CN212814959U

CN212814959U - Mirror

Info

Publication number: CN212814959U
Application number: CN202020822835.6U
Authority: CN
Inventors: 周鄂林; 陈林生
Original assignee: Touchbeauty Beauty & Health Shenzhen Co ltd
Current assignee: Touchbeauty Beauty & Health Shenzhen Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-03-30
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a mirror, including base, mirror holder, lens and actuating mechanism. The base comprises a chassis and a shell, and the shell is rotatably arranged on the chassis; the lens bracket is arranged on the shell; the lens is arranged on the spectacle frame; the driving mechanism comprises a motor and a transmission assembly, the motor is fixed on the shell and is connected with the chassis through the transmission assembly, and the motor drives the motor to rotate relative to the chassis through the transmission assembly so as to drive the shell to rotate. The utility model discloses technical scheme's mirror has can automatic pivoted advantage, can show the use that promotes the user and experience.

Description

Mirror

Technical Field

The utility model relates to a mirror technical field, in particular to mirror.

Background

Cosmetic mirrors are the most common mirrors in daily life. In the process of using the cosmetic mirror to make up, a user often rotates the cosmetic mirror to adjust the angle of the cosmetic mirror, so as to obtain a better visual angle. However, the existing cosmetic mirror can only be rotated manually, and when a user makes up, the user usually has cosmetics on the hand, which is not convenient to rotate the mirror, and the user experience is not good.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a mirror, aim at solving the mirror and need manual pivoted technical problem.

In order to achieve the above object, the present invention provides a mirror, including:

the base comprises a chassis and a shell, and the shell is rotatably arranged on the chassis;

the mirror bracket is arranged on the shell;

the lens is arranged on the spectacle frame; and

the driving mechanism comprises a motor and a transmission assembly, the motor is fixed on the shell and is connected with the chassis through the transmission assembly, and the motor drives the motor to rotate relative to the chassis through the transmission assembly so as to drive the shell to rotate.

Optionally, the transmission assembly comprises a gear and a rack arranged in an arc shape, the rack is fixed on the chassis, the gear is arranged on an output shaft of the motor, the gear is meshed with the rack and connected with the rack, and the motor drives the gear to rotate, so that the motor and the gear rotate along the extending direction of the rack.

Optionally, the rack is annularly arranged.

Optionally, the rack comprises an annular mounting portion and a meshing portion arranged on an inner annular surface or an outer annular surface of the annular mounting portion.

Optionally, the gear includes a first gear, a second gear and a third gear, the first gear is disposed on the output shaft of the motor, the second gear is engaged with the first gear, the third gear is coaxially connected with the second gear, and the third gear is engaged with the rack, wherein a transmission ratio of the first gear and the second gear is greater than 1, and/or a pitch circle diameter of the second gear is greater than a pitch circle diameter of the third gear.

Optionally, the carousel rotationally locates the base, the motor is fixed in the carousel, carousel and rack are rotatable relatively, the carousel with be equipped with limit structure between the rack, limit structure is used for the restriction the carousel rotates preset angle.

Optionally, the limiting structure comprises a limiting groove and a limiting flange, one of the limiting groove and the limiting flange is arranged on the rack, the other is arranged on the turntable, the limiting flange is used for being clamped into the limiting groove to limit the turntable to rotate by a preset angle, wherein,

the limiting grooves are at least two, the adjacent limiting grooves correspond to the central angles of the racks and are preset angles, and/or the limiting flanges are at least two, and the adjacent limiting flanges correspond to the central angles of the racks and are preset angles.

Optionally, the carousel is the cyclic annular setting, the carousel ring is located the periphery of rack.

Optionally, an accommodating ring groove is formed between the rotary disc and the chassis, and a thrust ball bearing is arranged in the accommodating ring groove; and/or the shell further comprises an upper cover, the upper cover is arranged on the turntable, and the periphery of the upper cover is rotationally connected with the periphery of the chassis.

