optical lenses ~ image distance 16mm.

Claims (8)

1. A double-light zoom optical device applied to a monitoring system is characterized by comprising an optical lens group (G1), an optical lens group II (G2) and a light splitting module (M7) capable of splitting light waves passing through the optical lens group II (G2) into two different ranges of wavelengths, wherein a first diaphragm (801), an optical lens group III (G3), an optical lens group IV (G4) and a first photosensitive chip (901) are arranged in the emitting direction of one light wave, and a second diaphragm (802), an optical lens group V (G5), an optical lens group VI (G6) and a second photosensitive chip (902) are arranged in the emitting direction of the other light wave; the optical device also comprises an image processing system (M10) which can integrate and output the light waves received by the first photosensitive chip (901) and the second photosensitive chip (902); the optical lens group (G1) is a fixed lens group and comprises a first lens (101), the focal power of the first lens (101) is negative, the focal power of a second lens (102) is positive, the first lens (101) and the second lens (102) are bonded lenses, a third lens (103), and the focal power of the third lens (103) is positive.

2. A dual-optical zoom optical device for a monitor system according to claim 1, wherein the beam splitting module (M7) is at least one beam splitting element.

3. A dual-optical zoom optical device applied to a monitoring system as claimed in claim 1, wherein the second optical lens group (G2) is a moving lens group, and includes a fourth lens (201), the optical power of the fourth lens (201) is negative, the optical power of the fifth lens (202) is negative; and a sixth lens (203), wherein the focal power of the sixth lens (203) is positive, and the fifth lens (202) and the sixth lens (203) are cemented lenses.

4. a dual-optical zoom optical device applied to a monitoring system as claimed in claim 1, wherein the optical lens group G3 is a fixed lens group, and includes a seventh lens (301), and the seventh lens (301) is an aspheric lens; an eighth lens (302), the power of the eighth lens (302) being positive; and a ninth lens (303), wherein the optical power of the ninth lens (303) is negative, and the eighth lens (302) and the ninth lens (303) are cemented lenses.

5. A two-optical zoom optical device applied to a monitoring system as claimed in claim 1, wherein the optical lens group (G4) is a moving lens group, and includes a tenth lens (401), the power of the tenth lens (401) is positive, the eleventh lens (402), the power of the eleventh lens (402) is positive, the twelfth lens (403), the power of the twelfth lens (403) is negative, the eleventh lens (402) and the twelfth lens (403) are bonded, the thirteenth lens (404), the power of the thirteenth lens (404) is positive, the fourteenth lens (405), and the fourteenth lens (405) is an aspheric lens.

6. A two-optical zoom optical device applied to a monitoring system as claimed in claim 1, wherein the optical lens group (G5) is a fixed lens group, and includes a fifteenth lens (501), the power of the fifteenth lens (501) is positive, the power of the sixteenth lens (502) is negative, the power of the seventeenth lens (503) is positive, the power of the eighteenth lens (504), and the eighteenth lens (504) are aspheric lenses.

7. A two-optical zoom optical device applied to a monitoring system as claimed in claim 1, wherein the optical lens sixth group (G6) is a moving lens group, and includes a nineteenth lens (601), the focal power of the nineteenth lens (601) is positive, a twentieth lens (602), the focal power of the twentieth lens (602) is negative, the nineteenth lens (601) and the twentieth lens (602) are cemented lenses, a twenty-first lens (603), and the focal power of the twenty-first lens (603) is positive.

8. A dual optical zoom optical device applied to a monitor system as set forth in any one of claims 4, 5 and 6, wherein the aspherical surface shape of the aspherical lens satisfies the following equation:

in the formula, a parameter c is the curvature corresponding to the radius, y is a radial coordinate, the unit of the radial coordinate is the same as the unit of the length of the lens, and k is a conical conic coefficient; when the k coefficient is less than-1, the surface-shaped curve of the lens is a hyperbolic curve, and when the k coefficient is equal to-1, the surface-shaped curve of the lens is a parabola; when the k coefficient is between-1 and 0, the surface-shaped curve of the lens is an ellipse, when the k coefficient is equal to 0, the surface-shaped curve of the lens is a circle, and when the k coefficient is more than 0, the surface-shaped curve of the lens is an oblate; a1 to a8 each indicate a coefficient corresponding to each radial coordinate.