JP2004184671A - Exterior casing for optical equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive camera excellent in design by applying two-color molding technique. <P>SOLUTION: The optical equipment equipped with exterior cabinets 21 and 22 made transparent or translucent or set in a color easily transmitting light as an exterior casing of the optical equipment is equipped with the cabinet obtained by disposing and integrally molding resin having high light shielding property at a part (shadowed part 41) where light leakage should be prevented such as the periphery of a dimmer sensor window 5. Thus, following failure in the conventional manner is eliminated; the back light of an LCD 13 is transmitted through the resin and visible, electronic flash light is transmitted through the resin to easily cause the malfunction of the dimmer sensor, and also a black sheet is stuck to a spot where the light is leaked from the inside of the cabinet so as to prevent the light from being leaked, but they lead to cost rise because of the increase of the number of parts and the necessity of sheet sticking man-hour. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an exterior of an optical apparatus, and more particularly, to an exterior apparatus such as a camera or the like, which is provided with a color exterior cabinet that is transparent, translucent, or easy to transmit light.
[0002]
[Prior art]
In optical equipment such as cameras, there are products with a hobby coloring by applying various colors, patterns, characters, etc. to the exterior using a resin that easily transmits light as a product with improved exterior design. . In such a product, it is necessary to prevent light leakage inside the device from a portion that easily transmits light, or it is necessary to prevent malfunction of the dimming sensor. . For this reason, conventionally, it has been common to take measures against such a necessary part by sticking a black sheet inside the cabinet to shield it from light.
[0003]
Various techniques are known as light shielding means. For example, in an optical component in which an observation optical system at the distal end of an endoscope insertion portion provided with an observation optical system together with a light guide and an illumination lens is integrally formed with a distal end lens and a support portion that supports the distal end lens, There is an optical component formed of an optically transparent methacrylic resin and a support portion formed of an optically opaque black methacrylic resin. These members are integrally formed by injection molding by two-color molding, and have a structure in which the abutting portions of the resins are welded and joined in a molding die. (For example, refer to Patent Document 1).
[0004]
In addition, as a technique for improving the visibility of the operation member while ensuring reliable light shielding, the base is molded from a transparent silicone rubber composition, a translucent colored layer is formed on the top surface of the key top portion, and the entire surface of the base is A light-shielding colored layer is formed with carbon black paint, a decorative colored layer is formed on the entire surface of the light-shielding colored layer, and the decorative colored layer and the light-shielding colored layer are removed by a laser to form a display portion. However, there is a technique in which a base portion is a light emitting diode and a movable contact is opposed to a fixed contact (see, for example, Patent Document 2).
[0005]
In addition, the central part including the drive shaft of the winding knob is formed from two-color molding of black resin and the operation part of the outer peripheral part is formed of red colored resin, the winding knob is incorporated into the main body base, and the front cover and the rear cover are assembled. The operation part is partially exposed from the rear cover, the operation part made of red resin improves the visibility, and the central part is made of black resin, so the light that has passed through the operation part is shielded from the cartridge There is a technique for keeping the inside of a chamber light-tight (see, for example, Patent Document 3).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-105881 (page 2-10, FIG. 2)
[Patent Document 2]
JP-A-10-31726 (page 2-8, FIG. 1)
[Patent Document 3]
JP 2001-290203 A (page 2-4, FIG. 4)
[0007]
[Problems to be solved by the invention]
The present invention uses a resin that easily transmits light as a product with improved exterior design, and has various colors, patterns, characters, etc. applied to the exterior, and coloring as a hobby coloring. And technology related to transparent products. The above prior art relates to a two-color molding technique, but is completely different from the present invention.
[0008]
In the case of a digital camera, a liquid crystal (LCD) is mounted for shooting confirmation. However, a resin with a bright color generally has a poor concealment property, and the backlight of the LCD appears to pass through the resin. In addition, there is a problem that the strobe light easily passes through the resin and the malfunction of the light control sensor is likely to occur. Furthermore, in the case of a silver salt camera, there is a risk that the film is exposed to a resin with poor light concealment.
[0009]