Optionally, the lenses include a first lens and a second lens, the first lens and the second lens are respectively disposed on two opposite sides of the frame, and the first lens and the second lens are different in type.

The utility model discloses technical scheme is through locating the casing with the motor to make the motor pass through drive assembly and be connected with the chassis, so, rotate for the chassis at motor accessible drive assembly drive self, and then drive the casing and rotate, further drive the mirror holder and rotate, because the mirror holder is located to the lens, thereby alright pass through the automatic rotation of actuating mechanism drive lens. It is thus clear that compare in can only drive pivoted mirror through manual mode, the mirror of this application has the advantage that can automatic pivoted, can show user's use experience that promotes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a mirror according to the present invention;

FIG. 2 is a schematic diagram of another perspective view of the embodiment shown in FIG. 1;

FIG. 3 is a cross-sectional view of the base of the embodiment of FIG. 1;

FIG. 4 is a schematic view of the drive mechanism of the embodiment of FIG. 1;

FIG. 5 is an exploded view of the drive mechanism and chassis of the embodiment of FIG. 1;

FIG. 6 is an exploded view of the rack and turntable of the embodiment of FIG. 1;

fig. 7 is an exploded view of the motor and gear of the embodiment shown in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Base seat	11	Chassis
12	Shell body	121	Rotary disc
				122	Upper cover	20	Spectacle frame
30	Lens	31	First lens
				32	Second lens	40	Driving mechanism
41	Electric machine	42	Transmission assembly
				421	Gear wheel	421a	First gear
421b	Second gear	421c	Third gear
				422	Rack bar	422a	Annular mounting part
422b	Engaging part	50	Limiting structure
				51	Limit flange	52	Limiting groove
60	Thrust ball bearing

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a mirror.

In an embodiment of the present invention, as shown in fig. 1 to 4, the mirror includes a base 10, a frame 20, a lens 30, and a driving mechanism 40. The base 10 comprises a chassis 11 and a shell 12, wherein the shell 12 is rotatably arranged on the chassis 11; the frame 20 is disposed in the housing 12 and the lenses 30 are disposed in the frame 20. The driving mechanism 40 includes a motor 41 and a transmission assembly 42, the motor 41 is fixed to the housing 12, the motor 41 is connected to the chassis 11 through the transmission assembly 42, and the motor 41 can drive the motor 41 to rotate relative to the chassis 11 through the transmission assembly 42 to drive the housing 12 to rotate.

Specifically, in the present embodiment, the chassis 11 is disposed on a load-bearing object (typically, a desk, a cabinet, etc.), and the housing 12 is rotatably disposed on the chassis 11, i.e., the housing 12 can rotate relative to the load-bearing object. The mirror is disposed on the mirror holder 20, and the mirror holder 20 is disposed on the housing 12, so that when the housing 12 rotates, the mirror holder 20 is driven to rotate, and the mirror is driven to rotate. The rotation of the housing 12 is effected by means of the drive mechanism 40.

Specifically, the driving mechanism 40 includes a motor 41 and a transmission assembly 42, wherein the motor 41 is fixed on the housing 12, and the motor 41 is connected to the chassis 11 through the transmission assembly 42. It is known that, in general, when the motor 41 drives the driven member, the motor 41 itself is stationary compared to the driven member. In the present embodiment, since the mirror is placed on the carrier, the chassis 11 is fixed, the housing 12 is rotatable, and the motor 41 is mounted to the housing 12 and connected to the chassis 11 through the transmission assembly 42. Then, when the motor 41 drives the transmission assembly 42, the motor 41 can rotate relative to the chassis 11 under its own driving force, and thus the housing 12 rotates. The housing 12 can drive the mirror holder 20 to rotate, and further drive the mirror to rotate, so that the mirror can be automatically rotated, and the problem that the existing mirror can only be manually turned by a user and is inconvenient to use is solved. It can be seen that the mirror of this application, have can the automatic rotation, the advantage of the user of being convenient for uses.

