JPH08339038A - Exposure device - Google Patents

Abstract

PURPOSE: To obtain a film image confirming device capable of being applied to an exposure device where a lens supporting body has no space to set a mirror for confirming a film image inside by arranging an image-formation lens at a specified position. CONSTITUTION: The film image confirming device 10 is provided with a 1st mirror 11 and a 2nd mirror 12, which are attached to the lens supporting body 2. A CCD camera 13 connected to a monitor television is set above the 2nd mirror 12. The image-formation lens 14 is arranged to be inclined with respect to an optical axis 0 linking the center of the film image and the center of the image-formation surface of the camera 13 so that the film image of the film F at an exposing position P and the image-formation surface of the camera 13 may be in a tilt and shift in-focus relation with respect to the lens 14. A luminous flux for confirming the film image projected in a direction different from the optical axis X of a printing lens 3 is reflected by the mirrors 11 and 12 and formed into an image on the image pickup surface of the camera 13 by the lens 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to an exposure apparatus, and more particularly to an apparatus for confirming an image of a film set on an exposure apparatus for exposing a film image on photographic paper or the like prior to exposure. The present invention relates to a film image confirmation device.

[0002]

2. Description of the Related Art An exposure device for exposing a film image to photographic paper or the like is known. This exposure device generally includes a lens support, a print lens attached to the lens support, and It has a lamp means installed below the print lens and a film support guide device for guiding the film to be exposed between the print lens and the lamp means. The photographic paper will be installed in. For images of the film set below the print lens by the film support device, that is, positioned at the exposure position, especially, the trimming operation is performed on the film to displace the center of the film from the optical axis of the print lens. In some cases, it may be necessary to check the film image to be exposed again before actually performing the exposure. In order to meet such demands, among various exposure apparatuses, there are those which are provided with a film image confirmation apparatus for confirming a film image at the exposure position. Such a film image confirmation apparatus has a mirror for confirming a film image called a half mirror installed inside the lens support. This half mirror is typically plate-shaped, one end of which is pivotally attached to the lens support at a position where it does not interfere with the print lens, and the free end of which is on the focus path of the print lens, if necessary. The film image can be displayed by being rotated to. The film image light flux reflected by the half mirror is captured through a hole formed in the side wall of the lens support by a video camera installed adjacent to the hole, and finally connected to the video camera. It is confirmed on the monitor.

[0003]

However, since the above-mentioned half mirror is large to be housed in the lens support, there are some exposure apparatuses in which the space for installing the half mirror cannot be secured in the support. There is a problem in the exposure apparatus that it is impossible to satisfy the request for confirming the film image at the exposure position.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a film image confirmation apparatus which can be applied to an exposure apparatus in which a lens support does not have a space for installing a film image confirmation mirror therein. To do.

[0005]

To achieve the above object, the present invention provides a lens support, a print lens attached to the lens support, and a film exposure lamp device disposed below the print lens. An exposure apparatus having a film support member for supporting the film, which is disposed between the print lens and the lamp device, and an image confirmation apparatus for confirming the film image of the film positioned at the exposure position. The image confirmation device includes a first mirror arranged below the lens support and close to the print lens, and a second mirror arranged on the reflection optical axis of the first mirror.
It has a mirror and an imaging lens and an imaging member arranged on the reflection optical axis of the second mirror, and the imaging lens has a film at the exposure position and an imaging surface of the imaging member so that they have a focusing relationship. And an exposure apparatus. In the present invention, it is preferable that the film, the first mirror, the second mirror, and the imaging surface are parallel to each other. Further, it is preferable to dispose a light shielding plate between the second mirror and the imaging lens.

[0006]

The luminous flux for confirming the film image emitted in the direction different from the optical axis X of the print lens is reflected by the first mirror and the second mirror and is formed on the image pickup surface of the image pickup member by the image pickup lens. Image. The film and the image pickup surface of the image pickup member have a tilted focusing relationship, and the entire surface of the film is focused on the image pickup surface of the image pickup member with high accuracy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In this embodiment, the present invention is applied to an exposure device for exposing a film. FIG.
As shown in FIG. 1, the exposure apparatus generally designated by 1 includes a lens support 2 attached to a support member (not shown), a print lens 3 detachably attached to the lens support 2, and a print. The film exposure lamp device 4 arranged below the lens 3, the print lens 3 and the lamp device 4
And a film support member 5 for supporting the film F, which is disposed between The film support member 5 is partially transparent at the top so that light from the lamp device 4 can be applied to the film F. When the film F is actually exposed, a photosensitive material such as photographic paper (not shown) is arranged above the lens support 2.
The exposure apparatus 1 further includes a film support member 5 positioned at a position where the center of the image to be exposed on the film F is aligned with the vertical center axis of the print lens 3, that is, the optical axis X, that is, the exposure position P. A film image checking device 10 is provided for checking the film image of the upper film F prior to the actual exposure. Here, "Film F
The center of the image to be exposed is a concept including the center of the film F and the center of a desired image portion of the image of the film F. The center of the desired image portion of the image of the film F becomes the "center of the image to be exposed of the film F" because the center of the film F is changed by the trimming operation on the film F on the film supporting member 5.
This is the case when the print lens 3 is moved in the horizontal direction (X-axis direction) or the vertical direction (Y-axis direction) with respect to the optical axis X.

