CN212989761U

CN212989761U - Condensing lens

Info

Publication number: CN212989761U
Application number: CN202021957976.5U
Authority: CN
Inventors: 李刚
Original assignee: Shenzhen Ousheng Tongxin Optoelectronic Co ltd
Current assignee: Shenzhen Ousheng Tongxin Optoelectronic Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-04-16
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a condensing lens, including base, light ring adjust knob, main part, green piece, condensing lens, light fence piece, screw thread lens, location flange and light ring, the base is located the bottom of whole device, the base upper end is equipped with the main part, the main part front side is equipped with light ring adjust knob, the main part upper end is equipped with first fixed block, first fixed block upper end is equipped with the second fixed block, green piece bottom is equipped with condensing lens, the condensing lens bottom is equipped with light fence piece, light fence piece bottom is equipped with screw thread lens, the screw thread lens bottom is equipped with the light ring, green piece, condensing lens, light fence piece and screw thread lens both ends all are equipped with location flange. The utility model discloses the effect of location flange is injectd lens, prevents to appear not hard up, installs the unstable condition, has set up light ring adjust knob and has adjusted light ring to suitable position, makes its performance steady, comfortable, light-tight.

Description

Condensing lens

Technical Field

The utility model relates to a condensing lens particularly, relates to a condensing lens.

Background

The condenser lens is also called condenser and is arranged below the objective table. In a small microscope, a condenser lens is not provided, and when an objective lens having a numerical aperture of 0.40 or more is used, the condenser lens is required. The condenser lens can not only make up the deficiency of the light quantity and properly change the property of the light emitted from the light source, but also focus the light on the detected object to obtain the best illumination effect. The condenser may be divided into a bright field condenser and a dark field condenser. The common optical microscope is provided with a bright field condenser, and the bright field condenser comprises an Abbe condenser, a Zeming condenser and a rocking condenser. Abbe concentrators exhibit chromatic and spherical aberrations for objective numerical apertures above 0.6. The aplanatic condenser has high correction degree on chromatic aberration, spherical aberration and coma aberration, is the condenser with the best quality in bright field microscopy, but is not suitable for an objective lens with the power of less than 4 times. The swinging condenser can swing the lens on the condenser out of the light path to meet the requirement of large-field illumination of the low-power objective lens.

If the aperture is opened too much and exceeds the numerical aperture of the objective lens, light spots are generated; if the iris diaphragm is too small, the resolution is reduced and the contrast is increased. Therefore, during observation, the field stop (the microscope with the field stop) is opened to the circumscribe position of the field periphery through the adjustment of the iris diaphragm, so that objects which are not in the field cannot be illuminated by any light, the interference of scattered light is avoided, if the condensing lens has the problems of looseness, light leakage and the like, the annular light beam is uniformly irradiated from the periphery of the optical system, the part with microscopic defects and foreign matters cannot be detected, and the directional defects cannot be detected, and a condensing lens is needed to solve the problem.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a condensing lens to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a condensing lens, includes base, light ring adjust knob, main part, green piece, condensing lens, light fence piece, screw lens, location flange and light ring, the base is located the bottom of whole device, the base upper end is equipped with the main part, the main part front side is equipped with light ring adjust knob, the main part upper end is equipped with first fixed block, first fixed block upper end is equipped with the second fixed block, be equipped with on the second fixed block green piece, green piece bottom is equipped with condensing lens, the condensing lens bottom is equipped with the light fence piece, light fence piece bottom is equipped with screw lens, the screw lens bottom is equipped with the light ring, green piece, condensing lens, light fence piece and screw lens both ends all are equipped with the location flange.

Furthermore, the front side of the main body is provided with scale marks, and the aperture adjusting knob is movably connected with the main body.

Further, the base is fixedly connected with the main body.

Further, the main part is fixedly connected with a first fixed block, and the first fixed block is fixedly connected with a second fixed block.

Furthermore, the two ends of the green sheet, the condenser lens, the light barrier sheet and the screw lens are fastened with the positioning flange.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a condensing lens, the green sheet, the condensing lens, the light barrier sheet and the screw lens arranged in the device are all limited on the positioning flange, the positioning flange is used for limiting the lens, the looseness and the instable installation are prevented, and the light ring adjusting knob is arranged for adjusting the light ring to a proper position, so that the performance of the condensing lens is stable, comfortable and light-tight; whole device reasonable in design, compact structure avoids condensing lens production not hard up, light leak scheduling problem, and the top of device is equipped with green piece, and green piece reaches monochromatic purpose at the light source rear end, and the illuminating effect is fine, is fit for using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a condensing lens according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an interior of a condenser lens according to an embodiment of the present invention.