The on/off mode of the motor 41 can be realized by providing a switch electrically connected to the motor 41 on the base 10 or the mirror holder 20, or by providing a remote control switch or a voice control switch electrically connected to the motor 41.

Optionally, in this embodiment, the base 10 is disposed in a conical shape. With this arrangement, not only can the stability of the mirror when placed be improved, but also the base 10 has sufficient structural strength to support the mirror holder 20; further, the base is formed in a conical shape, so that the space occupied by the base 10 can be reduced, and the appearance of the base 10 can be improved. Of course, the design of the present application is not limited thereto, and in other embodiments, the base 10 may be disposed in other structures, such as a hemispherical shape, a cylindrical shape, a quadrangular prism shape, and the like.

Specifically, in the present embodiment, the lens 30 includes a first lens 31 and a second lens 32, the first lens 31 and the second lens 32 are respectively disposed on two opposite sides of the frame 20, and the first lens 31 and the second lens 32 are different in type. It will be appreciated that by providing two different types of first and

second lenses

31, 32 on opposite sides of the frame 20, the user can select different types of mirrors according to his or her needs and, in use, flip the frame 20 to select a different lens 30 according to his or her needs. Illustratively, in the present embodiment, the first lens 31 is a plane mirror, and the second lens 32 is a concave mirror. It can be understood that the concave mirror has an enlarging function, so that when a user makes up, the user can use the plane mirror to draw the whole makeup firstly, and then rotate the mirror bracket 20 to use the concave mirror to draw the local makeup more finely, thereby improving the makeup effect of the user. Of course, the design of the present application is not limited thereto, and in other embodiments, the first lens 31 and the second lens 32 may be a combination of two other types of lenses 30, such as a plane mirror and a convex mirror.

As shown in fig. 4 to 7, in the present embodiment, the transmission assembly 42 includes a gear 421 and a rack 422. Wherein, the rack 422 is arc-shaped and fixed on the chassis 11, the gear 421 is arranged on the output shaft of the motor 41, and the gear 421 is engaged with the rack 422. The motor 41 is used to drive the gear 421 to rotate, so that the motor 41 and the gear 421 rotate along the extending direction of the rack 422. Since the rack 422 is fixed to the chassis 11 and the motor 41 is meshed with the rack 422 through the gear 421, when the motor 41 drives the gear 421 to rotate, the gear 421 can rotate around the extending direction of the rack 422, so as to drive the motor 41 to rotate around the rack 422. It can be understood that the coupling assembly of the rack 422 and the gear 421 can make the transmission assembly 42 simple in structure, easy to implement, and easy to implement the rotation of the motor 41. And, by setting the extending direction of the rack 422, the moving track of the motor 41 can be limited, and the moving track of the mirror can be limited, so that different products can be prepared according to different purposes, i.e. the adaptability of the mirror is higher. Of course, the design of the present application is not limited to this, and in other embodiments, the transmission assembly 42 may be provided as two gears that are engaged and connected, wherein one gear is fixed to the chassis 11, and the other gear is provided on the output shaft of the motor 41. Thus, when the motor 41 is operated, the gear disposed on the output shaft of the motor 41 rotates around the gear fixed to the chassis 11, so as to drive the motor 41 to rotate, and further drive the housing 12 and the mirror holder 20 to rotate.