Conventionally, as a countermeasure, a black sheet is attached from the inside of the cabinet to a place where there is a fear of light leakage to prevent light leakage. Such measures have led to increased costs due to an increase in parts (sheets) and man-hours for sheet pasting. In addition, the light shielding by the exterior coating material of the cabinet is insufficient in the light shielding property, and a desired effect cannot be obtained.
[0010]
An object of the present invention is to solve the above-described problems and to provide a low-cost and highly designable camera by applying a two-color molding technique.
[0011]
[Means for Solving the Problems]
The present invention includes an optical device having a transparent or translucent or color exterior cabinet that easily transmits light, and a cabinet that is integrally formed by disposing a resin having a high light shielding function in a portion that should prevent light leakage. An exterior of an optical device characterized by the above is provided.
[0012]
Conventionally, when using a resin-colored cabinet that easily transmits light in an optical device such as a camera, a black sheet is attached to the inside of the cabinet to prevent light leakage inside and the light control sensor from malfunctioning. .
[0013]
In the present invention, a light-shielding resin is integrally molded in a cabinet instead of a sheet, so that light leakage can be prevented, the number of sheet parts to be deleted and the number of sheet pasting steps can be reduced, and the cost can be reduced.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, instead of the sheet, a highly light-shielding resin is molded into the cabinet at the same time, thereby reducing the number of parts and assembling steps and enabling cost reduction.
[0015]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view seen from the front side of the camera 1 of the embodiment, and FIG. 2 is a perspective view seen from the back side.
[0016]
The camera 1 includes a lens 2, a finder window 3, a tally window 4, a light control sensor window 5, a strobe window 6, a grip 7, a release button 8 and the like on the front side, and a mode dial 11, a finder 12, an LCD 13, A jack portion 14 and the like are provided. The front and back cabinets 21 and 22 of the camera 1 according to the embodiment are made of two layers of resin having good color development obtained by vividly coloring a transparent resin.
[0017]
As these chromatic colors, for example, silver-based gray color has relatively high light-shielding property, but yellow-based, orange-based, pink-based and the like have low light-shielding property. The color developability of paints with low light-shielding properties such as yellow, orange, and pink varies greatly depending on the base resin. Therefore, when emphasis is placed on color developability and design, light-shielding properties are ignored and tend to be easier.
[0018]
On the other hand, the light control sensor for strobe has a delicate characteristic, and if there is light leakage of strobe light, it becomes a big obstacle. Also, if there is light leakage around the LCD, the quality of the product deteriorates and the merchantability is greatly impaired.
[0019]
In view of the above circumstances, it is a conflicting demand to improve the quality of the appearance and improve the function of the camera in a camera that places importance on the color of the appearance.
[0020]
The present invention overcomes this two-way elimination and forms a double-integrated resin-molded cabinet with a high light-shielding property provided at a portion where light leakage should be prevented and at the same time improved overall coloration. It was. The shaded portions 41 and 42 in FIGS. 1 and 2 are provided with a light-shielding property by disposing a flame-retardant grade resin having a high light-shielding property.
[0021]
The other portions were formed by overlapping resins having color variations with emphasis on chromaticity. In addition, since coloring is closely related to the thickness of the resin, the color arrangement design is performed in consideration of these. In addition, when coating the outer surface, a color arrangement design that takes this coating into account is performed.
[0022]
【The invention's effect】
According to the present invention, in a camera or the like having a transparent or translucent or color exterior cabinet that easily transmits light, the number of parts can be reduced, the number of assembling steps can be reduced, and the cost can be reduced without using a light shielding sheet. It became possible. In addition, there is an excellent effect that the selection range of design colors is widened.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment as viewed from the front side.
FIG. 2 is a perspective view of the embodiment as seen from the back side.
[Explanation of symbols]
1 Camera 2 Lens 3 Viewfinder window 4 Tally window 5 Light control sensor window 6 Strobe window 7 Grip 8 Release button 11 Mode dial 12 Viewfinder 13 LCD
14 Jack part 21, 22 Cabinet 41, 42 Shaded part

Claims (1)

An optical device having a transparent or semi-transparent or light-transmitting color exterior cabinet, characterized in that it is provided with a cabinet integrally formed by disposing a resin having a high light shielding function in a portion where light leakage should be prevented. Optical equipment exterior.

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