JPS59152403A - Lens provided with joining function - Google Patents

Abstract

PURPOSE:To obtain a lens system having good performance by providing a joining function provided with projecting parts and recesses for the purpose of coupling to the lens to be joined. CONSTITUTION:The state before and after joining of the 1st lens 10 and the 2nd lens 20 is shown. A supporting part 13 is provided on the outside circumference of the lens body 11 of the lens 10 and plural recesses 14 for coupling the lens are provided on the lens coupling face which is the rear side face of the part 13 in the circumferential direction of the body 11. Plural projecting parts 15 for coupling the lens are further provided on the lens coupling face 18 which is the front side face of a lens supporting part 17 on the outside circumference of the lens body 12 of the 2nd lens 20 and in the position opposite to the resses 14 of the lens 10 in the circumferential direction of the lens body 12. Both lenses 10, 20 are coupled the above-mentioned recesses 14 and the projecting parts 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention & process relates to lenses in which each lens in a lens system consisting of a plurality of lenses can be attached to each other, without the use of glue or glue. The object of the present invention is to provide a lens with all the joining functions that allow easy attachment of lenses and glass lenses.

Conventionally, a lens system consisting of two or more lenses laminated together has been used. The alignment of this lens means the right side surface r2 of the first lunge 1 and the first lunge 1 as shown in FIG. 1a. The second lens 2 having the same radius of curvature on its left side r3 is stretched and bonded 7 as shown in Figure 1.
It is meant to be pasted together through W 3 k.

However, if the lens to be stretched is a glass lens, no problem will occur, but if the glass lens and the plastic lens are fully stretched between the plastic lenses, the following problem will occur.

In other words, in the case of #A where 4 glass lenses and 4 plastic lenses are glued together, in Figure 1, if the material of the lens 1 is all glass and the material of the second lens 2 is plastic, then the adhesive layer 3 is pasted together. As the adhesive of the adhesive layer 3 solidifies when the two lenses 4 are pasted together,
When it begins to shrink, the shape of the left side surface 13 of the second lens 2, which is a plastic lens, changes dramatically (wrinkles and undulations occur on the surface where the radius of curvature has changed), and the originally intended lens performance 4 is lost. It becomes impossible to maintain it. Also, even if the above change is allowable due to the design, the lens with this tension stand.

If changes in temperature and/or humidity are applied within the actual conditions of use, the adhesive layer 3 may peel off.
The change in the surface shape of the second lens is even larger (more than 10 times smaller than when the lens is attached), making it impossible for it to function as a lens. Depending on the adhesive used for the second lens, which is a plastic lens,
It is conceivable that the cemented surface r of the lens 2 may be eroded by the adhesive and lose its function as a lens.

Note that the above points are the same even when the material of the second lens 2 is plastic and the material of the second lens 2 is glass.

Conversely, in the case of plastic lenses, in other words, if the materials of the first lens 1 and the second lens 2 are all plastic, then the material of the first lens 1 and the second lens 2 are made of plastic.
When trying to bring the two lenses together, the cemented surfaces r2-r3 corrode, making it impossible to maintain the function of the lens. An adhesive that won't corrode 13-karat gold? Even if you use two lenses?
Zhang! When inserting the lens, it is necessary to chip in the direction of the original axis of the lens - the lens shape (mainly the radius of curvature) changes when the force is applied, and the adhesive solidifies, maintaining the entire designed radius of curvature. There are also problems that cannot be solved.

Furthermore, since the adhesive is not uniformly solidified, a large asperity occurs in the bonded lens system, which also causes problems in terms of lens aberration.

In addition, the glass lens and plastic lens are covered! As in the case of the L1 stand, if a temperature or humidity change is applied to a stretched lens system, the adhesive bonding N3 will peel and the lens shape will change significantly, making it difficult to achieve the desired lens performance. It is impossible to maintain this.

