JP3002519U - Illuminated magnifying glass - Google Patents

Abstract

(57) [Abstract] [Purpose] In an illuminated magnifying glass, the distortion of the magnified image is substantially eliminated to improve the quality of the observed image. [Structure] An aspherical lens 11 whose distortion is corrected in an arm portion 20, and an object 1 arranged around the aspherical lens 11
The observation unit 10 including the illumination means 12 for illuminating By using the aspherical lens 11 as the magnifying means, an image having substantially no distortion can be seen.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an illuminated magnifying glass, that is, an illuminated magnifying glass suitable for reading a book or observing a small object on a table or the like.

[0002]

[Prior art]

 A magnifying glass that is used to magnify an object to be observed to observe details of the object and to read a book of fine characters is widely known, and further, a lighting means that illuminates the object with the magnifying glass. There is known a magnifying glass with an illumination provided adjacent to each other. A wide variety of these magnifying mirrors with illumination are in widespread use, from a magnifying glass with a hand-held handle used for reading newspapers to large-sized mirrors used for product inspection.

[0003]

[Problems to be solved by the device]

 By the way, in a conventional magnifying glass with illumination, since a spherical lens is used as the magnifying means, the image that is magnified and viewed is distorted, and especially when using a large-diameter lens, the distortion is observed at the peripheral portion. Aberration becomes remarkable and it is not suitable for observation.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a magnifying glass with illumination suitable for observation by correcting distortion of a visually recognized image.

[0005]

[Means for Solving the Problems]

 The illuminated magnifying glass of the present invention is characterized in that the distortion aberration of the visually recognized image is corrected by using an aspherical lens as the magnifying means.

That is, the illuminated magnifying glass of the present invention is provided with an observing section including an aspherical lens for correcting distortion and an illuminating section arranged adjacent to the aspherical lens. It is what

Further, the illuminated magnifying glass of the present invention can also be configured as a stationary type. That is, the structure is such that a support part, a bendable arm part having one end attached to the support part, and an aspheric lens for correcting distortion aberration provided at the other end of the arm part It is characterized in that it comprises an observing section consisting of an illuminating section arranged adjacent to the aspherical lens.

In these illuminated magnifying glasses, it is possible to provide an electric means for finely moving the observation part in the optical axis direction of the aspherical lens, and by providing such an electric means, the distance between the object and the lens can be increased. Can be adjusted accurately.

Further, the foldable arm basically has a fold line shape and is not limited to a foldable arm that can be bent at a predetermined angle at an intermediate portion or another foldable portion. It also has a curved shape and is flexible so that it can be fixed at a desired bending position.

The term “correcting the distortion” means that the distortion is corrected so as to be reduced to a level suitable for intended observation and reading, or at least to a level not causing any trouble. It means that an image having substantially no distortion can be observed.

[0011]

[Effect of action and device]

 According to the illuminated magnifying glass of the present invention, as the magnifying means, an aspherical lens that corrects the distortion aberration is used instead of the conventional spherical lens, so that the distortion aberration of the image that is magnified and visually recognized is substantially eliminated. It is more preferable to use a lens having a large aperture.

Further, by providing the observation unit with the electric means, the observation unit can be finely moved in the optical axis direction of the aspherical lens, and fine adjustment of the focus, which is difficult by manual operation, becomes possible.

[0013]

【Example】

 The illuminated magnifying glass of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view (A) and a plan view (B) showing a schematic configuration of a magnifying glass with illumination according to an embodiment of the present invention.

The illustrated magnifying glass with illumination is an example of a stationary type that is attached to the table 2 for observation or the like, and includes a support portion 30 that holds the table 1 and one end of the support portion 30 that is pivotally supported. Observing section comprising an arm part 20 provided with an aspherical surface and an aspherical lens 11 which is rotatably supported by the other end of the arm part 20 and whose distortion is corrected, and an illumination means 12 which is arranged around the aspherical lens 11 and illuminates the object 1. It consists of 10.

More specifically, in the support portion 30, a table 2 that is inserted between the upper and lower surfaces of the base portion 31 is provided with a fastening screw 32 that is vertically movably screwed onto the lower surface of a substantially U-shaped base portion 31. It has a well-known fixing structure that is fixed to the table 2 by tightening the tightening screw 32. The arm portion 20 is composed of two arm members 21 whose middle portions in the longitudinal direction are connected to each other by a bending means 22. The arm portion 20 is bent around the bending means 22, and one arm member 21 is provided. The end portion of the arm member 21 is rotatably supported by the base portion 31 of the support portion 30 via the bending member 23 and is bendable around the bending means 23, and the end portion of the other arm member 21 is bent by the bending member 24. It is rotatably supported by the observing section 10 via the bending means 24 and can be bent freely.