Specifically, the rack 422 of the present embodiment is annularly disposed. It can be understood that, by arranging the rack 422 in a ring shape, the motor 41 rotates around the fixing ring for one circle, and then the mirror holder 20 is driven to rotate for one circle. In the present embodiment, since the first lens 31 and the second lens 32 are respectively disposed on two opposite sides of the frame 20, the motor 41 only needs to rotate around the fixing ring in one direction to drive the frame 20 to rotate. The advantage of setting up like this has reduced motor 41 and automatically controlled requirement, can both reduce cost, is favorable to improving stability again. Meanwhile, the rack 422 is arranged in a ring shape, so that the first lens 31 and the second lens 32 can be driven to rotate around the center of the rack 422, and the positions of the first lens 31 and the second lens 32 are basically kept consistent, so that the use experience of a user is improved. Meanwhile, the gear 421 is configured to be annular, and the length of the rack 422 can be increased, so that the movement distance of the motor 41 rotating around the rack 422 for one circle can be increased. The increased distance traveled by the motor 41 reduces the rotational speed of the housing 12, i.e., the rotational speed of the frame 20. In this way, the frame 20 can be slowly rotated, and the user experience can be improved. Of course, the design of the present application is not limited thereto, and in other embodiments, the rack 422 may be disposed in an open arc shape.

Specifically, the rack 422 includes an annular mounting portion 422a, and an engaging portion 422b provided on an inner annular surface or an outer annular surface of the annular mounting portion 422 a. It is understood that the engagement portion 422b is provided on the inner or outer circumferential surface of the annular mounting portion 422a, and the rack 422 can be easily fixed to the chassis 11 by the annular mounting portion 422 a. Also, the annular mounting portion 422a can improve the structural strength of the rack 422. The engaging portion 422b may be disposed on an inner annular surface or an outer annular surface of the annular mounting portion 422a, so that the rack 422 may be adaptively designed according to actual requirements, and the adaptability is higher. Specifically, in the present embodiment, the engagement portion 422b is provided on the inner annular surface of the annular mounting portion 422 a.

Specifically, in the present embodiment, the rack 422 includes a first gear 421a, a second gear 421b, and a third gear 421 c. The first gear 421a is disposed on the output shaft of the motor 41, the second gear 421b is engaged with the first gear 421a, the third gear 421c is coaxially connected with the second gear 421b, and the third gear 421c is engaged with the rack 422. The gear ratio of the first gear 421a and the second gear 421b is greater than 1, and the pitch diameter of the second gear 421b is greater than the pitch diameter of the third gear 421 c. In this embodiment, a mounting bracket 411 is disposed at one end of the casing of the motor 41, and the second gear 421b is rotatably mounted on the mounting bracket 411. It can be understood that the transmission between the first gear 421a and the second gear 421b is a speed reduction transmission by setting the transmission ratio of the first gear 421a and the second gear 421b to be greater than 1. This advantageously reduces the output speed of the motor 41, which in turn facilitates slowing the rotational speed of the housing 12, i.e., the rotational speed of the frame 20. Meanwhile, the pitch circle diameter of the second gear 421b is made larger than the pitch circle diameter of the third gear 421c, and is set such that the linear velocity of the third gear 421c is smaller than the linear velocity of the second gear 421 b. That is, compared to the transmission method in which the second gear 421b is directly engaged with the rack 422, the transmission method in which the third gear 421c is engaged with the rack 422 can reduce the output rotation speed of the motor 41, which is advantageous for reducing the rotation speed of the housing 12. In this way, the first gear 421a, the second gear 421b, and the third gear 421c connect the motor 41 and the rack 422, so that the output rotation speed of the motor 41 can be reduced, which is advantageous for the slow rotation of the housing 12, that is, the slow rotation of the lens holder 20 can be achieved. Therefore, the use experience of the user is improved. Of course, the torque of the motor 41 can also be increased by the reduction transmission of the first gear 421a, the second gear 421b and the third gear 421c, thereby reducing the requirement on the motor 41 to reduce the manufacturing cost of the mirror. Meanwhile, the second gear 421b and the third gear 421c are used for driving the first gear 421a and the rack 422, so that the space in the housing 12 can be reasonably utilized, and the volume of the housing 12 can be reduced. In other embodiments of the present application, in order to reduce the output rotation speed of the motor 41, the gear ratio between the first gear 421a and the second gear 421b may be larger than 1, or the pitch diameter of the second gear 421b may be larger than the pitch diameter of the third gear 421 c. It should be further noted that the design of the present application is not limited thereto, and in other embodiments of the present application, the motor 41 may be in transmission connection with the rack 422 through the first gear 421a, or the motor 41 may be in transmission connection with the rack 422 through only the first gear 421a and the second gear 421 b.