Therefore, according to the present invention, in order to bond lenses together in a lens system, it is possible to bond lenses that can be bonded together without an intervening layer of adhesive layer 3. It has been proposed to enable the contact between lenses and glass lenses without the above-mentioned drawbacks, and will be described in detail below in accordance with the illustrated embodiments.

First, FIGS. 2a and 2b show the entire first embodiment of the present invention, FIG. 2a shows the ML lens 1° and the second lens 20 that are to be attached to each other, and FIG. 2 6' shows the first lens. 10 and the second lens 2o are shown in a joined state.

However, in addition to providing the lens support section 13 on the outer periphery of the lens body 11 of the lens 10, a plurality of lenses are provided on the lens coupling surface 16 which is the rear surface of the lens support section 13 in the circumferential direction of the lens body 11. It is constituted by providing a coupling recess 14 (j), and on the other hand, a second
On the lens 2o, (on the lens coupling surface 18, which is the front side of the lens support portion 17 provided on the outer periphery of the main body 12, the lens 1° of the lens 2o is placed between the lens main bodies 12 in the circumferential direction. It is constructed by providing a plurality of lens fitting convex portions 15 at positions corresponding to the respective lens coupling concave portions 14.

In addition, the molding material of the first lens 10 and the second lens 2o can be made of glass or +S glass, and the concave portion 14 for connecting each lens of the winter lens 10 and 20, and the convex portion for serving. It is desirable that the portion 15 include an undercut portion.

Now, both lenses 10 and 20 consisting of Karu wt composition? When joining them together, as shown in Figure 2a, the first
and lens connection surface 16.18 of second lens 10.2o
After making them all face each other and making the respective lens coupling concave portions 14 and coupling convex portions 15 on both surfaces 16 and 18 completely face each other, both of them are at an angle of 16° 18? The respective lens coupling convex portions 15' of the second lens 20 are brought into butt and pressure contact with each other.
By making full use of the elasticity of either one or both of the lens coupling concave portions 14, and making the lenses fit over the undercut portions of both lenses.

As shown in Figure 2, the first and second lenses are 10°20
? Can be joined.

In addition, as shown in FIG. 2C, in the second lens 20 that is in contact with the second lens 10, the lens supporting portion 17 of the lens body 12 is connected to a cylindrical connecting portion 19 (or a connecting arm) parallel to the lens axis. However, if Lv is configured such that the lens coupling surface 19a, which is the front side surface of the connecting portion 19, is provided with a lens coupling convex portion 15 corresponding to each lens coupling concave portion 14 of the lens 10, It is possible to connect both lenses 10 and 20 by making a hole between the first lens 10 and the second lens 20 at a distance corresponding to the length of the connecting part 19, and as shown in FIG. 7, the connecting part 19 It is possible to construct a lens system by interposing and fixing the third lens 30 between the first and second lenses 10 and 20' by joining the first and second lenses 1t120' and using the interval ? be.

Furthermore, as shown in FIG.
In addition to providing each lens coupling convex portion 15ak corresponding to each lens coupling concave portion 14 of the lens coupling surface 16 of the VC&1 lens 10, the lens coupling surface 1B'bK, which is the rear surface of the lens support portion 17', is The Lrf
k Lens coupling convex portion 15b corresponding to each lens coupling four portion 33? In addition, it is possible to bond the third lens 30' in addition to the 10% second lens 20' by the same operation as shown in the explanation with reference to FIG. 2C. .

Also, both the front and rear sides of the lens support part 17 of the lens body? A convex portion 15a for lens attachment on both sides of the lens coupling surface 18,
15b is also provided in the embodiment.

Front side surface 19a of the connecting portion 19 extending to the lens support portion 17
K7II] In addition, by providing lens coupling convex portions (not shown) on the rear side surface 19a' (see FIG. 2C), the CLvi2 lens 2 (HC) in FIG. ) It goes without saying that all lenses can be cemented, and in the same way, a plurality of lenses such as the fourth and fifth lenses can be sequentially cemented.

