SLR camera with auxiliary light emitter

Details SLR camera with auxiliary light emitter SLR camera with auxiliary light emitter

1990-07-09

1991-11-12

Mathews, A. A.

3541491, 35414911, G03B 300, G03B 1505

Patent

active

050651773

ABSTRACT:
A pop-up flash unit 20 for an SLR camera includes an integral auxiliary light emitting device 26 for projecting a predetermined pattern along the camera lens axis to provide sufficient auto-focusing contrast. A triangular prism 60 forms a window in a front wall 16a of the flash unit chamber 16 confronting the condenser lens 25 of the auxiliary light emitting device such that the predetermined pattern projected by the downwardly angled emitting device, when the flash unit is retracted, is bent upwardly to still fall along the camera lens axis.

REFERENCES:
patent: 4690538 (1987-09-01), Matsui et al.
patent: 4771308 (1988-09-01), Tejima et al.
patent: 4870442 (1989-09-01), Tejima et al.
patent: 4893140 (1990-01-01), Yamamoto et al.
patent: 4910542 (1990-03-01), Yamamoto et al.
patent: 4920368 (1990-04-01), Arai et al.

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