Further, the housing 12 of the present embodiment includes a turntable 121 and an upper cover 122.

As shown in fig. 6, the turntable 121 is rotatably disposed on the chassis 11, the motor 41 is fixed to the turntable 121, the turntable 121 and the rack 422 can rotate relatively, and a limiting structure 50 is disposed between the turntable 121 and the rack 422, the limiting structure 50 is used to limit the turntable 121 to rotate by a predetermined angle. It will be appreciated that by fixing the motor 41 to the turntable 121, the motor 41 rotates the housing 12 by driving the turntable 121 to rotate. Then, the rotation angle of the housing 12 can be further limited by limiting the rotation angle of the turntable 121 through the limiting structure 50, so that the mirror bracket 20 can rotate by a preset angle every time the mirror bracket 20 rotates, and the use is convenient for the user. For example, in the present embodiment, since the first lens 31 and the second lens 32 are respectively disposed on two opposite sides of the frame 20, the frame 20 can be rotated by 180 degrees at a time by the limiting structure 50. In this way, the first lens 31 or the second lens 32 can always face the user for each rotation of the frame 20, which is convenient for the user. Of course, in other embodiments, the rotation angle of the frame 20 can be modified according to specific requirements.

Specifically, the stopper structure 50 includes a stopper groove 52 and a stopper flange 51. One of the limiting groove 52 and the limiting flange 51 is disposed on the rack 422, the other is disposed on the rotating disc 121, and the limiting flange 51 is used for being clamped into the limiting groove 52 to limit the rotating disc 121 to rotate by a preset angle. The number of the limiting grooves 52 is at least two, the central angles of the two adjacent limiting grooves 52 corresponding to the center of the rack 422 are the preset angles, and/or the number of the limiting flanges 51 is at least two, and the central angles of the two adjacent limiting flanges 51 corresponding to the center of the rack 422 are the preset angles. It should be noted that the central angle corresponding to the center of the rack is the angle between the connecting line of the adjacent two limiting flanges 51 and the center of the rack 422. Set up like this, because two adjacent spacing recesses 52 and/or two spacing flanges 51 correspond the central angle at rack 422 center and be preset angle, then at carousel 121 pivoted in-process, certain spacing flange 51 can be in proper order with two adjacent spacing recesses 52 joint, or, certain spacing recess 52 can be in proper order with two adjacent spacing flanges 51 joint, thereby can restrict the turned angle of carousel 121, with the turned angle of restriction casing 12. Specifically, in the present embodiment, the outer circumferential surface of the annular mounting portion 422a of the rack 422 is provided with one stopper flange 51, and the turntable 121 is provided with two stopper grooves 52. The two limiting recesses 52 are oppositely arranged, that is, the central angle of the two limiting recesses 52 corresponding to the center of the rack 422 is 180 degrees. Of course, the design of the present application is not limited thereto, and in other embodiments, 2, 3, 4, 5 or even more limiting flanges 51 or limiting grooves 52 may be disposed on the rack 422, and/or 2, 3, 4, 5 or even more limiting grooves 52 or limiting flanges 5 may be disposed on the turntable 121.

Specifically, in the present embodiment, the rotating disc 121 is disposed annularly, and the rotating disc 121 is disposed annularly on the outer periphery of the rack 422. It can be understood that, by arranging the turntable 121 in an annular structure and arranging the annular structure at the periphery of the rack 422, the contact area between the turntable 121 and the chassis 11 can be increased, which is beneficial to improving the stability of the installation of the housing 12 on the chassis 11. Meanwhile, the chassis 11 is annularly arranged on the periphery of the rack 422, which is beneficial to improving the effective utilization of the space in the shell 12 and reducing the volume of the shell 12. Of course, the design of the present application is not limited thereto, and in other embodiments of the present application, the rotating disk 121 may be provided on the inner periphery of the rack 422.