Furthermore, regarding the lens coupling recesses 14.33 and coupling convex parts 15% 158% 15b provided on each lens 10.20.20' and 30.30', as shown in Fig. 2 d-e. They can be arranged in any desired manner, such as being arranged on the same circumference or alternately on a plurality of circumferences. (However, Fig. 2 d.

2nd to e. Only the arrangement state of the lens coupling convex portion 15 of the lens 20 is shown).

In addition, each lens coupling concave part 14.33 and coupling convex part 15. in each lens 10.20.20-30.30'.
By arranging 15a and 15b completely oppositely,
It goes without saying that C can also be implemented in the same way.

In the second diagram, 22 is the lens support part 1 of the second lens 20'.
The lens holding part of the third lens 30 provided in 7? It shows.

Next, FIG. 3 shows the entire second embodiment of the lens of the present invention,
Points different from the first embodiment+! , a lens coupling recess 43 is provided on the lens coupling surface 42 of the lens support portion 41 of the lens 40.
At the same time, by providing all the lens coupling convex parts 44 alternately, a cp structure is formed, and the temperature of the second lens 50 is also increased to the lens coupling surface 51 of each lens coupling concave part 43 of the second lens 40. A concave part 53 for a lens attachment stand corresponding to the corresponding convex part 52 for lens attachment and the convex part 44 for a lens attachment stand.
It is constructed by providing the following.

Therefore, it is possible to join both 40 and 50 mm lenses by the same operation as in the ML embodiment, and the advantage is that even if there is a difference in the size of the 50 mm lenses, they can be held securely against the lens frame. have

FIG. 4 shows a third embodiment of the lens of the present invention, in particular, the shape of the lens concave VA 62 provided in the lens support portion 61 of the lens body 60 is an elongated hole extending in the radial direction of the lens 63. Examples of cross-sectional shapes in the direction perpendicular to the length direction are recesses 62a, 62b, and 62c shown in FIGS. 5a, 5b, and 5c, respectively.

Although not shown, the convex portion for lens delivery corresponding to this n has a shape corresponding to that shown in FIGS. 4 and 5. This will be implemented as soon as possible.

In addition, for other configurations, "C" can be implemented with constituent sounds similar to those in Embodiment 1.2.

FIG. 6 shows a fourth embodiment of the lens of the present invention, and the difference is in the shape of the lens coupling part 71, which has the same circumference of the lens 70 as its longitudinal direction, and a cross section taken in a direction perpendicular to the longitudinal direction. Is the shape an undercut similar to Figure 5g%C of the third embodiment? This can be implemented by forming the lens joint part 71' in a circular shape around the entire circumference of the lens.

Incidentally, the lens coupling portion 71 of the lens 7o is either a concave portion or a convex portion for attaching the lens VCJ! Other configurations, such as 11 configuration, can be implemented according to each of the above-described embodiments, and a detailed description of the configuration will be omitted.

Now, as is clear from the above explanation, according to the lens of the present invention, adhesion is 7! ii without intervening the whole layer.

Multiple lenses can be easily joined together.

In particular, it can be applied to bonding between plastic lenses or between glass lenses and glass lenses without any problems, making lens design easy to understand. At the same time, it is possible to provide a lens system with good performance.

In addition, the structure shown in FIG. 2 C1 in which a connecting portion 19 is provided at 45i- or the structure shown in FIG. The above-mentioned plurality of lenses can be easily placed together, the assembly and assembly of the lens system can be simplified, and the frame structure can be simplified.

[Brief explanation of the drawing]

