JPH02216118A - Device for coating lens with sumi - Google Patents

Abstract

PURPOSE:To automatically coat a lens with sumi (Indian ink) with a high precision by automatically controlling the rotational frequency of the lens, the movement position of a sumi discharge part, and the shake direction of a discharge port. CONSTITUTION:A lens rotating means 4, a moving means 2 of a sumi discharge part 1, and the shake direction of the discharge port of a device coating the lens with sumi are automatically controller by a control means 6. At the time of coating the lens with sumi, the moving means 2 is operated to move the sumi discharge part 1 to the start position of sumi coating after a lens W is set. A program to operate relations among the rotational frequency of the lens, the feed speed in each direction of the discharge part, and a coated film is stored in the control means, and a desired sumi coating mode is inputted to automatically coat the lens with sumi. Thus, the ununiformity due to an individual difference is prevented to improve the mass productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lens sanitizing device that applies lens black to the surface of a lens used in an optical system in order to adjust the light transmittance of the lens.

[Conventional technology]

As lenses for optical systems, in addition to total transmission types and total reflection types, partially transmission types are also used, in which the ratio of the amount of transmitted light is set in four sections. A method is adopted in which lens ink of a predetermined density is applied to the surface of the lens.

Traditionally, the inking of this lens relied heavily on manual labor.
This was done by pressing an absorbent material such as a sponge filled with lens ink against the rotating lens.

[Technical problem to be solved by the invention]

However, in the above-mentioned conventional technology, lens ink is applied manually, which increases the incidence of defective products such as misalignment of the inking position or uneven application due to individual differences, making it difficult to improve mass productivity. could not.

The purpose of the present invention is to provide a lens sanitizing device that can solve such conventional technical problems, can easily perform sanitizing with high precision just by setting a lens in the device, and can improve mass production. It is to be.

[Means for solving problems]

The present invention provides a black ink discharging section for discharging ink for a lens, a moving means for moving the ink discharging section, a lens positioning means for holding the lens in a predetermined position, and a lens rotation means for rotating the positioned lens. By configuring a lens ink pot device comprising: a drying means for drying the ink applied to the lens; and a control means for controlling the ink discharging section, the moving means, and the lens rotation means; The above purpose is achieved by automating the process.

〔Example〕

The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a perspective view schematically showing an embodiment of a lens ink pot device according to the present invention.

In FIG. 1, the lens ink pot device is a lens ink pot (
a moving means 2 that supports the ink discharging section 1 and moves it in the front-back direction (X direction), the up-down direction (Z direction) and the up-down rotation direction (θ direction), and a lens. A lens positioning means 3 that fixes and holds the lens W in a predetermined position, a lens rotation means 4 that rotates the positioned lens W in the direction of arrow R (in a horizontal plane), and a drying means that dries the ink applied to the lens W. 5, and a control means 6 for controlling the ink discharging section 1, the moving means 2, and the lens rotating means 4.

The black ejection unit 1 has its ejection amount, ejection timing, etc. controlled by the control means 6 via an ejection drive circuit (driver) 7.

The lens positioning means 3 includes a rotary table 8 on which the lens W is mounted, and adjustable lens centering means 9a, 9b, and 9c for aligning the center of the lens W with the center of the rotary table 8.

The lens rotation means 4 is composed of a motor that rotates the rotary table 8, and rotates the lens W together with the lens positioning means 3.

The drying means 5 can be composed of, for example, a dryer that blows warm air onto the daytime coating surface of the lens W.

According to the lens inking device described above, the lens W can be automatically inked by the following operating procedure.

First, the lens W is manually set on the lens rotation table 8, and then the lens rotation means (motor) 4 is driven to rotate the lens W while the lens centering means 9a, 9
The center of the rotary table 8 and the center of the lens W are aligned using b and 9c.

After positioning the lens W in this way, the moving means 2 is operated to move the ink discharge section 1 to the position where the lens W starts to be painted.

The control means 6 stores a program that calculates the relationship between the rotational speed (circumferential speed) of the lens W, the feeding speed in each direction of the ink discharge part l, and the lens ink coating, and performs desired ink application. By inputting the mode, the lens rotation speed and the feed speed of the black discharge section 1 are determined, and based on these, the lens W is automatically blackened.

As soon as the ink discharge part 1 reaches the coating end position of the lens W, the ink discharge is stopped, and while the lens W continues to rotate, the drying means 5 is operated to dry the lens resin coated on the lens W.

When the lens ink has finished drying, the rotation of the lens W is stopped, and the lens IW that has been inked is removed.

According to the lens ink pot device described above, since the movement of the moving means 2 equipped with the ink ejecting section l in the front-rear direction, up-down direction, and up-down front photographing direction is automatically controlled by the control means 6, the ink ejecting section l is automatically controlled by the control means 6. It became possible to position and feed the lens W with high accuracy, and it was possible to eliminate the occurrence of positional deviation of the blackening and the occurrence of uneven coating on the surface of the lens W.

In this way, a lens inking device was obtained that can eliminate the non-uniformity of inking due to individual differences in the prior art and can improve mass productivity.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, there is provided a black ink discharging section that discharges ink for a lens, a moving means for moving the ink discharging section, a lens positioning means for holding the lens in a predetermined position, and a positioning means for holding the lens in a predetermined position. A lens device comprising: a lens rotation means for rotating the lens, a drying means for drying ink applied to the lens, and a control means for controlling the ink discharge section, the movement means, and the lens rotation means. Since it consists of a length device, it is possible to automatically blackmail lenses with high precision, eliminating misalignment of blackmailing positions and uneven coating, thereby improving mass production of lenses. can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing an embodiment of a lens heightening device according to the present invention. ■−・−・−−−−One stroke discharge part, 2−−−−−−−−−
1. Moving means, 3. Lens positioning means, 4.
Lens rotation means, 5-----1 drying means, 6------
----- Control means, w------・Lens.

Claims (1)

[Claims] (1) An ink discharge unit that discharges ink for a lens, a moving unit that moves the ink discharge unit, a lens positioning unit that holds the lens in a predetermined position, and a lens rotation unit that rotates the positioned lens; A lens sanitizing device comprising: a drying means for drying ink applied to a lens; and a control means for controlling the ink discharge section, the moving means, and the lens rotating means.