As shown in fig. 5, a receiving ring groove (not shown) is formed between the turntable 121 and the chassis 11, and the receiving ring groove is provided with a thrust ball bearing 60 therein. The thrust ball bearing 60 is a bearing in which two rotating rings are provided on both sides of a roller in the axial direction of the bearing. It can be understood that, by providing the thrust ball bearing 60 between the chassis 11 and the turntable 121, the resistance between the turntable 121 and the chassis 11 can be greatly reduced, so that the rotation of the turntable 121 can be smoother. Of course, the design of the present application is not limited thereto, and in other embodiments, the friction between the turntable 121 and the chassis 11 may be reduced by providing a lubricant.

As shown in fig. 3, the upper cover 122 is disposed on the turntable 121, and a peripheral edge of the upper cover 122 is rotatably connected to a peripheral edge of the chassis 11. It will be appreciated that by rotatably coupling the periphery of the upper cover 122 to the periphery of the chassis 11, the upper cover 122 can be supported by the chassis 11 to improve the stability of the rotation of the housing 12. Furthermore, the upper cover 122 is rotatably connected to the chassis 11, so that the sealing performance between the housing 12 and the chassis 11 can be improved, and the waterproof and dustproof performance of the base 10 can be improved.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A mirror, comprising:

the mirror bracket is arranged on the shell;

the lens is arranged on the spectacle frame; and

2. The mirror as claimed in claim 1, wherein said transmission assembly includes a gear and a rack disposed in an arc shape, said rack is fixed to said chassis, said gear is disposed on an output shaft of said motor, said gear is engaged with said rack, said motor drives said gear to rotate, so that said motor and said gear rotate along an extending direction of said rack.

3. A mirror as claimed in claim 2, wherein said rack is annularly disposed.

4. The mirror as claimed in claim 3, wherein said rack gear includes an annular mounting portion, and an engaging portion provided on an inner or outer annular surface of said annular mounting portion.

5. The mirror according to claim 2, wherein said gears comprise a first gear, a second gear and a third gear, said first gear being provided on an output shaft of said motor, said second gear being in mesh with said first gear, said third gear being coaxially connected to said second gear, and said third gear being in mesh connection with said rack, wherein a transmission ratio of said first gear and said second gear is greater than 1, and/or wherein a pitch diameter of said second gear is greater than a pitch diameter of said third gear.

6. The mirror as claimed in claim 3, wherein said housing includes a turntable rotatably disposed on said base, said motor is fixed to said turntable, said turntable is rotatable relative to said rack, and a limit structure is disposed between said turntable and said rack for limiting rotation of said turntable by a predetermined angle.

7. The mirror according to claim 6, wherein said stop structure comprises a stop groove and a stop flange, one of said stop groove and said stop flange being provided on said rack and the other of said stop groove and said stop flange being provided on said turntable, said stop flange being adapted to snap into said stop groove to limit rotation of said turntable by a predetermined angle,

8. The mirror as claimed in claim 6, wherein said turntable is disposed in a ring shape, said turntable being disposed around an outer periphery of said rack.

9. The mirror as claimed in claim 6, wherein a receiving ring groove is formed between said turntable and said base plate, and a thrust ball bearing is provided in said receiving ring groove; and/or the shell further comprises an upper cover, the upper cover is arranged on the turntable, and the periphery of the upper cover is rotationally connected with the periphery of the chassis.

10. The mirror as claimed in claim 1, wherein said lens includes a first lens and a second lens, said first lens and said second lens being disposed on opposite sides of said frame, said first lens being of a different type than said second lens.