FIG. 1 shows a conventional method of bonding lens systems, and FIG. 1g is a side view showing the 1.2 lens before bonding. Fig. 1 is a side view showing the bonded state, Figs. 2 to 6 show the first to fourth embodiments of the one-length lenses of the present invention, and Fig. 2g is a side sectional view of the first and second lenses before bonding. , Is the diagram in Figure 2 in contact? The side cross-sectional view shown in FIG. 2C shows the tea ceremony state of the first and second lenses when a connecting part is provided in the lens support part. Fig. 2 d and e are a side sectional view, and Fig. 2 d and e are plan views showing the arrangement of the lens fitting convex portion in the lens coupling portion, and Fig. 2 f +! Is there a convex part for connecting the lens on the front and rear image sides of the lens connecting part of the second lens? FIG. 2g is a partially omitted side sectional view showing a state in which the first to y-th lenses are fully engaged. A part showing the contact state when the third lens is fully interposed between the second lenses? The second embodiment is shown in FIG. 3, an omitted side sectional view. FIG. 7 is a side sectional view showing a bonded state of the second lens. Is Figure 4.5 the third embodiment? FIG. 5g-C is a partial cross-sectional view showing the cross-sectional shape of the lens opening recess provided in the lens shown in FIG. 4, and FIG. FIG. 3 is a plan view of the lens shown in FIG. 10.40... Second lens 20.20', 50... Second lens 30.30''... Third lens 11.12... Lens body 13.17.17', 41.61...・Lens support part 1
4.33, 43.53.62...Concave parts for lens attachment 15.15a, 15b, 44.53-...Convex part for lens connection 16.18. 18'a, 18'b, 32°4
2.51...Lens binding surface 19...Connecting portion. Patent applicant Olympus Togaku Kogyo Co., Ltd. No. 1 (Q) No. 2 (CI) Figure (b) Figure (b) Figure 2 Figure 3 Figure 4 Figure 6 Figure 5 (a) (b) (c ) Procedural Sleeve (Volunteer) September 7, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office] Indication of tenancy 1982 1% Patent Application No. 26792 Title of the invention 2 Lens with cementing function 3 Person performing correction Relationship with 41 cases Patent applicant (izofi, HL Tokyo, :ff1Kj3+2Kl j+', No. 43-2, Hatagaya 2-chome, Tani-ku, kl j+';g (I, f
, 1, ) (037) "Detailed explanation of the invention" and "Brief explanation of the drawings" by Shigeo Kitamura, President and CEO of Olympus Optical Industries Co., Ltd.
Contents of the amendment (1) In the second line of page 110 of the specification, the description of "rear side 19a" is corrected to "rear side 19b". (2) The statement “by providing in an annular shape” on page 12, line 19 of the specification has been changed to “in an annular shape or as shown in FIG.
By providing them in an elliptical shape at regular intervals.'' (3) "153" on page 15, line 9 of specification 4 has been changed to "
52”. (4) Among the drawings, Figure 4 shall be corrected as shown in the attached corrected drawing copy. 9. List of attached documents (1) 1 copy of original drawings

Claims (1)

[Scope of Claims] (1) The lens coupling convex portion corresponding to the lens to be bonded and/or the coupling concave portion, in particular, J: A bonding method characterized by: A lens with a powerful ability. (2+ Providing a connecting portion extending to the lens support portion provided on the outer periphery of the lens body, and providing a lens connecting convex portion or a T-shape/and a connecting concave portion corresponding to the lens to be brought into contact with this connecting portion. A lens with 4 joining functions, which has all the features of 31 points. (4) A lens having a bonding function characterized in that it is constructed by providing the lens with a plastic material.
A lens equipped with the bonding function described in Section 1. (5) A glass molded lens having a bonding function as set forth in claims 1 and 2 and &1 and 3, characterized in that the molding material of the lens is glass. (6) The bonding function according to claim 1, 2, or 3, which comprises the lens coupling convex portion, the coupling concave portion t, and an undercut portion? equipped lens. (7) The lens coupling convex portion or the coupling concave portion. Claim 1, which is provided in the radial direction of the lens.
A lens having all of the close-up functions described in item 1, 2, and 3. (8) The lens support portion outside the effective diameter of the lens body in which the lens coupling convex portion or the coupling concave portion is provided is molded with a molding material different from that of the lens body. A lens having all of the contact functions described in item 1, item 2, or item 3. (9) A lens having all the bonding functions as set forth in claim 1, 2, or 3, wherein the lens coupling convex portion or the four coupling portions are provided in the circumferential direction of the lens.