Reference numerals:

1. a base; 2. an aperture adjusting knob; 3. scale lines; 4. a main body; 5. a first fixed block; 6. a second fixed block; 7. a green sheet; 8. a condenser lens; 9. a light barrier sheet; 10. a threaded lens; 11. a positioning flange; 12. and (4) an aperture.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-2, a condenser lens according to an embodiment of the present invention includes a base 1, an aperture adjusting knob 2, a main body 4, a green sheet 7, a condenser lens 8, a diaphragm sheet 9, a screw lens 10, a positioning flange 11 and an aperture 12, wherein the base 1 is located at a bottom end of the whole apparatus, the main body 4 is disposed at an upper end of the base 1, the aperture adjusting knob 2 is disposed at a front side of the main body 4, a first fixing block 5 is disposed at an upper end of the main body 4, a second fixing block 6 is disposed at an upper end of the first fixing block 5, the green sheet 7 is disposed on the second fixing block 6, the condenser lens 8 is disposed at a bottom end of the green sheet 7, the diaphragm sheet 9 is disposed at a bottom end of the condenser lens 8, the screw lens 10 is disposed at a bottom end of the diaphragm sheet 9, the aperture 12 is disposed at a bottom end of the screw lens 10, and the green sheet, The two ends of the condenser lens 8, the diaphragm 9 and the screw lens 10 are provided with the positioning flanges 11.

Through the above technical scheme of the utility model, 4 front sides of main part are equipped with scale mark 3, and the effect of scale mark 3 is as required to adjust suitable position, is convenient for find the scale that needs adjust sooner, light ring adjust knob 2 and 4 swing joint of main part, base 1 and 4 fixed connection of main part, main part 4 and 5 fixed connection of first fixed block, first

fixed block

5 and 6 fixed connection of second fixed block, green piece 7, condenser lens 8, diaphragm piece 9 and screw lens 10 both ends all with 11 lock joints of locating flange.

When the utility model is applied specifically, the green sheet 7, the condenser lens 8, the diaphragm sheet 9 and the screw thread lens 10 arranged in the device are all limited on the positioning flange 11, the positioning flange 11 is used for limiting the lens, the looseness and instable installation are prevented, and the aperture adjusting knob 2 is arranged for adjusting the aperture 12 to a proper position, so that the performance of the condenser lens is stable, comfortable and light-tight; whole device reasonable in design, compact structure avoids condensing lens production not hard up, light leak scheduling problem, and the top of device is equipped with green piece, and green piece 7 reaches monochromatic purpose at the light source rear end, and the illuminating effect is fine, is fit for using widely.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A condenser lens is characterized by comprising a base (1), an aperture adjusting knob (2), a main body (4), a green sheet (7), a condenser lens (8), a diaphragm sheet (9), a threaded lens (10), a positioning flange (11) and an aperture (12), wherein the base (1) is positioned at the bottom end of the whole device, the main body (4) is arranged at the upper end of the base (1), the aperture adjusting knob (2) is arranged at the front side of the main body (4), a first fixing block (5) is arranged at the upper end of the main body (4), a second fixing block (6) is arranged at the upper end of the first fixing block (5), the green sheet (7) is arranged on the second fixing block (6), the condenser lens (8) is arranged at the bottom end of the green sheet (7), the diaphragm sheet (9) is arranged at the bottom end of the condenser lens (8), the threaded lens (10) is arranged at the bottom end of the diaphragm sheet (9), the diaphragm (12) is arranged at the bottom end of the screw thread lens (10), and the positioning flanges (11) are arranged at the two ends of the green sheet (7), the condenser lens (8), the diaphragm sheet (9) and the screw thread lens (10).

2. A condenser lens according to claim 1, wherein the front side of the main body (4) is provided with graduation marks (3), and the aperture adjusting knob (2) is movably connected with the main body (4).

3. A condenser lens according to claim 1, characterized in that the base (1) is fixedly connected to the body (4).

4. A condenser lens according to claim 1, wherein the main body (4) is fixedly connected to a first fixing block (5), and the first fixing block (5) is fixedly connected to a second fixing block (6).

5. A condenser lens according to claim 1, wherein the green sheet (7), the condenser lens (8), the diaphragm sheet (9) and the screw lens (10) are fastened to the positioning flange (11) at both ends.