The film image confirmation apparatus 10 has a first mirror 11 for reflecting the light flux from the film image of the film F at the exposure position P, and the first mirror 11 is
The lens support 2 is provided below the lower surface of the lens support 2 and close to the print lens 3 by an appropriate mounting tool (not shown).
Mounted on. The first mirror 11 is positioned close to the print lens 3 as long as the capture of the film image of the film F in the exposure position P is not interfered by the print lens 3, which gives the maximum amount of light with respect to the film image to be captured. This is because. On the other hand, it does not make sense to dispose the first mirror 11 outside the outer surface of the lens support 2, because if the mirror is arranged at such a position, the mirror at that position and the exposure position P This is because it suffices to install the video camera directly on the extension line connecting the film image of the film F in FIG. still,
In this embodiment, the first mirror 11 is a flat plate-shaped mirror and is installed substantially parallel to the film F at the exposure position P. The film image checking device 10 is also the first
It has a second mirror 12 arranged to face the first mirror 11 for receiving the reflected light flux from the mirror 11.
This second mirror 12 is also a flat plate mirror,
It is placed substantially parallel to the first mirror 11 and attached to the lens support 2 by means of a suitable attachment (not shown).

A CCD camera 13 having a longitudinal axis A parallel to the optical axis X of the print lens 3 and connected to a monitor TV (not shown) is installed above the second mirror 12 and the second mirror 12 is provided. An image forming lens 14 is provided for forming an image of the reflected image light flux from the image forming surface of the CCD camera 13. The imaging lens 14 connects the center of the film image and the center of the imaging surface of the CCD camera 13 so that the film image and the imaging surface of the CCD camera 13 are tilted and focused with respect to the imaging lens 14. It is arranged to be inclined with respect to the optical axis O. Further, a light blocking plate 15 for blocking stray light to the second mirror 12 is installed between the second mirror 12 and the imaging lens 14. An opening 16 is provided in the light shielding plate 15, and the reflected image light flux from the second mirror 12 passes through the opening 16. Next, the operation of the above embodiment will be described. The light flux for confirming the film image, which is emitted in a direction different from the optical axis X of the print lens 3, is reflected by the first mirror 11 and the second mirror 12, and is formed on the imaging surface of the CCD camera 13 by the imaging lens 14. Image. The film F and the image pickup surface of the CCD camera 13 have a tilted focusing relationship, and the entire surface of the film F is focused on the image pickup surface of the CCD camera 13 with high precision, and a film image display on a monitor TV (not shown) The film image can be confirmed by.

The present invention is not limited to the above-described embodiment, but various modifications such as the following are possible. For example, the first
The arrangement location and the arrangement angle of the mirror 11 and the second mirror 12 can be appropriately changed. Further, in the above embodiment, the film support member 5 supports one frame of film F, but the exposure apparatus of the present invention is of a type in which the film support member supports and guides a continuous roll-shaped film. May be This type of film support member grips each end of the roll-shaped film and displaces the film from one to the other, and a pair of drive rollers extending between the pair of drive rollers for supporting and guiding the film. A film support guide portion is provided, and the film at the exposure position is displaced in the X-axis direction by using a drive roller, and the displacement in the Y-axis direction is performed by displacing the entire film support member in the same direction. It has become. Further, the film support member sequentially feeds the film mount holding the film from the carry-out magazine arranged upstream of the print lens 3, positions the film of the film mount at the exposure position P, and after the exposure, print lens 3 It may be of a type in which it is stored in a storage magazine arranged downstream thereof.

When the print lens 3 or the film supporting member 5 is moved along the optical axis X, the film image checking device 10 can be appropriately moved in association with the movement.

[Brief description of drawings]

FIG. 1 is a schematic front view of an exposure apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Exposure Device 2 Lens Support 3 Print Lens 4 Lamp Device 5 Film Support Member 10 Film Image Confirmation Device 11 First Mirror 12 Second Mirror 13 CCD Camera 14 Imaging Lens 15 Light-Shielding Plate 16 Opening

Claims (3)

[Claims] 1. A lens support, a print lens attached to the lens support, a film exposure lamp device disposed below the print lens, and a film exposure lamp device disposed between the print lens and the lamp device. Also, in an exposure device having a film support member for supporting the film, and an image confirmation device for confirming the film image of the film positioned at the exposure position, wherein the image confirmation device is the lens support A first mirror disposed below in proximity to the print lens, a second mirror disposed on the reflection optical axis of the first mirror, and an image formed on the reflection optical axis of the second mirror A lens and an image pickup member, and the image forming lens is arranged such that the film at the exposure position and the image pickup surface of the image pickup member have a focusing relationship. Wherein the exposure apparatus. 2. The exposure apparatus according to claim 1, wherein the film at the exposure position, the first mirror, the second mirror, and the imaging surface are parallel to each other. 3. A light-shielding plate is arranged between the second mirror and the imaging lens.
The exposure apparatus described.