The observing section 10 also has an electric device 13 capable of moving the illuminating means 12 and the aspherical lens 11 integrally by a small distance in the arrow X direction (optical axis direction).

Further, a transformer 40 for the illumination means 12 is arranged on the upper surface of the base portion 31, and an electric wire 41 connected to a power source (not shown) is connected from the transformer 40. The electric device 13 is driven by a rechargeable battery, a dry battery, or the power source of the lighting means 12 (AC commercial power source or DC power source rectified via the transformer 40), and the switch 14 provided near the observing unit 10 is moved in the direction of the desired fine movement. It is operated by pressing. In the case of a rechargeable battery or a dry battery, these power supplies are built in the observation unit 10 together with the electric device 13, and the transformer 40 is an exchanger (not shown) that can selectively use one of an AC power supply and a DC power supply. It is a configuration provided with.

The magnifying glass with illumination configured as described above bends the arm portion 20 around the bending members 22, 23, 24, and the object 1 to be observed placed on the table 2. The distance to the observation unit 10 can be set to a desired length within the range of the length of the arm unit 20. Further, when approaching or moving away from each other by a minute distance, the electric device 13 may be operated by the switch 14 to finely move the observation unit 10 with respect to the object 1.

According to the illuminated magnifying glass including the aspherical lens 11 with the distortion thus corrected, for example, when an object having a lattice pattern that is orthogonal to each other is observed, the illuminated magnifying glass using the conventional spherical lens is used. An image which is distorted and visually recognized by the magnifying glass as shown in FIG. 2A can be visually recognized as an image having substantially no distortion as shown in FIG.

Further, since the observation unit 10 is provided with the electric device 13, the observation unit 10 can be finely moved in the optical axis X direction of the aspherical lens 11, and the distance between the object 1 and the lens 11 can be accurately measured. It can be adjusted.

Note that the illuminated magnifying glass of the present invention is not limited to the embodiment described above, and, for example, as shown in FIG. 3, instead of the arm portion 20 shown in FIG. It is also possible to adopt a configuration including a flexible arm portion 20 'that is bendable so as to be fixed at a desired bending position.

Further, it is not limited to the stationary type having the arm portions 20 and 20 ′ and the support portion 30, but the observation portion 10 ′ is provided at the peripheral edge of the aspherical lens 11 ′, as shown in FIG. 4, for example. Alternatively, the frame member 15 may be a hand-held type such as a loupe having the illuminating means 12 'for illuminating the object 1 and the frame member 15 provided with the holding means 50.

[Brief description of drawings]

FIG. 1A is a side view and FIG. 1B is a plan view showing a schematic configuration of a magnifying glass with illumination according to an embodiment of the present invention.

2A and 2B are diagrams showing an image visually recognized when observing a lattice-patterned object, where FIG. 2A is an image visually recognized by an illuminated magnifying glass using a conventional spherical lens and FIG. Image visually recognized by an illuminated magnifying glass using an aspherical lens according to an embodiment of the invention

FIG. 3 is a side view showing an embodiment of another illuminated magnifying glass having a flexible arm portion.

FIG. 4 is a perspective view showing an embodiment of a handheld illuminated magnifying glass.

[Explanation of symbols]

 10, 10 'Observation part 11, 11' Aspherical lens 12, 12 'Illumination means 13 Electric device 14 Switch 20 Arm part 20' Flexible arm part 21 Arm member 22, 23, 24 Bending means 30 Support part 31 Base part 32 Tightening screw 40 Transformer 41 Electric wire 50 Gripping means

Claims (4)

[Scope of utility model registration request] 1. An illuminating magnifying glass comprising an observing section including an aspherical lens having distortion corrected and an illuminating section arranged adjacent to the aspherical lens. 2. The illuminated magnifying glass according to claim 1, further comprising an electric means for finely moving the observation section in the optical axis direction of the aspherical lens. 3. A support part, a bendable arm part having one end attached to the support part, and an aspherical lens provided at the other end of the arm part for correcting distortion and the aspherical lens. An illuminating magnifying glass, which comprises an observing section including an illuminating section disposed adjacent to the illuminating section. 4. The magnifying glass with illumination according to claim 3, further comprising an electric means for finely moving the observation section in the optical axis direction of the aspherical lens.