JPS5990808A - Plastic lens - Google Patents

Abstract

PURPOSE:To prevent flawing, etc. on the surfaces of a lens in the stage of fixing the lens to a jig, etc. by providing horizontal faces on the surfaces of the lens except its effective faces, perpendicularly to the optical axis direction thereof and providing projected or recessed parts in the optical axis direction on said faces. CONSTITUTION:Horizontal faces 1a, 2a are formed, perpendicularly to the optical axis direction, on the lens faces 1, 2 of a plastic lens except its effective faces, and projected parts 1b and depressed parts 2b are provided in said parts in the positions opposite to each other at, for example, in the four circumferential places at every other 90 deg.. Recessed parts 3a fitting to the projected parts 1b of the lens are beforehand formed around the one face of a jig 3 for fixing the lens and the projected parts 1b of the lens 1 are fitted into the parts 3a, whereby the lens is fixed to the jig 3 without damaging the effective faces of the lens.

Description

[Detailed description of the invention] The separate book button on the seat holder is made of synthetic qa4 that is easy to fix or position.
b effect H lens l, i41.

Conventional 1+IJ configuration and its l)+J issue, lens T
ICs made from crow were used for walking purposes, but in recent years synthetic 1νJ fat from fish has come to be widely used as a material for lenses. However, synthetic KM lenses are qualitatively softer than glass lenses and have weaker mechanical resistance.
Extreme care should be taken when handling this item. for example,
When applying A-coating treatment to the lens surface before anti-reflection, or when removing oil or foreign matter that adheres to the lens surface! Hot water often occurs when a steaming jig or a cleaning jig for cleaning the lens comes into contact with the lens surface LLl+V when cleaning is performed to remove #. As shown in J-1, many fires occur when synthetic resin lenses are placed in the lens direction jig or positioning jig (=lI). .

OBJECT OF THE INVENTION The object of the invention is to eliminate the problem of mermaids living in the United States, and to eliminate the scratches that occur when fixing a lens made of synthetic resin to a jig, etc., and to make it easy to fix or adjust the position. The purpose of the present invention is to provide a synthetic resin cleft lens.

In order to achieve the objective of the invention, the synthetic resin lens of the present invention has a horizontal plane perpendicular to the optical axis direction outside the effective lens 101 on at least one lens surface. 1 is provided with a portion that protrudes or recesses in the optical axis direction from the front surface.

Embodiments Hereinafter, embodiments based on the present invention will be described based on the drawings. First, an explanation will be given based on FIG. 1 showing the first implementation column.

This 144th embodiment is a double-sided convex lens made of synthetic resin, and the effective supination V of the lens m (1) (2) of this lens
A horizontal plane (la) (2a) is formed directly in the optical axis direction Vgoi1, and on this horizontal plane (1a) and υ (2a) there is a surface that protrudes from this horizontal plane (:ia) and (2a). The depressed portion (1'b) and (b) h-formation. These protruding parts (1b) and depressed parts (b) tJ, each other VC
90 mm at 4 positions in the circumferential direction of the no-lens provided at opposing positions.
It is set every 7 degrees.

FIG. 2 shows a second embodiment, which is a synthetic 41
This lens is a plano-convex lens made of 1 fat.
Lens surface (l) on the same body as above No. 1/I'l11/lI
Outside the effective range of (2), there is a horizontal plane (la
) (origin a), and this horizontal plane (1a) and (2a)
Above the horizontal planes (la) and (2a), there are formed parts (l and (2b)) which protrude and recess.These protruding parts (1b) and recessed parts (2b) also face each other. The projecting portions (
1b) and the recessed portion (2b) are formed so as to be continuous with the outer peripheral edge of the lens. By the way, in the first embodiment described in mJ, the protruding portion (1b) and the recessed portion (2b) f are formed at a small distance from the outer peripheral edge of the lens.

Although the above two embodiments have been described in detail, the protruding portions and recessed portions do not necessarily have to be formed every 90 degrees in the circumferential direction of the lens.
It is also possible to continuously protrude and recess in the entire circumferential direction on the horizontal plane (la) (2a) of the lens as in the fourth embodiment. In addition, in accordance with the first to fourth examples, the protruding portion (1b) is VC, the heaviest portion (1C) of the lens surface (t), so as not to cause any inconvenience in terms of distance with the adjacent lens. The VC policy is to ensure that the amount does not exceed

By forming the protruding portion (1b) and the recessed portion (2b) at the valley 6'tν at the same time when molding the resin lens, a phase-changed product can be obtained.

The jig for fixing the lens described above is shown in No. 5v1, and the periphery of one surface of this fixing jig (3) is
Continuous use is also possible] to the front h1 lens protruding part (11))
,! :1 A recessed part (3a) is formed, and by fitting the protruding part (1b) of the lens into this recessed part (3a), the lens can be fixed without soaking the effective surface of the lens. Tool (3) [Can be fixed. Also, as shown in Fig. 5, protruding parts (LSb) (at 90 degree intervals or consecutively) are formed around the other side of the VC fixing jig (3), and these protruding parts (3b) It is also possible to recess the recessed part (2b) of the lens and stack the lenses one after another as shown in Fig. 6.Furthermore, the stacked items can be transported by being fixed in one piece, or
7J (shown in the figure) can also be used for cleaning by appropriately setting the distance between the lenses.

Furthermore, when assembling the base at the border, the MIJ protruding insert (1b) or recessed part (2b) can be used to easily align and place the base.

Effects of the Invention As described above, when the synthetic resin lens of the present invention is used, fixing or positioning to a jig, boundary surface, etc., which has conventionally been difficult to handle, becomes extremely easy. Furthermore, especially when automating the vapor deposition or cleaning process VC, the protruding portion or the depressed table 15 minutes can be used as a reference for positioning, and a very large effect can be expected.

[Brief explanation of drawings]

The drawings show examples of the present invention, and FIGS.
4th example 1, in the signal (A) Uf direction diagram, (B) iJ GA) (D X -X arrow + g diagram, 'd
S b Figure ti, shows a seven-legged brace, body) is a square diagram, (
B) is a Y-Y arrow diagram of (A>), and Figure 6 is a cross-sectional view showing the lens-shaped cylindrical shape. (1) (2)-v lens surface, (la) (2a)
-・Horizontal surface, <1. b) - *Mountain part, (2b) ... Depression part Fig. 1 (c) Fig. 2 Fig. 3 Fig. 4'' (B)

Claims (1)

[Claims] Above: A horizontal direction is provided outside the effective lens surface of at least one lens surface, perpendicular to the optical axis direction, and light is projected onto this horizontal surface!
A synthetic resin lens having a portion protruding or recessed from the horizontal plane in the 1q11th gyrus. 2. The length of the protruding portion is such that it does not exceed the maximum height of the lens surface.Claim A lens made by Jll on the synthetic side, mounted on the first river. 3 The depressed portion of the protruding center was formed at the same time as the lens molding special VC.
A durable synthetic resin lens.